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VonKaenel E, Feidler A, Lowery R, Andersh K, Love T, Majewska A, McCall MN. A model-based hierarchical Bayesian approach to Sholl analysis. Bioinformatics 2024; 40:btae156. [PMID: 38514403 PMCID: PMC10985672 DOI: 10.1093/bioinformatics/btae156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 02/13/2024] [Accepted: 03/19/2024] [Indexed: 03/23/2024] Open
Abstract
MOTIVATION Due to the link between microglial morphology and function, morphological changes in microglia are frequently used to identify pathological immune responses in the central nervous system. In the absence of pathology, microglia are responsible for maintaining homeostasis, and their morphology can be indicative of how the healthy brain behaves in the presence of external stimuli and genetic differences. Despite recent interest in high throughput methods for morphological analysis, Sholl analysis is still widely used for quantifying microglia morphology via imaging data. Often, the raw data are naturally hierarchical, minimally including many cells per image and many images per animal. However, existing methods for performing downstream inference on Sholl data rely on truncating this hierarchy so rudimentary statistical testing procedures can be used. RESULTS To fill this longstanding gap, we introduce a parametric hierarchical Bayesian model-based approach for analyzing Sholl data, so that inference can be performed without aggressive reduction of otherwise very rich data. We apply our model to real data and perform simulation studies comparing the proposed method with a popular alternative. AVAILABILITY AND IMPLEMENTATION Software to reproduce the results presented in this article is available at: https://github.com/vonkaenelerik/hierarchical_sholl. An R package implementing the proposed models is available at: https://github.com/vonkaenelerik/ShollBayes.
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Affiliation(s)
- Erik VonKaenel
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY 14642, United States
| | - Alexis Feidler
- Department of Neuroscience, University of Rochester, Rochester, NY 14642, United States
| | - Rebecca Lowery
- Department of Neuroscience, University of Rochester, Rochester, NY 14642, United States
| | - Katherine Andersh
- Department of Neuroscience, University of Rochester, Rochester, NY 14642, United States
| | - Tanzy Love
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY 14642, United States
| | - Ania Majewska
- Department of Neuroscience, University of Rochester, Rochester, NY 14642, United States
| | - Matthew N McCall
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY 14642, United States
- Department of Biomedical Genetics, University of Rochester, Rochester, NY 14642, United States
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2
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Chakraborty D, Boni R, Mills BN, Cheng J, Komissarov I, Gerber SA, Sobolewski R. High-Density Polyethylene Custom Focusing Lenses for High-Resolution Transient Terahertz Biomedical Imaging Sensors. Sensors (Basel) 2024; 24:2066. [PMID: 38610278 PMCID: PMC11014130 DOI: 10.3390/s24072066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/28/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024]
Abstract
Transient terahertz time-domain spectroscopy (THz-TDS) imaging has emerged as a novel non-ionizing and noninvasive biomedical imaging modality, designed for the detection and characterization of a variety of tissue malignancies due to their high signal-to-noise ratio and submillimeter resolution. We report our design of a pair of aspheric focusing lenses using a commercially available lens-design software that resulted in about 200 × 200-μm2 focal spot size corresponding to the 1-THz frequency. The lenses are made of high-density polyethylene (HDPE) obtained using a lathe fabrication and are integrated into a THz-TDS system that includes low-temperature GaAs photoconductive antennae as both a THz emitter and detector. The system is used to generate high-resolution, two-dimensional (2D) images of formalin-fixed, paraffin-embedded murine pancreas tissue blocks. The performance of these focusing lenses is compared to the older system based on a pair of short-focal-length, hemispherical polytetrafluoroethylene (TeflonTM) lenses and is characterized using THz-domain measurements, resulting in 2D maps of the tissue refractive index and absorption coefficient as imaging markers. For a quantitative evaluation of the lens effect on the image resolution, we formulated a lateral resolution parameter, R2080, defined as the distance required for a 20-80% transition of the imaging marker from the bare paraffin region to the tissue region in the same image frame. The R2080 parameter clearly demonstrates the advantage of the HDPE lenses over TeflonTM lenses. The lens-design approach presented here can be successfully implemented in other THz-TDS setups with known THz emitter and detector specifications.
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Affiliation(s)
- Debamitra Chakraborty
- Materials Science Program, University of Rochester, Rochester, NY 14627-0166, USA; (D.C.); (J.C.)
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, USA; (R.B.); (I.K.)
| | - Robert Boni
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, USA; (R.B.); (I.K.)
| | - Bradley N. Mills
- Department of Surgery, University of Rochester Medical Center, Rochester, NY 14642-0001, USA; (B.N.M.); (S.A.G.)
| | - Jing Cheng
- Materials Science Program, University of Rochester, Rochester, NY 14627-0166, USA; (D.C.); (J.C.)
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, USA; (R.B.); (I.K.)
| | - Ivan Komissarov
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, USA; (R.B.); (I.K.)
- Department of Electrical and Computer Engineering, University of Rochester, Rochester, NY 14627-0231, USA
| | - Scott A. Gerber
- Department of Surgery, University of Rochester Medical Center, Rochester, NY 14642-0001, USA; (B.N.M.); (S.A.G.)
| | - Roman Sobolewski
- Materials Science Program, University of Rochester, Rochester, NY 14627-0166, USA; (D.C.); (J.C.)
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, USA; (R.B.); (I.K.)
- Department of Electrical and Computer Engineering, University of Rochester, Rochester, NY 14627-0231, USA
- Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627-0171, USA
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3
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Harrington B, Ye Z, Signor L, Pickel AD. Luminescence Thermometry Beyond the Biological Realm. ACS Nanosci Au 2024; 4:30-61. [PMID: 38406316 PMCID: PMC10885336 DOI: 10.1021/acsnanoscienceau.3c00051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/09/2023] [Accepted: 11/13/2023] [Indexed: 02/27/2024]
Abstract
As the field of luminescence thermometry has matured, practical applications of luminescence thermometry techniques have grown in both frequency and scope. Due to the biocompatibility of most luminescent thermometers, many of these applications fall within the realm of biology. However, luminescence thermometry is increasingly employed beyond the biological realm, with expanding applications in areas such as thermal characterization of microelectronics, catalysis, and plasmonics. Here, we review the motivations, methodologies, and advances linked to nonbiological applications of luminescence thermometry. We begin with a brief overview of luminescence thermometry probes and techniques, focusing on those most commonly used for nonbiological applications. We then address measurement capabilities that are particularly relevant for these applications and provide a detailed survey of results across various application categories. Throughout the review, we highlight measurement challenges and requirements that are distinct from those of biological applications. Finally, we discuss emerging areas and future directions that present opportunities for continued research.
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Affiliation(s)
- Benjamin Harrington
- Materials
Science Program, University of Rochester, Rochester, New York 14627, United States
| | - Ziyang Ye
- Materials
Science Program, University of Rochester, Rochester, New York 14627, United States
| | - Laura Signor
- The
Institute of Optics, University of Rochester, Rochester, New York 14627, United States
| | - Andrea D. Pickel
- Department
of Mechanical Engineering and Materials Science Program, University of Rochester, Rochester, New York 14627, United States
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4
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Cooney S, Walls MRA, Schreiber E, Brennessel WW, Matson EM. Heterometal Dopant Changes the Mechanism of Proton-Coupled Electron Transfer at the Polyoxovanadate-Alkoxide Surface. J Am Chem Soc 2024; 146:2364-2369. [PMID: 38241170 PMCID: PMC10835708 DOI: 10.1021/jacs.3c14054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/21/2024]
Abstract
The transfer of two H-atom equivalents to the titanium-doped polyoxovanadate-alkoxide, [TiV5O6(OCH3)13], results in the formation of a V(III)-OH2 site at the surface of the assembly. Incorporation of the group (IV) metal ion results in a weakening of the O-H bonds of [TiV5O5(OH2)(OCH3)13] in comparison to its homometallic congener, [V6O6(OH2)(OCH3)12], resembling more closely the thermodynamics reported for the one-electron reduced derivative, [V6O6(OH2)(OCH3)12]1-. An analysis of early time points of the reaction of [TiV5O6(OCH3)13] and 5,10-dihydrophenazine reveals the formation of an oxidized substrate, suggesting that proton-coupled electron transfer proceeds via initial electron transfer from substrate to cluster prior to proton transfer. These results demonstrate the profound influence of heterometal dopants on the mechanism of PCET with respect to the surface of the assembly.
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Affiliation(s)
- Shannon
E. Cooney
- Department of Chemistry, University
of Rochester, Rochester, New York 14627, United States
| | - M. Rebecca A. Walls
- Department of Chemistry, University
of Rochester, Rochester, New York 14627, United States
| | - Eric Schreiber
- Department of Chemistry, University
of Rochester, Rochester, New York 14627, United States
| | - William W. Brennessel
- Department of Chemistry, University
of Rochester, Rochester, New York 14627, United States
| | - Ellen M. Matson
- Department of Chemistry, University
of Rochester, Rochester, New York 14627, United States
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5
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Ghosh R, Li X, Yates MZ. Nonenzymatic Glucose Sensor Using Bimetallic Catalysts. ACS Appl Mater Interfaces 2024; 16:17-29. [PMID: 38118131 PMCID: PMC10788829 DOI: 10.1021/acsami.3c10167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 11/25/2023] [Accepted: 11/28/2023] [Indexed: 12/22/2023]
Abstract
Bimetallic glucose oxidation electrocatalysts were synthesized by two electrochemical reduction reactions carried out in series onto a titanium electrode. Nickel was deposited in the first synthesis stage followed by either silver or copper in the second stage to form Ag@Ni and Cu@Ni bimetallic structures. The chemical composition, crystal structure, and morphology of the resulting metal coating of the titanium electrode were investigated by X-ray diffraction, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and electron microscopy. The electrocatalytic performance of the coated titanium electrodes toward glucose oxidation was probed using cyclic voltammetry and amperometry. It was found that the unique high surface area bimetallic structures have superior electrocatalytic activity compared to nickel alone. The resulting catalyst-coated titanium electrode served as a nonenzymatic glucose sensor with high sensitivity and low limit of detection for glucose. The Cu@Ni catalyst enables accurate measurement of glucose over the concentration range of 0.2-12 mM, which includes the full normal human blood glucose range, with the maximum level extending high enough to encompass warning levels for prediabetic and diabetic conditions. The sensors were also found to perform well in the presence of several chemical compounds found in human blood known to interfere with nonenzymatic sensors.
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Affiliation(s)
- Rashmi Ghosh
- Department of Chemical Engineering, University of Rochester, Rochester, New York 14627, United States
| | - Xiao Li
- Department of Chemical Engineering, University of Rochester, Rochester, New York 14627, United States
| | - Matthew Z. Yates
- Department of Chemical Engineering, University of Rochester, Rochester, New York 14627, United States
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6
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Hu D, Ying W, Huo P. Resonance Enhancement of Vibrational Polariton Chemistry Obtained from the Mixed Quantum-Classical Dynamics Simulations. J Phys Chem Lett 2023; 14:11208-11216. [PMID: 38055902 PMCID: PMC10726371 DOI: 10.1021/acs.jpclett.3c02985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/21/2023] [Accepted: 12/01/2023] [Indexed: 12/08/2023]
Abstract
We applied a variety of mixed quantum-classical (MQC) approaches to simulate the VSC-influenced reaction rate constant. All of these MQC simulations treat the key vibrational levels associated with the reaction coordinate in the quantum subsystem (as quantum states), whereas all other degrees of freedom (DOFs) are treated inside the classical subsystem. We find that, as long as we have the quantum state descriptions for the vibrational DOFs, one can correctly describe the VSC resonance condition when the cavity frequency matches the bond vibrational frequency. This correct resonance behavior can be obtained regardless of the detailed MQC methods that one uses. The results suggest that the MQC approaches can generate semiquantitative agreement with the exact results for rate constant changes when changing the cavity frequency, the light-matter coupling strength, or the cavity lifetime. The finding of this work suggests that one can use computationally economic MQC approaches to explore the collective coupling scenario when many molecules are collectively coupled to many cavity modes in the future.
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Affiliation(s)
- Deping Hu
- Center
for Advanced Materials Research, Beijing
Normal University, Zhuhai 519087, China
| | - Wenxiang Ying
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Pengfei Huo
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
- Institute
of Optics, Hajim School of Engineering, University of Rochester, Rochester, New York 14627, United States
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7
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Miller KG, Pierce JR, Ambat MV, Shaw JL, Weichman K, Mori WB, Froula DH, Palastro JP. Dephasingless laser wakefield acceleration in the bubble regime. Sci Rep 2023; 13:21306. [PMID: 38042954 PMCID: PMC10693645 DOI: 10.1038/s41598-023-48249-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 11/23/2023] [Indexed: 12/04/2023] Open
Abstract
Laser wakefield accelerators (LWFAs) have electric fields that are orders of magnitude larger than those of conventional accelerators, promising an attractive, small-scale alternative for next-generation light sources and lepton colliders. The maximum energy gain in a single-stage LWFA is limited by dephasing, which occurs when the trapped particles outrun the accelerating phase of the wakefield. Here, we demonstrate that a single space-time structured laser pulse can be used for ionization injection and electron acceleration over many dephasing lengths in the bubble regime. Simulations of a dephasingless laser wakefield accelerator driven by a 6.2-J laser pulse show 25 pC of injected charge accelerated over 20 dephasing lengths (1.3 cm) to a maximum energy of 2.1 GeV. The space-time structured laser pulse features an ultrashort, programmable-trajectory focus. Accelerating the focus, reducing the focused spot-size variation, and mitigating unwanted self-focusing stabilize the electron acceleration, which improves beam quality and leads to projected energy gains of 125 GeV in a single, sub-meter stage driven by a 500-J pulse.
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Affiliation(s)
- Kyle G Miller
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, 14623-1299, USA.
| | - Jacob R Pierce
- Department of Physics and Astronomy, University of California, Los Angeles, CA, 90095, USA
| | - Manfred V Ambat
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, 14623-1299, USA
| | - Jessica L Shaw
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, 14623-1299, USA
| | - Kale Weichman
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, 14623-1299, USA
| | - Warren B Mori
- Department of Physics and Astronomy, University of California, Los Angeles, CA, 90095, USA
- Department of Electrical and Computer Engineering, University of California, Los Angeles, CA, 90095, USA
| | - Dustin H Froula
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, 14623-1299, USA
| | - John P Palastro
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY, 14623-1299, USA
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8
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Khan IR, Dar IA, Johnson TW, Loose E, Xu YY, Santiago E, Donohue KL, Marinescu MA, Gosev I, Schifitto G, Maddox RK, Busch DR, Choe R, Selioutski O. Correlations Between Quantitative EEG Parameters and Cortical Blood Flow in Patients Undergoing Extracorporeal Membrane Oxygenation With and Without Encephalopathy. J Clin Neurophysiol 2023:00004691-990000000-00108. [PMID: 37934074 DOI: 10.1097/wnp.0000000000001035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023] Open
Abstract
PURPOSE The neurologic examination of patients undergoing extracorporeal membrane oxygenation (ECMO) is crucial for evaluating irreversible encephalopathy but is often obscured by sedation or neuromuscular blockade. Noninvasive neuromonitoring modalities including diffuse correlation spectroscopy and EEG measure cerebral perfusion and neuronal function, respectively. We hypothesized that encephalopathic ECMO patients with greater degree of irreversible cerebral injury demonstrate less correlation between electrographic activity and cerebral perfusion than those whose encephalopathy is attributable to medications. METHODS We performed a prospective observational study of adults undergoing ECMO who underwent simultaneous continuous EEG and diffuse correlation spectroscopy monitoring. (Alpha + beta)/delta ratio and alpha/delta Rartio derived from quantitative EEG analysis were correlated with frontal cortical blood flow index. Patients who awakened and followed commands during sedation pauses were included in group 1, whereas patients who could not follow commands for most neuromonitoring were placed in group 2. (Alpha + beta)/delta ratio-blood flow index and ADR-BFI correlations were compared between the groups. RESULTS Ten patients (five in each group) underwent 39 concomitant continuous EEG and diffuse correlation spectroscopy monitoring sessions. Four patients (80%) in each group received some form of analgosedation during neuromonitoring. (Alpha + beta)/delta ratio-blood flow index correlation was significantly lower in group 2 than group 1 (left: 0.05 vs. 0.52, P = 0.03; right: -0.12 vs. 0.39, P = 0.04). Group 2 ADR-BFI correlation was lower only over the right hemisphere (-0.06 vs. 0.47, P = 0.04). CONCLUSIONS Correlation between (alpha + beta)/delta ratio and blood flow index were decreased in encephalopathic ECMO patients compared with awake ones, regardless of the analgosedation use. The combined use of EEG and diffuse correlation spectroscopy may have utility in monitoring cerebral function in ECMO patients.
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Affiliation(s)
| | - Irfaan A Dar
- Biomedical Engineering, University of Rochester Medical Center, Rochester, New York, U.S.A
| | | | - Emily Loose
- School of Arts and Sciences, University of Rochester, Rochester, New York, U.S.A
| | - Yama Y Xu
- School of Arts and Sciences, University of Rochester, Rochester, New York, U.S.A
| | - Esmeralda Santiago
- School of Arts and Sciences, University of Rochester, Rochester, New York, U.S.A
| | - Kelly L Donohue
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, U.S.A
| | - Mark A Marinescu
- Department of Medicine, University of Rochester Medical Center, Rochester, New York, U.S.A
| | - Igor Gosev
- Division of Cardiac Surgery, Department of Surgery, University of Rochester Medical Center, Rochester, New York, U.S.A
| | | | - Ross K Maddox
- Biomedical Engineering, University of Rochester Medical Center, Rochester, New York, U.S.A
- Department of Neuroscience, University of Rochester Medical Center, Rochester, New York, U.S.A
| | - David R Busch
- Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Dallas, Texas, U.S.A
| | - Regine Choe
- Biomedical Engineering, University of Rochester Medical Center, Rochester, New York, U.S.A
- Department of Electrical and Computer Engineering, University of Rochester, Rochester, New York, U.S.A.; and
| | - Olga Selioutski
- Departments of Neurology and
- Department of Neurology, University of Mississippi, Jackson, Mississippi, U.S.A
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9
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Rudy MJ, Salois G, Cubello J, Newell R, Mayer-Proschel M. Gestational iron deficiency affects the ratio between interneuron subtypes in the postnatal cerebral cortex in mice. Development 2023; 150:dev201068. [PMID: 36805633 PMCID: PMC10110419 DOI: 10.1242/dev.201068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 01/30/2023] [Indexed: 02/22/2023]
Abstract
Gestational iron deficiency (gID) is highly prevalent and associated with an increased risk of intellectual and developmental disabilities in affected individuals that are often defined by a disrupted balance of excitation and inhibition (E/I) in the brain. Using a nutritional mouse model of gID, we previously demonstrated a shift in the E/I balance towards increased inhibition in the brains of gID offspring that was refractory to postnatal iron supplementation. We thus tested whether gID affects embryonic progenitor cells that are fated towards inhibitory interneurons. We quantified relevant cell populations during embryonic inhibitory neuron specification and found an increase in the proliferation of Nkx2.1+ interneuron progenitors in the embryonic medial ganglionic eminence at E14 that was associated with increased Shh signaling in gID animals at E12. When we quantified the number of mature inhibitory interneurons that are known to originate from the MGE, we found a persistent disruption of differentiated interneuron subtypes in early adulthood. Our data identify a cellular target that links gID with a disruption of cortical interneurons which play a major role in the establishment of the E/I balance.
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Affiliation(s)
- Michael J. Rudy
- Department of Biomedical Genetics, University of Rochester, 601 Elmwood Avenue, Rochester, NY 14642, USA
- Department of Neurology, University of Colorado Denver – Anschutz Medical Campus, 13001 East 17th Place, Aurora, CO 80045, USA
| | - Garrick Salois
- Department of Biomedical Genetics, University of Rochester, 601 Elmwood Avenue, Rochester, NY 14642, USA
| | - Janine Cubello
- Department of Biomedical Genetics, University of Rochester, 601 Elmwood Avenue, Rochester, NY 14642, USA
| | - Robert Newell
- Department of Biomedical Genetics, University of Rochester, 601 Elmwood Avenue, Rochester, NY 14642, USA
| | - Margot Mayer-Proschel
- Department of Biomedical Genetics, University of Rochester, 601 Elmwood Avenue, Rochester, NY 14642, USA
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10
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Giedt MS, Thomalla JM, White RP, Johnson MR, Lai ZW, Tootle TL, Welte MA. Adipose triglyceride lipase promotes prostaglandin-dependent actin remodeling by regulating substrate release from lipid droplets. Development 2023; 150:dev201516. [PMID: 37306387 PMCID: PMC10281261 DOI: 10.1242/dev.201516] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 05/03/2023] [Indexed: 05/13/2023]
Abstract
Lipid droplets (LDs), crucial regulators of lipid metabolism, accumulate during oocyte development. However, their roles in fertility remain largely unknown. During Drosophila oogenesis, LD accumulation coincides with the actin remodeling necessary for follicle development. Loss of the LD-associated Adipose Triglyceride Lipase (ATGL) disrupts both actin bundle formation and cortical actin integrity, an unusual phenotype also seen when the prostaglandin (PG) synthase Pxt is missing. Dominant genetic interactions and PG treatment of follicles indicate that ATGL acts upstream of Pxt to regulate actin remodeling. Our data suggest that ATGL releases arachidonic acid (AA) from LDs to serve as the substrate for PG synthesis. Lipidomic analysis detects AA-containing triglycerides in ovaries, and these are increased when ATGL is lost. High levels of exogenous AA block follicle development; this is enhanced by impairing LD formation and suppressed by reducing ATGL. Together, these data support the model that AA stored in LD triglycerides is released by ATGL to drive the production of PGs, which promote the actin remodeling necessary for follicle development. We speculate that this pathway is conserved across organisms to regulate oocyte development and promote fertility.
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Affiliation(s)
- Michelle S. Giedt
- Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA
| | | | - Roger P. White
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Matthew R. Johnson
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Zon Weng Lai
- Harvard T.H. Chan Advanced Multi-omics Platform, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Tina L. Tootle
- Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA
| | - Michael A. Welte
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
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11
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Mastwal S, Li X, Stowell R, Manion M, Zhang W, Kim NS, Yoon KJ, Song H, Ming GL, Wang KH. Adolescent neurostimulation of dopamine circuit reverses genetic deficits in frontal cortex function. eLife 2023; 12:RP87414. [PMID: 37830916 PMCID: PMC10575630 DOI: 10.7554/elife.87414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023] Open
Abstract
Dopamine system dysfunction is implicated in adolescent-onset neuropsychiatric disorders. Although psychosis symptoms can be alleviated by antipsychotics, cognitive symptoms remain unresponsive and novel paradigms investigating the circuit substrates underlying cognitive deficits are critically needed. The frontal cortex and its dopaminergic input from the midbrain are implicated in cognitive functions and undergo maturational changes during adolescence. Here, we used mice carrying mutations in Arc or Disc1 to model mesofrontal dopamine circuit deficiencies and test circuit-based neurostimulation strategies to restore cognitive functions. We found that in a memory-guided spatial navigation task, frontal cortical neurons were activated coordinately at the decision-making point in wild-type but not Arc-/- mice. Chemogenetic stimulation of midbrain dopamine neurons or optogenetic stimulation of frontal cortical dopamine axons in a limited adolescent period consistently reversed genetic defects in mesofrontal innervation, task-coordinated neuronal activity, and memory-guided decision-making at adulthood. Furthermore, adolescent stimulation of dopamine neurons also reversed the same cognitive deficits in Disc1+/- mice. Our findings reveal common mesofrontal circuit alterations underlying the cognitive deficits caused by two different genes and demonstrate the feasibility of adolescent neurostimulation to reverse these circuit and behavioral deficits. These results may suggest developmental windows and circuit targets for treating cognitive deficits in neurodevelopmental disorders.
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Affiliation(s)
- Surjeet Mastwal
- Unit on Neural Circuits and Adaptive Behaviors, National Institute of Mental HealthBethesdaUnited States
| | - Xinjian Li
- Unit on Neural Circuits and Adaptive Behaviors, National Institute of Mental HealthBethesdaUnited States
| | - Rianne Stowell
- Department of Neuroscience, Del Monte Institute for Neuroscience, University of Rochester Medical CenterRochesterUnited States
| | - Matthew Manion
- Unit on Neural Circuits and Adaptive Behaviors, National Institute of Mental HealthBethesdaUnited States
| | - Wenyu Zhang
- Unit on Neural Circuits and Adaptive Behaviors, National Institute of Mental HealthBethesdaUnited States
- Department of Neuroscience, Del Monte Institute for Neuroscience, University of Rochester Medical CenterRochesterUnited States
| | - Nam-Shik Kim
- Department of Neuroscience, Mahoney Institute for Neurosciences, Perelman School of Medicine, University of PennsylvaniaPhiladelphiaUnited States
| | - Ki-Jun Yoon
- Department of Neuroscience, Mahoney Institute for Neurosciences, Perelman School of Medicine, University of PennsylvaniaPhiladelphiaUnited States
| | - Hongjun Song
- Department of Neuroscience, Mahoney Institute for Neurosciences, Perelman School of Medicine, University of PennsylvaniaPhiladelphiaUnited States
| | - Guo-Li Ming
- Department of Neuroscience, Mahoney Institute for Neurosciences, Perelman School of Medicine, University of PennsylvaniaPhiladelphiaUnited States
| | - Kuan Hong Wang
- Unit on Neural Circuits and Adaptive Behaviors, National Institute of Mental HealthBethesdaUnited States
- Department of Neuroscience, Del Monte Institute for Neuroscience, University of Rochester Medical CenterRochesterUnited States
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12
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Wang K, Ecker B, Li M, Huang J, Gao Y. CuPc Passivation of a MAPbBr 3 Single Crystal Surface. J Phys Chem C Nanomater Interfaces 2023; 127:19599-19606. [PMID: 37817921 PMCID: PMC10561261 DOI: 10.1021/acs.jpcc.3c04209] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/10/2023] [Indexed: 10/12/2023]
Abstract
In this study, a facile passivation for methylammonium lead bromide (MAPbBr3) single crystals is reported. Stability against moisture and light remains the most critical demerit of perovskite materials, which is improved by depositing a 40 Å thick hydrophobic copper phthalocyanine (CuPc) layer on top of the cleaved perovskite surface. The water and light exposure processes were monitored with X-ray photoelectron spectroscopy with precise control of the exposure time and pressure. It is found that the CuPc top layer could protect the sample from moisture infiltration at a water exposure of 1013 L, while the nonpassivated sample started to degrade at 108 L. During the light exposure, CuPc also slowed down the light-induced degradation, which is supported by the elemental ratio change of metallic lead and bromine. These results are further confirmed by the morphological comparison via scanning electron microscopy and focused ion beam.
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Affiliation(s)
- Ke Wang
- Department
of Physics and Astronomy, University of
Rochester, Rochester, New York 14627, United States
| | - Benjamin Ecker
- Department
of Physics and Astronomy, University of
Rochester, Rochester, New York 14627, United States
| | - Mingze Li
- Department
of Applied Physical Sciences, University
of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Jinsong Huang
- Department
of Applied Physical Sciences, University
of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Yongli Gao
- Department
of Physics and Astronomy, University of
Rochester, Rochester, New York 14627, United States
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13
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Piedmont ER, Christensen EE, Krauss TD, Partridge BE. Amphiphilic dendrons as supramolecular holdase chaperones. RSC Chem Biol 2023; 4:754-759. [PMID: 37799582 PMCID: PMC10549246 DOI: 10.1039/d3cb00086a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 09/05/2023] [Indexed: 10/07/2023] Open
Abstract
The aggregation of incompletely or incorrectly folded proteins is implicated in diseases including Alzheimer's, cataracts, and other maladies. Natural systems express protein chaperones to prevent or even reverse harmful protein aggregation. Synthetic chaperone-like systems have sought to mimic the action of their biological counterparts but typically require substantial optimization and high concentrations to be functional, or lack programmability that would enable the targeting of specific protein substrates. Here we report a series of amphiphilic dendrons that undergo assembly and inhibit the aggregation of fragment 16-22 amyloid β protein (Aβ16-22). We show that monodisperse dendrons with hydrophilic tetraethylene glycol chains and a hydrophobic core based on naphthyl and benzyl ethers undergo supramolecular assembly in aqueous solutions to form sphere-like particles. The solubility of these dendrons and their assemblies is tuned by varying the relative sizes of their hydrophilic and hydrophobic regions. Two water-soluble dendrons are discovered and shown, via fluorescence experiments with rhodamine 6G, to generate a hydrophobic environment. Furthermore, we demonstrate that sub-stoichiometric concentrations of these amphiphilic dendrons stabilize Aβ16-22 peptide with respect to aggregation, mimicking the activity of holdase chaperones. Our results highlight the potential of these amphiphilic molecules as the basis for a novel approach to artificial chaperones that may address many of the challenges associated with existing synthetic chaperone mimics.
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Affiliation(s)
| | - Erin E Christensen
- Department of Chemistry, University of Rochester Rochester NY 14627-0216 USA
| | - Todd D Krauss
- Department of Chemistry, University of Rochester Rochester NY 14627-0216 USA
- Institute of Optics, University of Rochester Rochester NY 14627-0186 USA
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14
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Malyk K, Pillai VG, Brennessel WW, Leon Baxin R, Silk ES, Nakamura DT, Kennedy CR. Distinguishing Competing Mechanistic Manifolds for C(acyl)-N Functionalization by a Ni/ N-Heterocyclic Carbene Catalyst System. JACS Au 2023; 3:2451-2457. [PMID: 37772178 PMCID: PMC10523494 DOI: 10.1021/jacsau.3c00283] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/31/2023] [Accepted: 08/16/2023] [Indexed: 09/30/2023]
Abstract
Carboxylic acid derivatives are appealing alternatives to organohalides as cross-coupling electrophiles for fine chemical synthesis due to their prevalence in biomass and bioactive small molecules as well as their ease of preparation and handling. Within this family, carboxamides comprise a versatile electrophile class for nickel-catalyzed coupling with carbon and heteroatom nucleophiles. However, even state-of-the-art C(acyl)-N functionalization and cross-coupling reactions typically require high catalyst loadings and specific substitution patterns. These challenges have proven difficult to overcome, in large part due to limited experimental mechanistic insight. In this work, we describe a detailed mechanistic case study of acylative coupling reactions catalyzed by the commonly employed Ni/SIPr catalyst system (SIPr = 1,3-bis(2,6-di-isopropylphenyl)-4,5-dihydroimidazol-2-ylidine). Stoichiometric organometallic studies, in situ spectroscopic measurements, and crossover experiments demonstrate the accessibility of Ni(0), Ni(I), and Ni(II) resting states. Although in situ precatalyst activation limits reaction efficiency, the low concentrations of active, SIPr-supported Ni(0) select for electrophile-first (closed-shell) over competing nucleophile-first (open-shell) mechanistic manifolds. We anticipate that the experimental insights into the nature and controlling features of these distinct pathways will accelerate rational improvements to cross-coupling methodologies involving pervasive carboxamide substrate motifs.
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Affiliation(s)
| | | | - William W. Brennessel
- University of Rochester, Department of Chemistry, Rochester, New York 14627, United States
| | - Roberto Leon Baxin
- University of Rochester, Department of Chemistry, Rochester, New York 14627, United States
| | - Elliot S. Silk
- University of Rochester, Department of Chemistry, Rochester, New York 14627, United States
| | - Daniel T. Nakamura
- University of Rochester, Department of Chemistry, Rochester, New York 14627, United States
| | - C. Rose Kennedy
- University of Rochester, Department of Chemistry, Rochester, New York 14627, United States
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15
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Letendre SL, Chen H, McKhann A, Roa J, Vecchio A, Daar ES, Berzins B, Hunt PW, Marra CM, Campbell TB, Coombs RW, Ma Q, Swaminathan S, Macatangay BJC, Morse GD, Miller T, Rusin D, Greninger AL, Ha B, Alston-Smith B, Robertson K, Paul R, Spudich S. Antiretroviral Therapy Intensification for Neurocognitive Impairment in Human Immunodeficiency Virus. Clin Infect Dis 2023; 77:866-874. [PMID: 37183889 PMCID: PMC10506779 DOI: 10.1093/cid/ciad265] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/23/2023] [Accepted: 04/27/2023] [Indexed: 05/16/2023] Open
Abstract
BACKGROUND Neurocognitive impairment (NCI) in people with HIV (PWH) on antiretroviral therapy (ART) is common and may result from persistent HIV replication in the central nervous system. METHODS A5324 was a randomized, double-blind, placebo-controlled, 96-week trial of ART intensification with dolutegravir (DTG) + MVC, DTG + Placebo, or Dual - Placebo in PWH with plasma HIV RNA <50 copies/mL on ART and NCI. The primary outcome was the change on the normalized total z score (ie, the mean of individual NC test z scores) at week 48. RESULTS Of 357 screened, 191 enrolled: 71% male, 51% Black race, 22% Hispanic ethnicity; mean age 52 years; mean CD4+ T-cells 681 cells/µL. Most (65%) had symptomatic HIV-associated NC disorder. Study drug was discontinued due to an adverse event in 15 (8%) and did not differ between arms (P = .17). Total z score, depressive symptoms, and daily functioning improved over time in all arms with no significant differences between them at week 48 or later. Adjusting for age, sex, race, study site, efavirenz use, or baseline z score did not alter the results. Body mass index modestly increased over 96 weeks (mean increase 0.32 kg/m2, P = .006) and did not differ between arms (P > .10). CONCLUSIONS This is the largest, randomized, placebo-controlled trial of ART intensification for NCI in PWH. The findings do not support empiric ART intensification as a treatment for NCI in PWH on suppressive ART. They also do not support that DTG adversely affects cognition, mood, or weight.
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Affiliation(s)
| | - Huichao Chen
- Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Ashley McKhann
- Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Jhoanna Roa
- DLH Corporation, Silver Spring, Maryland, USA
| | - Alyssa Vecchio
- University of North Carolina, Chapel Hill, North Carolina, USA
| | - Eric S Daar
- Lundquist Institute at Harbor–University of California–Los Angeles Medical Center, Torrance, California, USA
| | | | - Peter W Hunt
- University of California–San Francisco, San Francisco, California, USA
| | - Christina M Marra
- University of Washington School of Medicine, Seattle, Washington, USA
| | | | - Robert W Coombs
- University of Washington School of Medicine, Seattle, Washington, USA
| | - Qing Ma
- University at Buffalo, Buffalo, New York, USA
| | | | | | | | | | - David Rusin
- DLH Corporation, Silver Spring, Maryland, USA
| | | | - Belinda Ha
- ViiV Healthcare Ltd, Research Triangle Park, North Carolina, USA
| | | | - Kevin Robertson
- University of North Carolina, Chapel Hill, North Carolina, USA
| | - Robert Paul
- University of Missouri, St. Louis, Missouri, USA
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16
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Sandoval JS, Gong Q, Jiao L, McCamant DW. Stimulated Resonance Raman and Excited-State Dynamics in an Excitonically Coupled Bodipy Dimer: A Test for TD-DFT and the Polarizable Continuum Model. J Phys Chem A 2023; 127:7156-7167. [PMID: 37594191 PMCID: PMC10476205 DOI: 10.1021/acs.jpca.3c02978] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/27/2023] [Indexed: 08/19/2023]
Abstract
Bodipy is one of the most versatile and studied functional dyes due to its myriad applications and tunable spectral properties. One of the strategies to adjust their properties is the formation of Bodipy dimers and oligomers whose properties differ significantly from the corresponding monomer. Recently, we have developed a novel strategy for synthesizing α,α-ethylene-bridged Bodipy dimers; however, their excited-state dynamics was heretofore unknown. This work presents the ultrafast excited-state dynamics of a novel α,α-ethylene-bridge Bodipy dimer and its monomeric parent. The dimer's steady-state absorption and fluorescence suggest a Coulombic interaction between the monomeric units' transition dipole moments (TDMs), forming what is often termed a "J-dimer". The excited-state properties of the dimer were studied using molecular excitonic theory and time-dependent density functional theory (TD-DFT). We chose the M06 exchange-correlation functional (XCF) based on its ability to reproduce the experimental oscillator strength and resonance Raman spectra. Ultrafast laser spectroscopy reveals symmetry-breaking charge separation (SB-CS) in the dimer in polar solvents and the subsequent population of the charge-separated ion-pair state. The charge separation rate falls into the normal regime, while the charge recombination is in the inverted regime. Conversely, in nonpolar solvents, the charge separation is thermodynamically not feasible. In contrast, the monomer's excited-state dynamics shows no dependence on the solvent polarity. Furthermore, we found no evidence of significant structural rearrangement upon photoexcitation, regardless of the deactivation pathway. After an extensive analysis of the electronic transitions, we concluded that the solvent fluctuations in the local environment around the dimer create an asymmetry that drives and stabilizes the charge separation. This work sheds light on the charge-transfer process in this new set of molecular systems and how excited-state dynamics can be modeled by combining the experiment and theory.
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Affiliation(s)
- Juan S. Sandoval
- Department
of Chemistry, University of Rochester, 120 Trustee Road, Rochester, New York 14627, United States
| | - Qingbao Gong
- School
of Chemistry and Materials Science, Anhui
Normal University, Wuhu 241002, China
| | - Lijuan Jiao
- School
of Chemistry and Materials Science, Anhui
Normal University, Wuhu 241002, China
| | - David W. McCamant
- Department
of Chemistry, University of Rochester, 120 Trustee Road, Rochester, New York 14627, United States
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17
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Spinelli P, Fields AM, Falcone S, Mesaros C, Susiarjo M. Susceptibility to Low Vitamin B6 Diet-induced Gestational Diabetes Is Modulated by Strain Differences in Mice. Endocrinology 2023; 164:bqad130. [PMID: 37624591 PMCID: PMC10686696 DOI: 10.1210/endocr/bqad130] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/20/2023] [Accepted: 08/21/2023] [Indexed: 08/26/2023]
Abstract
Gestational diabetes is a common pregnancy complication that adversely influences the health and survival of mother and child. Pancreatic islet serotonin signaling plays an important role in β-cell proliferation in pregnancy, and environmental and genetic factors that disrupt serotonin signaling are associated with gestational diabetes in mice. Our previous studies show that pregnant C57BL/6J mice fed a diet that is low in vitamin B6, a critical co-factor in serotonin synthesis, develop hyperglycemia and glucose intolerance, phenotypes that are consistent with gestational diabetes in humans. The current study shows that, unlike in the C57BL/6J mice, low vitamin B6 diet does not alter glucose tolerance and insulin secretion in pregnant DBA/2J mice. The hypothesis to be tested in the current study is that pregnant DBA/2J mice are protected against low vitamin B6-induced gestational diabetes due to their higher expression and enzymatic activities of tissue nonspecific alkaline phosphatase (ALPL) relative to C57BL/6J. ALPL is a rate-limiting enzyme that regulates vitamin B6 bioavailability. Interestingly, treating pregnant DBA/2J mice with 7.5 mg/kg/day of the ALPL inhibitor SBI-425 is associated with glucose intolerance in low vitamin B6-fed mice, implying that inhibition of ALPL activity is sufficient to modulate resilience to low vitamin B6-induced metabolic impairment.
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Affiliation(s)
- Philip Spinelli
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
| | - Ashley M Fields
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
| | - Sierra Falcone
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
| | - Clementina Mesaros
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Martha Susiarjo
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
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18
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Geary MB, Orner CA, Shammas H, Reuter JM, Loiselle AE, Giordano BD, Wu CL. The surgical destabilization of the abductor muscle leads to development of instability-associated hip osteoarthritis in mice. J Hip Preserv Surg 2023; 10:158-165. [PMID: 38162262 PMCID: PMC10757407 DOI: 10.1093/jhps/hnad015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 02/07/2023] [Accepted: 05/24/2023] [Indexed: 01/03/2024] Open
Abstract
Osteoarthritis (OA) of the hip is a common and debilitating painful joint disease. However, there is paucity of surgically induced hip OA models in small animals that allow scientists to study the onset and progression of the disease. A growing body of evidence indicates a positive association between periarticular myotendinous pathology and the development of hip OA. Thus, in the current study, we aimed to establish a novel mouse instability-associated hip OA model via selective injury of the abductor complex around the hip joint. C57BL6/J mice were randomized to sham surgery or abductor injury, in which the myotendinous insertion at the third trochanter and greater trochanter were surgically detached. Mice were allowed free active movement until they were sacrificed at either 3 weeks or 20 weeks post-injury. Histologic analyses and immunohistochemical staining of the femoral head articular cartilage were performed, along with microCT (µCT) analysis to assess subchondral bone remodeling. We observed that mice receiving abductor injury exhibited significantly increased instability-associated OA severity with loss of proteoglycan and type II collagen staining compared to sham control mice at 20 weeks post-surgery, while comparable matrix metalloproteinase 13 expression was observed between injury and sham groups. No significant differences in subchondral bone remodeling were found after 3 or 20 weeks following injury. Our study further supports the link between abductor dysfunction and the development of instability-associated hip OA. Importantly, this novel surgically induced hip OA mouse model may provide a valuable tool for future investigations into the pathogenesis and treatment of hip OA.
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Affiliation(s)
- Michael B Geary
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood, Avenue, Box 665, Rochester, NY 14642, USA
| | - Caitlin A Orner
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood, Avenue, Box 665, Rochester, NY 14642, USA
| | - Helen Shammas
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood, Avenue, Box 665, Rochester, NY 14642, USA
- Department of Biomedical Engineering, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY 14642, USA
| | - John M Reuter
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood, Avenue, Box 665, Rochester, NY 14642, USA
| | - Alayna E Loiselle
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood, Avenue, Box 665, Rochester, NY 14642, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY 14642, USA
| | - Brian D Giordano
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood, Avenue, Box 665, Rochester, NY 14642, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY 14642, USA
| | - Chia-Lung Wu
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood, Avenue, Box 665, Rochester, NY 14642, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY 14642, USA
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19
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Schreiber E, Brennessel WW, Matson EM. Regioselectivity of concerted proton-electron transfer at the surface of a polyoxovanadate cluster. Chem Sci 2023; 14:1386-1396. [PMID: 36794190 PMCID: PMC9906639 DOI: 10.1039/d2sc05928b] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/19/2022] [Indexed: 01/19/2023] Open
Abstract
Proton-coupled electron transfer (PCET) is an important process in the activation and reactivity of metal oxide surfaces. In this work, we study the electronic structure of a reduced polyoxovanadate-alkoxide cluster bearing a single bridging oxide moiety. The structural and electronic implications of the incorporation of bridging oxide sites are revealed, most notably resulting in the quenching of cluster-wide electron delocalization in the most reduced state of the molecule. We correlate this attribute to a change in regioselectivity of PCET to the cluster surface (e.g. reactivity at terminal vs. bridging oxide groups). Reactivity localized at the bridging oxide site enables reversible storage of a single H-atom equivalent, changing the stoichiometry of PCET from a 2e-/2H+ process. Kinetic investigations indicate that the change in site of reactivity translates to an accelerated rate of e-/H+ transfer to the cluster surface. Our work summarizes the role which electronic occupancy and ligand density play in the uptake of e-/H+ pairs at metal oxide surfaces, providing design criteria for functional materials for energy storage and conversion processes.
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Affiliation(s)
- Eric Schreiber
- Department of Chemistry, University of Rochester Rochester NY 14611 USA
| | | | - Ellen M Matson
- Department of Chemistry, University of Rochester Rochester NY 14611 USA
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20
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Lewin Z, Vitek WS, O’Malley W, Astapova O. Resolution of Hyperandrogenism, Insulin Resistance and Acanthosis Nigricans (HAIR-AN) Syndrome After Sleeve Gastrectomy. JCEM Case Rep 2023; 1:luac030. [PMID: 37908254 PMCID: PMC10578405 DOI: 10.1210/jcemcr/luac030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Indexed: 11/02/2023]
Abstract
Hyperandrogenism, insulin resistance, and acanthosis nigricans (HAIR-AN) is a severe subphenotype of polycystic ovary syndrome (PCOS). A 32-year-old woman with HAIR-AN and class 3 obesity presented to an endocrinology clinic after she failed sequential trials of treatment with metformin, estrogen-progestin OCP, spironolactone, leuprolide, and a levonorgestrel intrauterine device. She complained of hirsutism and acanthosis nigricans severely affecting her quality of life and had secondary amenorrhea. Laboratory evaluation showed extremely elevated testosterone and insulin levels and elevated glycated hemoglobin A1c (HbA1c). She underwent laparoscopic sleeve gastrectomy. One year after the surgery, she lost 32% of her body weight and reported normalization of menses, dramatic improvement in hirsutism, and near-resolution of acanthosis nigricans. Her testosterone, insulin, and HbA1c normalized. This case demonstrates the central role of hyperinsulinemia in HAIR-AN and suggests that aggressive measures to normalize insulin resistance and reduce excess weight can effectively treat the reproductive abnormalities in this syndrome. We suggest that bariatric surgery can be an effective cure for HAIR-AN syndrome and that PCOS, including HAIR-AN, should be considered a comorbidity of obesity during evaluation of bariatric surgery candidates.
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Affiliation(s)
- Zoe Lewin
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York 14642, USA
| | - Wendy S Vitek
- Department of Obstetrics and Gynecology, University of Rochester School of Medicine and Dentistry, Rochester, New York 14642, USA
| | - William O’Malley
- Department of Surgery, University of Rochester School of Medicine and Dentistry, Rochester, New York 14642, USA
| | - Olga Astapova
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York 14642, USA
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21
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Abraham B, Agredo P, Mensah SG, Nilsson BL. Anion Effects on the Supramolecular Self-Assembly of Cationic Phenylalanine Derivatives. Langmuir 2022; 38:15494-15505. [PMID: 36473193 PMCID: PMC9776537 DOI: 10.1021/acs.langmuir.2c01394] [Citation(s) in RCA: 3] [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] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Supramolecular hydrogels have emerged as a class of promising biomaterials for applications such as drug delivery and tissue engineering. Self-assembling peptides have been well studied for such applications, but low molecular weight (LMW) amino acid-derived gelators have attracted interest as low-cost alternatives with similar emergent properties. Fluorenylmethyloxycarbonyl-phenylalanine (Fmoc-Phe) is one such privileged motif often chosen due to its inherent self-assembly potential. Previously, we developed cationic Fmoc-Phe-DAP gelators that assemble into hydrogel networks in aqueous NaCl solutions of sufficient ionic strength. The chloride anions in these solutions screen the cationic charge of the gelators to enable self-assembly to occur. Herein, we report the effects of varying the anions of sodium salts on the gelation potential, nanoscale morphology, and hydrogel viscoelastic properties of Fmoc-Phe-DAP and two of its fluorinated derivatives, Fmoc-3F-Phe-DAP and Fmoc-F5-Phe-DAP. It was observed that both the anion identity and gelator structure had a significant impact on the self-assembly and gelation properties of these derivatives. Changing the anion identity resulted in significant polymorphism of the nanoscale morphology of the assembled states that was dependent on the chemical structure of the gelator. The emergent viscoelastic character of the hydrogel networks was also found to be reliant on the anion identity and gelator structure. These results demonstrate the complex interplay between the gelator and environment that have a profound and often unpredictable impact on both self-assembly properties and emergent viscoelasticity in supramolecular hydrogels formed by LMW compounds. This work also illustrates the current lack of understanding that limits the rational design of potential biomaterials that will be in contact with complex biological fluids and provides motivation for additional research to correlate the chemical structure of LMW gelators with the structure and emergent properties of the resulting supramolecular assemblies as a function of environment.
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Affiliation(s)
- Brittany
L. Abraham
- Department
of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States
| | - Pamela Agredo
- Department
of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States
| | - Samantha G. Mensah
- Department
of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States
| | - Bradley L. Nilsson
- Department
of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States
- Materials
Science Program, University of Rochester, Rochester, New York 14627-0166, United States
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22
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Hu W, Gustin I, Krauss TD, Franco I. Tuning and Enhancing Quantum Coherence Time Scales in Molecules via Light-Matter Hybridization. J Phys Chem Lett 2022; 13:11503-11511. [PMID: 36469838 PMCID: PMC9761670 DOI: 10.1021/acs.jpclett.2c02877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Protecting quantum coherences in matter from the detrimental effects introduced by its environment is essential to employ molecules and materials in quantum technologies and develop enhanced spectroscopies. Here, we show how dressing molecular chromophores with quantum light in the context of optical cavities can be used to generate quantum superposition states with tunable coherence time scales that are longer than those of the bare molecule, even at room temperature and for molecules immersed in solvent. For this, we develop a theory of decoherence rates for molecular polaritonic states and demonstrate that quantum superpositions that involve such hybrid light-matter states can survive for times that are orders of magnitude longer than those of the bare molecule while remaining optically controllable. Further, by studying these tunable coherence enhancements in the presence of lossy cavities, we demonstrate that they can be enacted using present-day optical cavities. The analysis offers a viable strategy to engineer and increase quantum coherence lifetimes in molecules.
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Affiliation(s)
- Wenxiang Hu
- Materials
Science Program, University of Rochester, Rochester, New York14627, United States
| | - Ignacio Gustin
- Department
of Chemistry, University of Rochester, Rochester, New York14627, United States
| | - Todd D. Krauss
- Department
of Chemistry, University of Rochester, Rochester, New York14627, United States
- Institute
of Optics, University of Rochester, Rochester, New York14627, United States
| | - Ignacio Franco
- Department
of Chemistry, University of Rochester, Rochester, New York14627, United States
- Department
of Physics, University of Rochester, Rochester, New York14627, United States
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23
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Uchida H, Ingalls MH, Maruyama EO, Johnston CJ, Hernady E, Faustoferri RC, Ovitt CE. Short-term and bystander effects of radiation on murine submandibular glands. Dis Model Mech 2022; 15:dmm049570. [PMID: 36263624 PMCID: PMC9683099 DOI: 10.1242/dmm.049570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 10/13/2022] [Indexed: 11/20/2022] Open
Abstract
Many patients treated for head and neck cancers experience salivary gland hypofunction due to radiation damage. Understanding the mechanisms of cellular damage induced by radiation treatment is important in order to design methods of radioprotection. In addition, it is crucial to recognize the indirect effects of irradiation and the systemic responses that may alter saliva secretion. In this study, radiation was delivered to murine submandibular glands (SMGs) bilaterally, using a 137Cs gamma ray irradiator, or unilaterally, using a small-animal radiation research platform (SARRP). Analysis at 3, 24 and 48 h showed dynamic changes in mRNA and protein expression in SMGs irradiated bilaterally. Unilateral irradiation using the SARRP caused similar changes in the irradiated SMGs, as well as significant off-target, bystander effects in the non-irradiated contralateral SMGs.
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Affiliation(s)
- Hitoshi Uchida
- Center for Oral Biology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Matthew H. Ingalls
- Center for Oral Biology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Eri O. Maruyama
- Center for Oral Biology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Carl J. Johnston
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Eric Hernady
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Roberta C. Faustoferri
- Center for Oral Biology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Catherine E. Ovitt
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY 14642USA
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24
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Navarro-Dominguez B, Chang CH, Brand CL, Muirhead CA, Presgraves DC, Larracuente AM. Epistatic selection on a selfish Segregation Distorter supergene - drive, recombination, and genetic load. eLife 2022; 11:e78981. [PMID: 35486424 PMCID: PMC9122502 DOI: 10.7554/elife.78981] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 04/20/2022] [Indexed: 11/13/2022] Open
Abstract
Meiotic drive supergenes are complexes of alleles at linked loci that together subvert Mendelian segregation resulting in preferential transmission. In males, the most common mechanism of drive involves the disruption of sperm bearing one of a pair of alternative alleles. While at least two loci are important for male drive-the driver and the target-linked modifiers can enhance drive, creating selection pressure to suppress recombination. In this work, we investigate the evolution and genomic consequences of an autosomal, multilocus, male meiotic drive system, Segregation Distorter (SD) in the fruit fly, Drosophila melanogaster. In African populations, the predominant SD chromosome variant, SD-Mal, is characterized by two overlapping, paracentric inversions on chromosome arm 2R and nearly perfect (~100%) transmission. We study the SD-Mal system in detail, exploring its components, chromosomal structure, and evolutionary history. Our findings reveal a recent chromosome-scale selective sweep mediated by strong epistatic selection for haplotypes carrying Sd, the main driving allele, and one or more factors within the double inversion. While most SD-Mal chromosomes are homozygous lethal, SD-Mal haplotypes can recombine with other, complementing haplotypes via crossing over, and with wildtype chromosomes via gene conversion. SD-Mal chromosomes have nevertheless accumulated lethal mutations, excess non-synonymous mutations, and excess transposable element insertions. Therefore, SD-Mal haplotypes evolve as a small, semi-isolated subpopulation with a history of strong selection. These results may explain the evolutionary turnover of SD haplotypes in different populations around the world and have implications for supergene evolution broadly.
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Affiliation(s)
| | - Ching-Ho Chang
- Department of Biology, University of RochesterRochesterUnited States
| | - Cara L Brand
- Department of Biology, University of RochesterRochesterUnited States
| | - Christina A Muirhead
- Department of Biology, University of RochesterRochesterUnited States
- Ronin InstituteMontclairUnited States
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25
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Vaith J, Rodina D, Spaulding GC, Paradine SM. Pd-Catalyzed Heteroannulation Using N-Arylureas as a Sterically Undemanding Ligand Platform. J Am Chem Soc 2022; 144:6667-6673. [PMID: 35380831 PMCID: PMC9026275 DOI: 10.1021/jacs.2c01019] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Indexed: 12/03/2022]
Abstract
We report the development of ureas as sterically undemanding pro-ligands for Pd catalysis. N-Arylureas outperform phosphine ligands for the Pd-catalyzed heteroannulation of N-tosyl-o-bromoanilines and 1,3-dienes, engaging diverse coupling partners for the preparation of 2-subsituted indolines, including sterically demanding substrates that have not previously been tolerated. Experimental and computational studies on model Pd-urea and Pd-ureate complexes are consistent with monodentate binding through the nonsubstituted nitrogen, which is uncommon for metal-ureate complexes.
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Affiliation(s)
- Jakub Vaith
- Department of Chemistry, University
of Rochester, Rochester, New York 14627, United States
| | - Dasha Rodina
- Department of Chemistry, University
of Rochester, Rochester, New York 14627, United States
| | - Gregory C. Spaulding
- Department of Chemistry, University
of Rochester, Rochester, New York 14627, United States
| | - Shauna M. Paradine
- Department of Chemistry, University
of Rochester, Rochester, New York 14627, United States
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26
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Johnson TW, Dar IA, Donohue KL, Xu YY, Santiago E, Selioutski O, Marinescu MA, Maddox RK, Wu TT, Schifitto G, Gosev I, Choe R, Khan IR. Cerebral Blood Flow Hemispheric Asymmetry in Comatose Adults Receiving Extracorporeal Membrane Oxygenation. Front Neurosci 2022; 16:858404. [PMID: 35478849 PMCID: PMC9036108 DOI: 10.3389/fnins.2022.858404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/09/2022] [Indexed: 12/03/2022] Open
Abstract
Peripheral veno-arterial extracorporeal membrane oxygenation (ECMO) artificially oxygenates and circulates blood retrograde from the femoral artery, potentially exposing the brain to asymmetric perfusion. Though ECMO patients frequently experience brain injury, neurologic exams and imaging are difficult to obtain. Diffuse correlation spectroscopy (DCS) non-invasively measures relative cerebral blood flow (rBF) at the bedside using an optical probe on each side of the forehead. In this study we observed interhemispheric rBF differences in response to mean arterial pressure (MAP) changes in adult ECMO recipients. We recruited 13 subjects aged 21–78 years (7 with cardiac arrest, 4 with acute heart failure, and 2 with acute respiratory distress syndrome). They were dichotomized via Glasgow Coma Scale Motor score (GCS-M) into comatose (GCS-M ≤ 4; n = 4) and non-comatose (GCS-M > 4; n = 9) groups. Comatose patients had greater interhemispheric rBF asymmetry (ASYMrBF) vs. non-comatose patients over a range of MAP values (29 vs. 11%, p = 0.009). ASYMrBF in comatose patients resolved near a MAP range of 70–80 mmHg, while rBF remained symmetric through a wider MAP range in non-comatose patients. Correlations between post-oxygenator pCO2 or pH vs. ASYMrBF were significantly different between comatose and non-comatose groups. Our findings indicate that comatose patients are more likely to have asymmetric cerebral perfusion.
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Affiliation(s)
- Thomas W. Johnson
- Department of Neurology, University of Rochester Medical Center, Rochester, NY, United States
| | - Irfaan A. Dar
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, United States
| | - Kelly L. Donohue
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - Yama Y. Xu
- School of Arts and Sciences, University of Rochester, Rochester, NY, United States
| | - Esmeralda Santiago
- School of Arts and Sciences, University of Rochester, Rochester, NY, United States
| | - Olga Selioutski
- Department of Neurology, University of Rochester Medical Center, Rochester, NY, United States
| | - Mark A. Marinescu
- Department of Medicine, University of Rochester Medical Center, Rochester, NY, United States
| | - Ross K. Maddox
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, United States
- Department of Neuroscience, University of Rochester Medical Center, Rochester, NY, United States
| | - Tong Tong Wu
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY, United States
| | - Giovanni Schifitto
- Department of Neurology, University of Rochester Medical Center, Rochester, NY, United States
| | - Igor Gosev
- Division of Cardiac Surgery, Department of Surgery, University of Rochester Medical Center, Rochester, NY, United States
| | - Regine Choe
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, United States
- Department of Electrical and Computer Engineering, University of Rochester, Rochester, NY, United States
| | - Imad R. Khan
- Department of Neurology, University of Rochester Medical Center, Rochester, NY, United States
- *Correspondence: Imad R. Khan,
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27
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Chang CH, Gregory LE, Gordon KE, Meiklejohn CD, Larracuente AM. Unique structure and positive selection promote the rapid divergence of Drosophila Y chromosomes. eLife 2022; 11:e75795. [PMID: 34989337 PMCID: PMC8794474 DOI: 10.7554/elife.75795] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 12/18/2021] [Indexed: 02/06/2023] Open
Abstract
Y chromosomes across diverse species convergently evolve a gene-poor, heterochromatic organization enriched for duplicated genes, LTR retrotransposons, and satellite DNA. Sexual antagonism and a loss of recombination play major roles in the degeneration of young Y chromosomes. However, the processes shaping the evolution of mature, already degenerated Y chromosomes are less well-understood. Because Y chromosomes evolve rapidly, comparisons between closely related species are particularly useful. We generated de novo long-read assemblies complemented with cytological validation to reveal Y chromosome organization in three closely related species of the Drosophila simulans complex, which diverged only 250,000 years ago and share >98% sequence identity. We find these Y chromosomes are divergent in their organization and repetitive DNA composition and discover new Y-linked gene families whose evolution is driven by both positive selection and gene conversion. These Y chromosomes are also enriched for large deletions, suggesting that the repair of double-strand breaks on Y chromosomes may be biased toward microhomology-mediated end joining over canonical non-homologous end-joining. We propose that this repair mechanism contributes to the convergent evolution of Y chromosome organization across organisms.
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Affiliation(s)
- Ching-Ho Chang
- Department of Biology, University of RochesterRochesterUnited States
| | - Lauren E Gregory
- Department of Biology, University of RochesterRochesterUnited States
| | - Kathleen E Gordon
- School of Biological Sciences, University of Nebraska-LincolnLincolnUnited States
| | - Colin D Meiklejohn
- School of Biological Sciences, University of Nebraska-LincolnLincolnUnited States
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28
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Dye TD, Barbosu M, Siddiqi S, Pérez Ramos JG, Murphy H, Alcántara L, Pressman E. Science, healthcare system, and government effectiveness perception and COVID-19 vaccination acceptance and hesitancy in a global sample: an analytical cross-sectional analysis. BMJ Open 2021; 11:e049716. [PMID: 34815278 PMCID: PMC8611238 DOI: 10.1136/bmjopen-2021-049716] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 10/29/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Determinants of COVID-19 vaccine acceptance are complex; how perceptions of the effectiveness of science, healthcare and government impact personal COVID-19 vaccine acceptance is unclear, despite all three domains providing critical roles in development, funding and provision, and distribution of COVID-19 vaccine. OBJECTIVE To estimate impact of perception of science, healthcare systems, and government along with sociodemographic, psychosocial, and cultural characteristics on vaccine acceptance. DESIGN We conducted a global nested analytical cross-sectional study of how the perceptions of healthcare, government and science systems have impacted COVID-19 on vaccine acceptance. SETTING Global Facebook, Instagram and Amazon Mechanical Turk (mTurk) users from 173 countries. PARTICIPANTS 7411 people aged 18 years or over, and able to read English, Spanish, Italian, or French. MEASUREMENTS We used Χ2 analysis and logistic regression-derived adjusted Odds Ratios (aORs) and 95% CIs to evaluate the relationship between effectiveness perceptions and vaccine acceptance controlling for other factors. We used natural language processing and thematic analysis to analyse the role of vaccine-related narratives in open-ended explanations of effectiveness. RESULTS After controlling for confounding, attitude toward science was a strong predictor of vaccine acceptance, more so than other attitudes, demographic, psychosocial or COVID-19-related variables (aOR: 2.1; 95% CI: 1.8 to 2.5). The rationale for science effectiveness was dominated by vaccine narratives, which were uncommon in other domains. LIMITATIONS This study did not include participants from countries where Facebook and Amazon mTurk are not available, and vaccine acceptance reflected intention rather than actual behaviour. CONCLUSIONS As our findings show, vaccine-related issues dominate public perception of science's impact around COVID-19, and this perception of science relates strongly to the decision to obtain vaccination once available.
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Affiliation(s)
- Timothy D Dye
- Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, New York, USA
| | - Monica Barbosu
- Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, New York, USA
| | - Shazia Siddiqi
- Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, New York, USA
| | - José G Pérez Ramos
- Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, New York, USA
| | - Hannah Murphy
- Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, New York, USA
| | - Lisette Alcántara
- Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, New York, USA
| | - Eva Pressman
- Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, New York, USA
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29
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Wei X, Eickbush DG, Speece I, Larracuente AM. Heterochromatin-dependent transcription of satellite DNAs in the Drosophila melanogaster female germline. eLife 2021; 10:e62375. [PMID: 34259629 PMCID: PMC8321551 DOI: 10.7554/elife.62375] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 07/08/2021] [Indexed: 12/15/2022] Open
Abstract
Large blocks of tandemly repeated DNAs-satellite DNAs (satDNAs)-play important roles in heterochromatin formation and chromosome segregation. We know little about how satDNAs are regulated; however, their misregulation is associated with genomic instability and human diseases. We use the Drosophila melanogaster germline as a model to study the regulation of satDNA transcription and chromatin. Here we show that complex satDNAs (>100-bp repeat units) are transcribed into long noncoding RNAs and processed into piRNAs (PIWI interacting RNAs). This satDNA piRNA production depends on the Rhino-Deadlock-Cutoff complex and the transcription factor Moonshiner-a previously described non-canonical pathway that licenses heterochromatin-dependent transcription of dual-strand piRNA clusters. We show that this pathway is important for establishing heterochromatin at satDNAs. Therefore, satDNAs are regulated by piRNAs originating from their own genomic loci. This novel mechanism of satDNA regulation provides insight into the role of piRNA pathways in heterochromatin formation and genome stability.
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Affiliation(s)
- Xiaolu Wei
- Department of Biomedical Genetics, University of Rochester Medical CenterRochesterUnited States
| | - Danna G Eickbush
- Department of Biology, University of RochesterRochesterUnited States
| | - Iain Speece
- Department of Biology, University of RochesterRochesterUnited States
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30
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Younis A, Goldberger JJ, Kutyifa V, Zareba W, Polonsky B, Klein H, Aktas MK, Huang D, Daubert J, Estes M, Cannom D, McNitt S, Stein K, Goldenberg I. Predicted benefit of an implantable cardioverter-defibrillator: the MADIT-ICD benefit score. Eur Heart J 2021; 42:1676-1684. [PMID: 33417692 PMCID: PMC8088341 DOI: 10.1093/eurheartj/ehaa1057] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 09/02/2020] [Accepted: 12/12/2020] [Indexed: 12/31/2022] Open
Abstract
AIMS The benefit of prophylactic implantable cardioverter-defibrillator (ICD) is not uniform due to differences in the risk of life-threatening ventricular tachycardia (VT)/ventricular fibrillation (VF) and non-arrhythmic mortality. We aimed to develop an ICD benefit prediction score that integrates the competing risks. METHODS AND RESULTS The study population comprised all 4531 patients enrolled in the MADIT trials. Best-subsets Fine and Gray regression analysis was used to develop prognostic models for VT (≥200 b.p.m.)/VF vs. non-arrhythmic mortality (defined as death without prior sustained VT/VF). Eight predictors of VT/VF (male, age < 75 years, prior non-sustained VT, heart rate > 75 b.p.m., systolic blood pressure < 140 mmHg, ejection fraction ≤ 25%, myocardial infarction, and atrialarrhythmia) and 7 predictors of non-arrhythmic mortality (age ≥ 75 years, diabetes mellitus, body mass index < 23 kg/m2, ejection fraction ≤ 25%, New York Heart Association ≥II, ICD vs. cardiac resynchronization therapy with defibrillator, and atrial arrhythmia) were identified. The two scores were combined to create three MADIT-ICD benefit groups. In the highest benefit group, the 3-year predicted risk of VT/VF was three-fold higher than the risk of non-arrhythmic mortality (20% vs. 7%, P < 0.001). In the intermediate benefit group, the difference in the corresponding predicted risks was attenuated (15% vs. 9%, P < 0.01). In the lowest benefit group, the 3-year predicted risk of VT/VF was similar to the risk of non-arrhythmic mortality (11% vs. 12%, P = 0.41). A personalized ICD benefit score was developed based on the distribution of the two competing risks scores in the study population (https://is.gd/madit). Internal and external validation confirmed model stability. CONCLUSIONS We propose the novel MADIT-ICD benefit score that predicts the likelihood of prophylactic ICD benefit through personalized assessment of the risk of VT/VF weighed against the risk of non-arrhythmic mortality.
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Affiliation(s)
- Arwa Younis
- Division of Cardiology, Department of Medicine, Clinical Cardiovascular Research Center, University of Rochester Medical Center, 265 Crittenden Blvd CU 420653, NY 14642, USA
| | - Jeffrey J Goldberger
- Division of Cardiology, Miller School of Medicine, University of Miami, 1321 NW 14th St #510, Miami, FL 33125, USA
| | - Valentina Kutyifa
- Division of Cardiology, Department of Medicine, Clinical Cardiovascular Research Center, University of Rochester Medical Center, 265 Crittenden Blvd CU 420653, NY 14642, USA
| | - Wojciech Zareba
- Division of Cardiology, Department of Medicine, Clinical Cardiovascular Research Center, University of Rochester Medical Center, 265 Crittenden Blvd CU 420653, NY 14642, USA
| | - Bronislava Polonsky
- Division of Cardiology, Department of Medicine, Clinical Cardiovascular Research Center, University of Rochester Medical Center, 265 Crittenden Blvd CU 420653, NY 14642, USA
| | - Helmut Klein
- Division of Cardiology, Department of Medicine, Clinical Cardiovascular Research Center, University of Rochester Medical Center, 265 Crittenden Blvd CU 420653, NY 14642, USA
| | - Mehmet K Aktas
- Division of Cardiology, Department of Medicine, Clinical Cardiovascular Research Center, University of Rochester Medical Center, 265 Crittenden Blvd CU 420653, NY 14642, USA
| | - David Huang
- Division of Cardiology, Department of Medicine, Clinical Cardiovascular Research Center, University of Rochester Medical Center, 265 Crittenden Blvd CU 420653, NY 14642, USA
| | - James Daubert
- Division of Cardiology, Duke Medicine Circle Clinic 2F/2G, Durham, NC 27710, USA
| | - Mark Estes
- Division of Cardiology, UPMC Heart and Vascular Institute 1350 Locust Street, Suite 100 Pittsburgh, PA 15219, USA
| | - David Cannom
- Division of Cardiology, Good Samaritan Hospital, 1245 Wilshire Blvd, Ste 703, Los Angeles, CA 90017, USA
| | - Scott McNitt
- Division of Cardiology, Department of Medicine, Clinical Cardiovascular Research Center, University of Rochester Medical Center, 265 Crittenden Blvd CU 420653, NY 14642, USA
| | - Kenneth Stein
- Cardiac Rhythm Management, Boston Scientific Corp., 4100 Hamline Ave N, St Paul, MN 55101, USA
| | - Ilan Goldenberg
- Division of Cardiology, Department of Medicine, Clinical Cardiovascular Research Center, University of Rochester Medical Center, 265 Crittenden Blvd CU 420653, NY 14642, USA
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31
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Campbell EM, Sangster TC, Goncharov VN, Zuegel JD, Morse SFB, Sorce C, Collins GW, Wei MS, Betti R, Regan SP, Froula DH, Dorrer C, Harding DR, Gopalaswamy V, Knauer JP, Shah R, Mannion OM, Marozas JA, Radha PB, Rosenberg MJ, Collins TJB, Christopherson AR, Solodov AA, Cao D, Palastro JP, Follett RK, Farrell M. Direct-drive laser fusion: status, plans and future. Philos Trans A Math Phys Eng Sci 2021; 379:20200011. [PMID: 33280561 PMCID: PMC7741011 DOI: 10.1098/rsta.2020.0011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/19/2020] [Indexed: 06/12/2023]
Abstract
Laser-direct drive (LDD), along with laser indirect (X-ray) drive (LID) and magnetic drive with pulsed power, is one of the three viable inertial confinement fusion approaches to achieving fusion ignition and gain in the laboratory. The LDD programme is primarily being executed at both the Omega Laser Facility at the Laboratory for Laser Energetics and at the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory. LDD research at Omega includes cryogenic implosions, fundamental physics including material properties, hydrodynamics and laser-plasma interaction physics. LDD research on the NIF is focused on energy coupling and laser-plasma interactions physics at ignition-scale plasmas. Limited implosions on the NIF in the 'polar-drive' configuration, where the irradiation geometry is configured for LID, are also a feature of LDD research. The ability to conduct research over a large range of energy, power and scale size using both Omega and the NIF is a major positive aspect of LDD research that reduces the risk in scaling from OMEGA to megajoule-class lasers. The paper will summarize the present status of LDD research and plans for the future with the goal of ultimately achieving a burning plasma in the laboratory. This article is part of a discussion meeting issue 'Prospects for high gain inertial fusion energy (part 2)'.
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Affiliation(s)
- E. M. Campbell
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - T. C. Sangster
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - V. N. Goncharov
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - J. D. Zuegel
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - S. F. B. Morse
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - C. Sorce
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - G. W. Collins
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - M. S. Wei
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - R. Betti
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - S. P. Regan
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - D. H. Froula
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - C. Dorrer
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - D. R. Harding
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - V. Gopalaswamy
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - J. P. Knauer
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - R. Shah
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - O. M. Mannion
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - J. A. Marozas
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - P. B. Radha
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - M. J. Rosenberg
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - T. J. B. Collins
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - A. R. Christopherson
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - A. A. Solodov
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - D. Cao
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - J. P. Palastro
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - R. K. Follett
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, NY 14623-1299, USA
| | - M. Farrell
- General Atomics, 3550 General Atomics Court, San Diego, CA, 92121-1122, USA
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32
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Starr LR, Hershenberg R, Shaw ZA, Li YI, Santee AC. The perils of murky emotions: Emotion differentiation moderates the prospective relationship between naturalistic stress exposure and adolescent depression. Emotion 2020; 20:927-938. [PMID: 31246045 PMCID: PMC6933107 DOI: 10.1037/emo0000630] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Negative emotion differentiation (NED) refers to the ability to identify and label discrete negative emotions. Low NED has been previously linked to depression and other indices of low psychological well-being. However, this construct has rarely been explored during adolescence, a time of escalating depression risk, or examined in the context of naturalistic stressors. Further, the association between NED and depression has never been tested longitudinally. We propose a diathesis-stress model wherein low NED amplifies the association between stressful life events (SLEs) and depression. A sample of 233 community-recruited midadolescents (Mage 15.90 years, 54% female) completed diagnostic interviews and reported on mood and daily stressors 4 times per day for 7 days. SLEs were assessed using a semistructured interview with diagnosis-blind team coding based on the contextual threat method. Follow-up interviews were conducted 1.5 years after baseline. Low NED was correlated with depression but did not predict prospective changes in depression as a main effect. Confirming predictions and supporting a diathesis-stress model, low NED predicted (a) within-subjects associations between daily hassles and momentary depressed mood, (b) between-subjects associations between SLE severity and depression, and (c) prospective associations between SLE severity and increases in depression at follow-up. Results were specific to negative (vs. positive) emotion differentiation. Results suggest that low NED is primarily depressogenic in the context of high stress exposure. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
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Affiliation(s)
- Lisa R Starr
- Department of Clinical and Social Sciences in Psychology
| | | | - Zoey A Shaw
- Department of Clinical and Social Sciences in Psychology
| | - Y Irina Li
- Department of Clinical and Social Sciences in Psychology
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Sproul JS, Khost DE, Eickbush DG, Negm S, Wei X, Wong I, Larracuente AM. Dynamic Evolution of Euchromatic Satellites on the X Chromosome in Drosophila melanogaster and the simulans Clade. Mol Biol Evol 2020; 37:2241-2256. [PMID: 32191304 PMCID: PMC7403614 DOI: 10.1093/molbev/msaa078] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Satellite DNAs (satDNAs) are among the most dynamically evolving components of eukaryotic genomes and play important roles in genome regulation, genome evolution, and speciation. Despite their abundance and functional impact, we know little about the evolutionary dynamics and molecular mechanisms that shape satDNA distributions in genomes. Here, we use high-quality genome assemblies to study the evolutionary dynamics of two complex satDNAs, Rsp-like and 1.688 g/cm3, in Drosophila melanogaster and its three nearest relatives in the simulans clade. We show that large blocks of these repeats are highly dynamic in the heterochromatin, where their genomic location varies across species. We discovered that small blocks of satDNA that are abundant in X chromosome euchromatin are similarly dynamic, with repeats changing in abundance, location, and composition among species. We detail the proliferation of a rare satellite (Rsp-like) across the X chromosome in D. simulans and D. mauritiana. Rsp-like spread by inserting into existing clusters of the older, more abundant 1.688 satellite, in events likely facilitated by microhomology-mediated repair pathways. We show that Rsp-like is abundant on extrachromosomal circular DNA in D. simulans, which may have contributed to its dynamic evolution. Intralocus satDNA expansions via unequal exchange and the movement of higher order repeats also contribute to the fluidity of the repeat landscape. We find evidence that euchromatic satDNA repeats experience cycles of proliferation and diversification somewhat analogous to bursts of transposable element proliferation. Our study lays a foundation for mechanistic studies of satDNA proliferation and the functional and evolutionary consequences of satDNA movement.
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Affiliation(s)
- John S Sproul
- Department of Biology, University of Rochester, Rochester, NY
| | | | | | - Sherif Negm
- Department of Biology, University of Rochester, Rochester, NY
| | - Xiaolu Wei
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY
| | - Isaac Wong
- Department of Biology, University of Rochester, Rochester, NY
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Chu CC, Pinney JJ, Whitehead HE, Rivera-Escalera F, VanDerMeid KR, Zent CS, Elliott MR. High-resolution quantification of discrete phagocytic events by live cell time-lapse high-content microscopy imaging. J Cell Sci 2020; 133:jcs237883. [PMID: 32005699 PMCID: PMC7075070 DOI: 10.1242/jcs.237883] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 01/17/2020] [Indexed: 12/20/2022] Open
Abstract
Phagocytosis is a dynamic process central to immunity and tissue homeostasis. Current methods for quantification of phagocytosis largely rely on indirect or static measurements, such as target clearance or dye uptake, and thus provide limited information about engulfment rates or target processing. Improved kinetic measurements of phagocytosis could provide useful, basic insights in many areas. We present a live-cell, time-lapse and high-content microscopy imaging method based on the detection and quantification of fluorescent dye 'voids' within phagocytes that result from target internalization to quantify phagocytic events with high temporal resolution. Using this method, we measure target cell densities and antibody concentrations needed for optimal antibody-dependent cellular phagocytosis. We compare void formation and dye uptake methods for phagocytosis detection, and examine the connection between target cell engulfment and phagolysosomal processing. We demonstrate how this approach can be used to measure distinct forms of phagocytosis, and changes in macrophage morphology during phagocytosis related to both engulfment and target degradation. Our results provide a high-resolution method for quantifying phagocytosis that provides opportunities to better understand the cellular and molecular regulation of this fundamental biological process.
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Affiliation(s)
- Charles C Chu
- Department of Medicine and Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Jonathan J Pinney
- Center for Vaccine Biology & Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Hannah E Whitehead
- Center for Vaccine Biology & Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Fatima Rivera-Escalera
- Center for Vaccine Biology & Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Karl R VanDerMeid
- Department of Medicine and Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Clive S Zent
- Department of Medicine and Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Michael R Elliott
- Center for Vaccine Biology & Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA
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Abstract
Like humans, monkeys can make accurate judgements about their own memory by reporting their confidence during cognitive tasks. Some have suggested that animals use associative learning to make accurate confidence judgements, while others have suggested animals directly access and estimate the strength of their memories. Here we test a third, non-exclusive possibility: perhaps monkeys, like humans, base metacognitive inferences on heuristic cues. Humans are known to use cues like perceptual fluency (e.g. how easy something is to see) when making metacognitive judgements. We tested monkeys using a match-to-sample task in which the perceptual fluency of the stimuli was manipulated. The monkeys made confidence wagers on their accuracy before or after each trial. We found that monkeys' wagers were affected by perceptual fluency even when their accuracy was not. This is novel evidence that animals are susceptible to metacognitive illusions similar to those experienced by humans.
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Affiliation(s)
- Stephen Ferrigno
- Department of Brain and Cognitive Sciences, University of Rochester, Rochester, NY, USA
| | - Nate Kornell
- Department of Psychology, Williams College, Williamstown, MA, USA
| | - Jessica F Cantlon
- Department of Brain and Cognitive Sciences, University of Rochester, Rochester, NY, USA
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