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Washington University School of Medicine

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Bjc Today Dec 2015

Bjc Today

BJC Today

No abstract provided.


Progressive Hearing Loss In Mice Carrying A Mutation In Usp53, Marcin Kazmierczak, Suzan L. Harris, Piotr Kazmierczak, Prahar Shah, Valentin Starovoytov, Kevin K. Ohlemiller, Martin Schwander Nov 2015

Progressive Hearing Loss In Mice Carrying A Mutation In Usp53, Marcin Kazmierczak, Suzan L. Harris, Piotr Kazmierczak, Prahar Shah, Valentin Starovoytov, Kevin K. Ohlemiller, Martin Schwander

Open Access Publications

UNLABELLED: Disordered protein ubiquitination has been linked to neurodegenerative disease, yet its role in inner ear homeostasis and hearing loss is essentially unknown. Here we show that progressive hearing loss in the ethylnitrosourea-generated mambo mouse line is caused by a mutation in Usp53, a member of the deubiquitinating enzyme family. USP53 contains a catalytically inactive ubiquitin-specific protease domain and is expressed in cochlear hair cells and a subset of supporting cells. Although hair cell differentiation is unaffected in mambo mice, outer hair cells degenerate rapidly after the first postnatal week. USP53 colocalizes and interacts with the tight junction scaffolding proteins …


In Vivo Evaluation Of Adipose-Derived Stromal Cells Delivered With A Nanofiber Scaffold For Tendon-To-Bone Repair, Justin Lipner, Hua Shen, Leonardo Cavinatto, Wenying Liu, Necat Havlioglu, Younan Xia, Leesa M. Galatz, Stavros Thomopoulos Nov 2015

In Vivo Evaluation Of Adipose-Derived Stromal Cells Delivered With A Nanofiber Scaffold For Tendon-To-Bone Repair, Justin Lipner, Hua Shen, Leonardo Cavinatto, Wenying Liu, Necat Havlioglu, Younan Xia, Leesa M. Galatz, Stavros Thomopoulos

Open Access Publications

No abstract provided.


Bjc Today Nov 2015

Bjc Today

BJC Today

No abstract provided.


Propagated Infra-Slow Intrinsic Brain Activity Reorganizes Across Wake And Slow Wave Sleep, Anish Mitra, Abraham Z. Snyder, Enzo Tagliazucchi, Helmut Laufs, Marcus E. Raichle Nov 2015

Propagated Infra-Slow Intrinsic Brain Activity Reorganizes Across Wake And Slow Wave Sleep, Anish Mitra, Abraham Z. Snyder, Enzo Tagliazucchi, Helmut Laufs, Marcus E. Raichle

Open Access Publications

Propagation of slow intrinsic brain activity has been widely observed in electrophysiogical studies of slow wave sleep (SWS). However, in human resting state fMRI (rs-fMRI), intrinsic activity has been understood predominantly in terms of zero-lag temporal synchrony (functional connectivity) within systems known as resting state networks (RSNs). Prior rs-fMRI studies have found that RSNs are generally preserved across wake and sleep. Here, we use a recently developed analysis technique to study propagation of infra-slow intrinsic blood oxygen level dependent (BOLD) signals in normal adults during wake and SWS. This analysis reveals marked changes in propagation patterns in SWS vs. wake. …


Research Digest - November 2015, Division Of Public Health Sciences, Department Of Surgery, Washington University School Of Medicine In St. Louis Nov 2015

Research Digest - November 2015, Division Of Public Health Sciences, Department Of Surgery, Washington University School Of Medicine In St. Louis

Newsletters from the Division of Public Health Sciences

No abstract provided.


Optics Of Cone Photoreceptors In The Chicken (Gallus Gallus Domesticus), David Wilby, Matthew B Toomey, Peter Olsson, Rikard Frederiksen, M Carter Cornwall, Ruth Oulton, Almut Kelber, Joseph C Corbo, Nicholas W Roberts Oct 2015

Optics Of Cone Photoreceptors In The Chicken (Gallus Gallus Domesticus), David Wilby, Matthew B Toomey, Peter Olsson, Rikard Frederiksen, M Carter Cornwall, Ruth Oulton, Almut Kelber, Joseph C Corbo, Nicholas W Roberts

2010-2019 OA Pubs

Vision is the primary sensory modality of birds, and its importance is evident in the sophistication of their visual systems. Coloured oil droplets in the cone photoreceptors represent an adaptation in the avian retina, acting as long-pass colour filters. However, we currently lack understanding of how the optical properties and morphology of component structures (e.g. oil droplet, mitochondrial ellipsoid and outer segment) of the cone photoreceptor influence the transmission of light into the outer segment and the ultimate effect they have on receptor sensitivity. In this study, we use data from microspectrophotometry, digital holographic microscopy and electron microscopy to inform …


Human And Murine Ifit1 Proteins Do Not Restrict Infection Of Negative-Sense Rna Viruses Of The Orthomyxoviridae, Bunyaviridae, And Filoviridae Families, Amelia K. Pinto, Graham D. Williams, Kristy J. Szretter, James P. White, José Luiz Proença-Módena, Gai Liu, Judith Olejnik, James D. Brien, Hideki Ebihara, Elke Mühlberger, Gaya Amarasinghe, Michael S. Diamond, Adrianus C.M. Boon Sep 2015

Human And Murine Ifit1 Proteins Do Not Restrict Infection Of Negative-Sense Rna Viruses Of The Orthomyxoviridae, Bunyaviridae, And Filoviridae Families, Amelia K. Pinto, Graham D. Williams, Kristy J. Szretter, James P. White, José Luiz Proença-Módena, Gai Liu, Judith Olejnik, James D. Brien, Hideki Ebihara, Elke Mühlberger, Gaya Amarasinghe, Michael S. Diamond, Adrianus C.M. Boon

Open Access Publications

UNLABELLED: Interferon-induced protein with tetratricopeptide repeats 1 (IFIT1) is a host protein with reported cell-intrinsic antiviral activity against several RNA viruses. The proposed basis for the activity against negative-sense RNA viruses is the binding to exposed 5'-triphosphates (5'-ppp) on the genome of viral RNA. However, recent studies reported relatively low binding affinities of IFIT1 for 5'-ppp RNA, suggesting that IFIT1 may not interact efficiently with this moiety under physiological conditions. To evaluate the ability of IFIT1 to have an impact on negative-sense RNA viruses, we infected Ifit1(-/-) and wild-type control mice and primary cells with four negative-sense RNA viruses (influenza …


Bjc Today Aug 2015

Bjc Today

BJC Today

No abstract provided.


Hepatocyte Growth Factor And Met Support Mouse Enteric Nervous System Development, The Peristaltic Response, And Intestinal Epithelial Proliferation In Response To Injury, Marina Avetisyan, Hongtao Wang, Ellen Merrick Schill, Saya Bery, John R. Grider, John A. Hassell, Thaddeus Stappenbeck, Robert O. Heuckeroth Aug 2015

Hepatocyte Growth Factor And Met Support Mouse Enteric Nervous System Development, The Peristaltic Response, And Intestinal Epithelial Proliferation In Response To Injury, Marina Avetisyan, Hongtao Wang, Ellen Merrick Schill, Saya Bery, John R. Grider, John A. Hassell, Thaddeus Stappenbeck, Robert O. Heuckeroth

Open Access Publications

UNLABELLED: Factors providing trophic support to diverse enteric neuron subtypes remain poorly understood. We tested the hypothesis that hepatocyte growth factor (HGF) and the HGF receptor MET might support some types of enteric neurons. HGF and MET are expressed in fetal and adult enteric nervous system. In vitro, HGF increased enteric neuron differentiation and neurite length, but only if vanishingly small amounts (1 pg/ml) of glial cell line-derived neurotrophic factor were included in culture media. HGF effects were blocked by phosphatidylinositol-3 kinase inhibitor and by MET-blocking antibody. Both of these inhibitors and MEK inhibition reduced neurite length. In adult mice, …


Bjc Today Aug 2015

Bjc Today

BJC Today

No abstract provided.


Bjc Today Jul 2015

Bjc Today

BJC Today

No abstract provided.


Biphenotypic (Hepatobiliary) Primary Liver Carcinomas: The Work In Progress, Elizabeth M. Brunt, Valerie Paradis, Christine Sempoux, Neil D. Theise Jul 2015

Biphenotypic (Hepatobiliary) Primary Liver Carcinomas: The Work In Progress, Elizabeth M. Brunt, Valerie Paradis, Christine Sempoux, Neil D. Theise

Open Access Publications

Recent WHO classification for combined hepatocellular-cholangiocarcinoma and recognized stem cell subtypes has increased attention to such tumors; however, the resulting burst of reporting and research indicates that this classification, while provocative, is incomplete for description of the full array of primary liver carcinomas with biphenotypic (hepatobiliary) differentiation. We review the history of such lesions and consider the wider array of such tumors previously described. Mixed hepatobiliary phenotypes and immunophenotypes are found in individual tumors at the tissue level - with architectural and cytologic features supportive of both differentiation states - and at the cellular level, with individual cells that display …


Bjc Today Jun 2015

Bjc Today

BJC Today

No abstract provided.


Bjc Today May 2015

Bjc Today

BJC Today

No abstract provided.


Molecular Dynamics Simulations Of Kirbac1.1 Mutants Reveal Global Gating Changes Of Kir Channels, Tobias Linder, Shizhen Wang, Eva-Maria Zangerl-Plessl, Colin G Nichols, Anna Stary-Weinzinger Apr 2015

Molecular Dynamics Simulations Of Kirbac1.1 Mutants Reveal Global Gating Changes Of Kir Channels, Tobias Linder, Shizhen Wang, Eva-Maria Zangerl-Plessl, Colin G Nichols, Anna Stary-Weinzinger

2010-2019 OA Pubs

Prokaryotic inwardly rectifying (KirBac) potassium channels are homologous to mammalian Kir channels. Their activity is controlled by dynamical conformational changes that regulate ion flow through a central pore. Understanding the dynamical rearrangements of Kir channels during gating requires high-resolution structure information from channels crystallized in different conformations and insight into the transition steps, which are difficult to access experimentally. In this study, we use MD simulations on wild type KirBac1.1 and an activatory mutant to investigate activation gating of KirBac channels. Full atomistic MD simulations revealed that introducing glutamate in position 143 causes significant widening at the helix bundle crossing …


Bjc Today Apr 2015

Bjc Today

BJC Today

No abstract provided.


Pain Treatment And Antiretroviral Medication Adherence Among Vulnerable Hiv-Positive Patients, Hilary L. Surratt, Steven P. Kurtz, Maria A. Levi-Minzi, Theodore J. Cicero, Kiyomi Tsuyuki, Catherine L. O'Grady Mar 2015

Pain Treatment And Antiretroviral Medication Adherence Among Vulnerable Hiv-Positive Patients, Hilary L. Surratt, Steven P. Kurtz, Maria A. Levi-Minzi, Theodore J. Cicero, Kiyomi Tsuyuki, Catherine L. O'Grady

Open Access Publications

No abstract provided.


Adamtsl2 Deletion Results In Bronchial Fibrillin Microfibril Accumulation And Bronchial Epithelial Dysplasia: A Novel Mouse Model Providing Insights On Geleophysic Dysplasia, Dirk Hubmacher, Lauren W. Wang, Robert P. Mecham, Dieter P. Reinhardt, Suneel S. Apte Mar 2015

Adamtsl2 Deletion Results In Bronchial Fibrillin Microfibril Accumulation And Bronchial Epithelial Dysplasia: A Novel Mouse Model Providing Insights On Geleophysic Dysplasia, Dirk Hubmacher, Lauren W. Wang, Robert P. Mecham, Dieter P. Reinhardt, Suneel S. Apte

Open Access Publications

No abstract provided.


Uni-Directional Ciliary Membrane Protein Trafficking By A Cytoplasmic Retrograde Ift Motor And Ciliary Ectosome Shedding, Muqing Cao, Jue Ning, Carmen I. Hernandez-Lara, Olivier Belzile, Qian Wang, Susan K. Dutcher, Yanjie Liu, William J. Snell Feb 2015

Uni-Directional Ciliary Membrane Protein Trafficking By A Cytoplasmic Retrograde Ift Motor And Ciliary Ectosome Shedding, Muqing Cao, Jue Ning, Carmen I. Hernandez-Lara, Olivier Belzile, Qian Wang, Susan K. Dutcher, Yanjie Liu, William J. Snell

Open Access Publications

The role of the primary cilium in key signaling pathways depends on dynamic regulation of ciliary membrane protein composition, yet we know little about the motors or membrane events that regulate ciliary membrane protein trafficking in existing organelles. Recently, we showed that cilium-generated signaling in Chlamydomonas induced rapid, anterograde IFT-independent, cytoplasmic microtubule-dependent redistribution of the membrane polypeptide, SAG1-C65, from the plasma membrane to the periciliary region and the ciliary membrane. Here, we report that the retrograde IFT motor, cytoplasmic dynein 1b, is required in the cytoplasm for this rapid redistribution. Furthermore, signaling-induced trafficking of SAG1-C65 into cilia is unidirectional and …


Together: Every Woman's Guide To Preventing Breast Cancer, Graham A. Colditz, Katherine N. Weilbaecher, Hank Dart Jan 2015

Together: Every Woman's Guide To Preventing Breast Cancer, Graham A. Colditz, Katherine N. Weilbaecher, Hank Dart

Cancer Prevention Faculty Publications

No abstract provided.


Pacs Bulletin 2015-2016, Program In Audiology And Communication Sciences Jan 2015

Pacs Bulletin 2015-2016, Program In Audiology And Communication Sciences

PACS News

No abstract provided.


Using Click-Evoked Auditory Brainstem Response Waveforms To Measure Hearing Loss In The Bottlenose Dolphin (Tursiops Truncatus), Krysta L. Gasser Rutledge Jan 2015

Using Click-Evoked Auditory Brainstem Response Waveforms To Measure Hearing Loss In The Bottlenose Dolphin (Tursiops Truncatus), Krysta L. Gasser Rutledge

Independent Studies and Capstones

Developing an improved methodology for efficient and informative hearing assessment in marine mammals would prove insightful in expanding current knowledge regarding marine mammal hearing sensitivity, particularly in studying the effects of anthropogenic noise. This study examines the click-evoked auditory brainstem response in relation to upper frequency limit of hearing in the bottlenose dolphin (Tursiops truncatus) as a proxy for hearing capacity.


Improving Breast Cancer Services For African-American Women Living In St. Louis, Lailea Noel, Shahnjayla K. Connors, Melody S. Goodman, Sarah Gehlert Jan 2015

Improving Breast Cancer Services For African-American Women Living In St. Louis, Lailea Noel, Shahnjayla K. Connors, Melody S. Goodman, Sarah Gehlert

Biostatistics Faculty Publications

No abstract provided.


Neuroimaging In Tourette Syndrome: Research Highlights From 2014 To 2015, Deanna J. Greene, Bradley L. Schlaggar, Kevin J. Black Jan 2015

Neuroimaging In Tourette Syndrome: Research Highlights From 2014 To 2015, Deanna J. Greene, Bradley L. Schlaggar, Kevin J. Black

Psychiatry Faculty Publications

No abstract provided.


The Missing Piece: An Online Resource For Deaf Educators Working With Children With A Dual Diagnosis Of Deafness And Autism Spectrum Disorder, Haley Shae Brown Jan 2015

The Missing Piece: An Online Resource For Deaf Educators Working With Children With A Dual Diagnosis Of Deafness And Autism Spectrum Disorder, Haley Shae Brown

Independent Studies and Capstones

This paper will examine the need for a comprehensive online resource that contains easily accessible information about autism spectrum disorder (ASD). This includes: general facts about ASD, how the characteristics of ASD may compare to those exhibited by a child who is deaf or hard of hearing, and potential methods of instruction for children with both diagnoses.


The Big Five Personality Traits As They Correlate With Subjective Measures Of Hearing Loss And Self Perception In Newly Identified Adults, To Predict Hearing Aid Benefits, A'Ja Danell Neal Jan 2015

The Big Five Personality Traits As They Correlate With Subjective Measures Of Hearing Loss And Self Perception In Newly Identified Adults, To Predict Hearing Aid Benefits, A'Ja Danell Neal

Independent Studies and Capstones

This study makes use of the Big Five Inventory Personality Assessment to attempt to predict perceived hearing aid benefit, and compare with the Client Oriented Scale of Improvement. The end goal is to assess if identification of personality traits can be used as a counseling tool to promote hearing aid uptake and positive perceived benefit.


Cd4+ And Cd8+ T Cells Have Opposing Roles In Breast Cancer Progression And Outcome, Yi Huang, Chunling Ma, Qunyuan Zhang, Jian Ye, Fang Wang, Yanping Zhang, Pamela Hunborg, Mark A. Varvares, Daniel F. Hoft, Eddy C. Hsueh, Guangyong Peng Jan 2015

Cd4+ And Cd8+ T Cells Have Opposing Roles In Breast Cancer Progression And Outcome, Yi Huang, Chunling Ma, Qunyuan Zhang, Jian Ye, Fang Wang, Yanping Zhang, Pamela Hunborg, Mark A. Varvares, Daniel F. Hoft, Eddy C. Hsueh, Guangyong Peng

Open Access Publications

No abstract provided.


De Novo Design Of Heat-Repressible Rna Thermosensors In E-Coli, Allison Hoynes-O'Connor, Kristina Hinman, Lukas Kirchner, Tae Seok Moon Jan 2015

De Novo Design Of Heat-Repressible Rna Thermosensors In E-Coli, Allison Hoynes-O'Connor, Kristina Hinman, Lukas Kirchner, Tae Seok Moon

Open Access Publications

No abstract provided.


Does Diacylglycerol Accumulation In Fatty Liver Disease Cause Hepatic Insulin Resistance?, Brian N. Finck, Angela M. Hall Jan 2015

Does Diacylglycerol Accumulation In Fatty Liver Disease Cause Hepatic Insulin Resistance?, Brian N. Finck, Angela M. Hall

Open Access Publications

No abstract provided.