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2020

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Articles 31 - 60 of 1778

Full-Text Articles in Medical Sciences

Beyond The Eye: The Neural Signature Of Cerebral Visual Processing In Children With Cerebral Palsy, Jacy R. Hannan Dec 2020

Beyond The Eye: The Neural Signature Of Cerebral Visual Processing In Children With Cerebral Palsy, Jacy R. Hannan

Theses & Dissertations

Cerebral palsy (CP) is a permanent, non-progressive neuromuscular disorder diagnosed early in childhood. Frequently the lesion that causes the motor impairments in individuals with CP concurrently disrupts the visual networks, placing them at a high risk of cerebral visual dysfunctions. Cerebral visual impairment (CVI) often remains unrecognized or misdiagnosed in people with CP. Despite the crucial role of visual function in the development of movement and cognition, the neurophysiological basis of the cerebral visual dysfunctions is almost entirely unknown. This investigation aimed to examine the neurophysiological mechanisms underlying cerebral visual dysfunction in children with CP. Specifically, this research used magnetoencephalographic …


Bilirubin Nanoparticles Reduce Diet-Induced Hepatic Steatosis, Improve Fat Utilization, And Increase Plasma Β-Hydroxybutyrate, Terry D. Hinds Jr., Justin F. Creeden, Darren M. Gordon, Donald F. Stec, Matthew C. Donald, David E. Stec Dec 2020

Bilirubin Nanoparticles Reduce Diet-Induced Hepatic Steatosis, Improve Fat Utilization, And Increase Plasma Β-Hydroxybutyrate, Terry D. Hinds Jr., Justin F. Creeden, Darren M. Gordon, Donald F. Stec, Matthew C. Donald, David E. Stec

Pharmacology and Nutritional Sciences Faculty Publications

The inverse relationship of plasma bilirubin levels with liver fat accumulation has prompted the possibility of bilirubin as a therapeutic for non-alcoholic fatty liver disease. Here, we used diet-induced obese mice with non-alcoholic fatty liver disease treated with pegylated bilirubin (bilirubin nanoparticles) or vehicle control to determine the impact on hepatic lipid accumulation. The bilirubin nanoparticles significantly reduced hepatic fat, triglyceride accumulation, de novo lipogenesis, and serum levels of liver dysfunction marker aspartate transaminase and ApoB100 containing very-low-density lipoprotein. The bilirubin nanoparticles improved liver function and activated the hepatic β-oxidation pathway by increasing PPARα and acyl-coenzyme A oxidase 1. …


The Role Of Haptic Expectations In Reaching To Grasp: From Pantomime To Natural Grasps And Back Again, Robert L. Whitwell, Nathan J. Katz, Melvyn A. Goodale, James T. Enns Dec 2020

The Role Of Haptic Expectations In Reaching To Grasp: From Pantomime To Natural Grasps And Back Again, Robert L. Whitwell, Nathan J. Katz, Melvyn A. Goodale, James T. Enns

Brain and Mind Institute Researchers' Publications

© Copyright © 2020 Whitwell, Katz, Goodale and Enns. When we reach to pick up an object, our actions are effortlessly informed by the object’s spatial information, the position of our limbs, stored knowledge of the object’s material properties, and what we want to do with the object. A substantial body of evidence suggests that grasps are under the control of “automatic, unconscious” sensorimotor modules housed in the “dorsal stream” of the posterior parietal cortex. Visual online feedback has a strong effect on the hand’s in-flight grasp aperture. Previous work of ours exploited this effect to show that grasps are …


The Cardiac Neural Crest Cells In Heart Development And Congenital Heart Defects, Eileen M Burd, Ahmed Babiker, Jessica K Fairley, Divya Bhamidipati, Laila E Woc-Colburn, Blaine A Mathison Dec 2020

The Cardiac Neural Crest Cells In Heart Development And Congenital Heart Defects, Eileen M Burd, Ahmed Babiker, Jessica K Fairley, Divya Bhamidipati, Laila E Woc-Colburn, Blaine A Mathison

Faculty, Staff and Student Publications

No abstract provided.


Correction: Moxley, R.A., Et Al. Intimate Attachment Of Escherichia Coli O157:H7 To Urinary Bladder Epithelium In The Gnotobiotic Piglet Model. Microorganisms 2020, 8, 263, Rodney A. Moxley, Tom W. Bargar, Stephen D. Kachman, Diane R. Baker, David Francis Dec 2020

Correction: Moxley, R.A., Et Al. Intimate Attachment Of Escherichia Coli O157:H7 To Urinary Bladder Epithelium In The Gnotobiotic Piglet Model. Microorganisms 2020, 8, 263, Rodney A. Moxley, Tom W. Bargar, Stephen D. Kachman, Diane R. Baker, David Francis

School of Veterinary and Biomedical Sciences: Faculty Publications

The authors wish to make the following corrections to this paper [1]: On page 2, the sentence that reads, “Hence, EHEC is a rare but established cause of HUS in children and adults.” should read, “Hence, EHEC is a rare but established cause of UTI-associated HUS in children and adults.” On page 4, the sentence that reads, “As noted previously, 14 of 126 (13.3%) piglets orally inoculated with EHEC O157:H7 strains developed mild to moderate purulent cystitis within 8 d PI [25] (Table 1).” should read, “As noted previously, 14 of 105 (13.3%) piglets orally inoculated with EHEC O157:H7 strains …


Case – 18F-Dcfpyl-Positron Emission Tomography/Computed Tomography (Pet/Ct) Time Of Imaging, Golmehr Sistani, Ur Metser, Glenn S. Bauman, David T. Laidley, Stephen E. Pautler, Katherine A. Zukotynski Dec 2020

Case – 18F-Dcfpyl-Positron Emission Tomography/Computed Tomography (Pet/Ct) Time Of Imaging, Golmehr Sistani, Ur Metser, Glenn S. Bauman, David T. Laidley, Stephen E. Pautler, Katherine A. Zukotynski

Medical Biophysics Publications

No abstract provided.


Cortical Thickness Estimation In Individuals With Cerebral Small Vessel Disease, Focal Atrophy, And Chronic Stroke Lesions, Miracle Ozzoude, Joel Ramirez, Pradeep Reddy Raamana, Melissa F. Holmes, Kirstin Walker, Christopher J.M. Scott, Fuqiang Gao, Maged Goubran, Donna Kwan, Maria C. Tartaglia, Derek Beaton, Gustavo Saposnik, Ayman Hassan, Jane Lawrence-Dewar, Dariush Dowlatshahi, Stephen C. Strother, Sean Symons, Robert Bartha, Richard H. Swartz, Sandra E. Black Dec 2020

Cortical Thickness Estimation In Individuals With Cerebral Small Vessel Disease, Focal Atrophy, And Chronic Stroke Lesions, Miracle Ozzoude, Joel Ramirez, Pradeep Reddy Raamana, Melissa F. Holmes, Kirstin Walker, Christopher J.M. Scott, Fuqiang Gao, Maged Goubran, Donna Kwan, Maria C. Tartaglia, Derek Beaton, Gustavo Saposnik, Ayman Hassan, Jane Lawrence-Dewar, Dariush Dowlatshahi, Stephen C. Strother, Sean Symons, Robert Bartha, Richard H. Swartz, Sandra E. Black

Medical Biophysics Publications

Background: Regional changes to cortical thickness in individuals with neurodegenerative and cerebrovascular diseases (CVD) can be estimated using specialized neuroimaging software. However, the presence of cerebral small vessel disease, focal atrophy, and cortico-subcortical stroke lesions, pose significant challenges that increase the likelihood of misclassification errors and segmentation failures. Purpose: The main goal of this study was to examine a correction procedure developed for enhancing FreeSurfer’s (FS’s) cortical thickness estimation tool, particularly when applied to the most challenging MRI obtained from participants with chronic stroke and CVD, with varying degrees of neurovascular lesions and brain atrophy. Methods: In 155 CVD participants …


Natural Product Heme Oxygenase Inducers As Treatment For Nonalcoholic Fatty Liver Disease, David E. Stec, Terry D. Hinds Jr. Dec 2020

Natural Product Heme Oxygenase Inducers As Treatment For Nonalcoholic Fatty Liver Disease, David E. Stec, Terry D. Hinds Jr.

Pharmacology and Nutritional Sciences Faculty Publications

Heme oxygenase (HO) is a critical component of the defense mechanism to a wide variety of cellular stressors. HO induction affords cellular protection through the breakdown of toxic heme into metabolites, helping preserve cellular integrity. Nonalcoholic fatty liver disease (NAFLD) is a pathological condition by which the liver accumulates fat. The incidence of NAFLD has reached all-time high levels driven primarily by the obesity epidemic. NALFD can progress to nonalcoholic steatohepatitis (NASH), advancing further to liver cirrhosis or cancer. NAFLD is also a contributing factor to cardiovascular and metabolic diseases. There are currently no drugs to specifically treat NAFLD, with …


Honey Vs. Silver Sulfadiazine In The Reepithelialization Of Partial-Thickness Burn Wounds, Andi Diamond, Monica Bowler Dec 2020

Honey Vs. Silver Sulfadiazine In The Reepithelialization Of Partial-Thickness Burn Wounds, Andi Diamond, Monica Bowler

Physician Assistant Capstones, 2020-current

Objective: To determine whether silver sulfadiazine (SSD) should remain the gold standard of initial burn wound treatment or if it should be replaced with an alternative treatment that allows for faster skin cell regrowth. Methods: Database search of PubMed and Google Scholar were used to evaluate patient clinical trials with the search terms “burn”, “honey”, and “silver”. Results: Three trials met inclusion criteria. All three of the studies found significant improvement in their primary endpoint with the use of honey. The first study showed the honey group to have healing time of 13.47 ± 4.06 days and …


Large-Scale Characterization Of Drug Responses Of Clinically Relevant Proteins In Cancer Cell Lines, Wei Zhao, Jun Li, Mei-Ju M Chen, Yikai Luo, Zhenlin Ju, Nicole K Nesser, Katie Johnson-Camacho, Christopher T Boniface, Yancey Lawrence, Nupur T Pande, Michael A Davies, Meenhard Herlyn, Taru Muranen, Ioannis K Zervantonakis, Erika Von Euw, Andre Schultz, Shwetha V Kumar, Anil Korkut, Paul T Spellman, Rehan Akbani, Dennis J Slamon, Joe W Gray, Joan S Brugge, Yiling Lu, Gordon B Mills, Han Liang Dec 2020

Large-Scale Characterization Of Drug Responses Of Clinically Relevant Proteins In Cancer Cell Lines, Wei Zhao, Jun Li, Mei-Ju M Chen, Yikai Luo, Zhenlin Ju, Nicole K Nesser, Katie Johnson-Camacho, Christopher T Boniface, Yancey Lawrence, Nupur T Pande, Michael A Davies, Meenhard Herlyn, Taru Muranen, Ioannis K Zervantonakis, Erika Von Euw, Andre Schultz, Shwetha V Kumar, Anil Korkut, Paul T Spellman, Rehan Akbani, Dennis J Slamon, Joe W Gray, Joan S Brugge, Yiling Lu, Gordon B Mills, Han Liang

Faculty, Staff and Students Publications

Perturbation biology is a powerful approach to modeling quantitative cellular behaviors and understanding detailed disease mechanisms. However, large-scale protein response resources of cancer cell lines to perturbations are not available, resulting in a critical knowledge gap. Here we generated and compiled perturbed expression profiles of ∼210 clinically relevant proteins in >12,000 cancer cell line samples in response to ∼170 drug compounds using reverse-phase protein arrays. We show that integrating perturbed protein response signals provides mechanistic insights into drug resistance, increases the predictive power for drug sensitivity, and helps identify effective drug combinations. We build a systematic map of "protein-drug" connectivity …


Week Of December 14, 2020, New York Medical College Dec 2020

Adult Hippocampal Neurogenesis As A Potential Therapeutic Target In Fetal Alcohol Spectrum Disorders, Kymberly Cheyanne Gustus Dec 2020

Adult Hippocampal Neurogenesis As A Potential Therapeutic Target In Fetal Alcohol Spectrum Disorders, Kymberly Cheyanne Gustus

Biomedical Sciences ETDs

This dissertation aims to determine if adult hippocampal neurogenesis is a potential therapeutic target in Fetal Alcohol Spectrum Disorders (FASDs). Adult hippocampal neurogenesis plays important and unique roles in certain aspects of learning, memory, and mood (Anacker & Hen, 2017). Individuals with FASDs often demonstrate dysregulation in these arenas (Lewis et al., 2015; Temple, Cook, Unsworth, Rajani, & Mela, 2019). Previous work in our lab using a mouse model of prenatal alcohol exposure demonstrated impairment in enrichment-mediated adult hippocampal neurogenesis (Irene Y. Choi, Andrea M. Allan, & Lee Anna Cunningham, 2005; K. Kajimoto, A. Allan, & L. A. Cunningham, 2013). …


Role Of The Acid Sensing Ion Channel 1a In The Systemic Circulation, Selina M. Garcia Dec 2020

Role Of The Acid Sensing Ion Channel 1a In The Systemic Circulation, Selina M. Garcia

Biomedical Sciences ETDs

Acid-sensing ion channel 1a (ASIC1a) is a non-selective cation channel that is expressed in vascular smooth muscle cells. However, little is known about the contribution of ASIC1a to vascular reactivity and cardiovascular homeostasis. We have previously shown that ASIC1a contributes to pulmonary vascular smooth muscle cell (VSMC) Ca2+ entry and vasoconstriction as well as chronic hypoxia-induced pulmonary hypertension. However, a role of ASIC1a in the systemic circulation is unclear. Previous reports have shown that ASIC1a is expressed in femoral and cerebral arteries, however, these studies suggest that ASIC1a contributes to vascular reactivity through neuronal regulation rather than vascular. Therefore, …


The Role Of Anti-Inflammatory Cytokine Interleukin-10 (Il-10) In Tauopathies, Lea L. Weston Dec 2020

The Role Of Anti-Inflammatory Cytokine Interleukin-10 (Il-10) In Tauopathies, Lea L. Weston

Biomedical Sciences ETDs

Tauopathies are neurodegenerative diseases, including Alzheimer’s disease, that are associated with pathological accumulation of the microtubule associated protein tau (MAPT, or tau) (Lee et al., 2001). Abnormal hyperphosphorylated tau (pTau) strongly correlate with cognitive impairment (Nelson et al., 2012). Neuroinflammation is also associated with tauopathies (Gerhard et al., 2006b; Edison et al., 2008) and is implicated in driving tau pathology (Yoshiyama et al., 2007, Maphis et al., 2015b). Therefore, it is compelling to understand the role of anti-inflammatory cytokines in limiting neuroinflammation and tau pathology. Interleukin-10 (IL-10) is a well-established anti-inflammatory cytokine with roles in limiting inflammation in the central …


Trypanosoma Cruzi Modulates Piwi-Interacting Rna Expression In Primary Human Cardiac Myocytes During The Early Phase Of Infection, Kayla J. Rayford, Ayorinde Cooley, Ashutosh Arun, Girish Rachakonda, Yulia Kleschenko, Fernando Villalta, Siddharth Pratap, Maria F. Lima, Pius N. Nde Dec 2020

Trypanosoma Cruzi Modulates Piwi-Interacting Rna Expression In Primary Human Cardiac Myocytes During The Early Phase Of Infection, Kayla J. Rayford, Ayorinde Cooley, Ashutosh Arun, Girish Rachakonda, Yulia Kleschenko, Fernando Villalta, Siddharth Pratap, Maria F. Lima, Pius N. Nde

Publications and Research

Trypanosoma cruzi dysregulates the gene expression profile of primary human cardiomyocytes (PHCM) during the early phase of infection through a mechanism which remains to be elucidated. The role that small non-coding RNAs (sncRNA) including PIWI-interacting RNA (piRNA) play in regulating gene expression during the early phase of infection is unknown. To understand how T. cruzi dysregulate gene expression in the heart, we challenged PHCM with T. cruzi trypomastigotes and analyzed sncRNA, especially piRNA, by RNA-sequencing. The parasite induced significant differential expression of host piRNAs, which can target and regulate the genes which are important during the early infection phase. An …


Pathway‐Extended Gene Expression Signatures Integrate Novel Biomarkers That Improve Predictions Of Patient Responses To Kinase Inhibitors, Ashis Bagchee‐Clark, Eliseos J. Mucaki, Tyson Whitehead, Peter Rogan Dec 2020

Pathway‐Extended Gene Expression Signatures Integrate Novel Biomarkers That Improve Predictions Of Patient Responses To Kinase Inhibitors, Ashis Bagchee‐Clark, Eliseos J. Mucaki, Tyson Whitehead, Peter Rogan

Biochemistry Publications

Cancer chemotherapy responses have been related to multiple pharmacogenetic biomarkers, often for the same drug. This study utilizes machine learning to derive multi‐gene expression signatures that predict individual patient responses to specific tyrosine kinase inhibitors, including erlotinib, gefitinib, sorafenib, sunitinib, lapatinib and imatinib. Support vector machine (SVM) learning was used to train mathematical models that distinguished sensitivity from resistance to these drugs using a novel systems biology‐based approach. This began with expression of genes previously implicated in specific drug responses, then expanded to evaluate genes whose products were related through biochemical pathways and interactions. Optimal pathway‐extended SVMs predicted responses in …


The Poststroke Peripheral Immune Response Is Differentially Regulated By Leukemia Inhibitory Factor In Aged Male And Female Rodents, Stephanie M. Davis, Lisa A. Collier, Sarah J. Messmer, Keith R. Pennypacker Dec 2020

The Poststroke Peripheral Immune Response Is Differentially Regulated By Leukemia Inhibitory Factor In Aged Male And Female Rodents, Stephanie M. Davis, Lisa A. Collier, Sarah J. Messmer, Keith R. Pennypacker

Neurology Faculty Publications

Background. The goal of this study was to determine whether leukemia inhibitory factor (LIF) promotes anti-inflammatory activity after stroke in a sex-dependent manner. Methods. Aged (18-month-old) Sprague-Dawley rats of both sexes underwent sham surgery or permanent middle cerebral artery occlusion (MCAO). Animals received three doses of intravenous LIF (125 μg/kg) or PBS at 6, 24, and 48 h before euthanization at 72 h. Spleen weights were measured immediately following euthanization. Western blot was used to measure protein levels of CCL8, CD11b, CXCL9, CXCL10, IL-12 p40, IL-3, and the LIF receptor (LIFR) in spleen tissue. ELISA was used …


Purification And Use Of Trna For Enzymatic Post-Translational Addition Of Amino Acids To Proteins., Irem Avcilar-Kucukgoze, Howard Gamper, Ya-Ming Hou, Anna Kashina Dec 2020

Purification And Use Of Trna For Enzymatic Post-Translational Addition Of Amino Acids To Proteins., Irem Avcilar-Kucukgoze, Howard Gamper, Ya-Ming Hou, Anna Kashina

Department of Biochemistry and Molecular Biology Faculty Papers

Post-translational addition of amino acids to proteins by enzymes using aminoacyl-tRNA is an emerging regulatory mechanism. Examples include Arg transfer in eukaryotes, Leu/Phe transfer in bacteria, and tRNA-synthetase-mediated addition of amino acids to Lys side chains. Here, we present a method of purification and use of tRNA for such reactions, focusing on tRNAArg and its use for arginylation. This method can also be used for other tRNA-mediated reactions. For complete details on the use and execution of this protocol, please refer to Avcilar-Kucukgoze et al. (2020).


Oral Gavage Delivery Of Stable Isotope Tracer For In Vivo Metabolomics, Holden C. Williams, Margaret A. Piron, Grant K. Nation, Adeline E. Walsh, Lyndsay E. A. Young, Ramon C. Sun, Lance A. Johnson Dec 2020

Oral Gavage Delivery Of Stable Isotope Tracer For In Vivo Metabolomics, Holden C. Williams, Margaret A. Piron, Grant K. Nation, Adeline E. Walsh, Lyndsay E. A. Young, Ramon C. Sun, Lance A. Johnson

Sanders-Brown Center on Aging Faculty Publications

Stable isotope-resolved metabolomics (SIRM) is a powerful tool for understanding disease. Advances in SIRM techniques have improved isotopic delivery and expanded the workflow from exclusively in vitro applications to in vivo methodologies to study systemic metabolism. Here, we report a simple, minimally-invasive and cost-effective method of tracer delivery to study SIRM in vivo in laboratory mice. Following a brief fasting period, we orally administered a solution of [U-13C] glucose through a blunt gavage needle without anesthesia, at a physiological dose commonly used for glucose tolerance tests (2 g/kg bodyweight). We defined isotopic enrichment in plasma and tissue at …


The Aboriginal Gap In Online Active Vaccine Safety Surveillance, Patrick Cashman, Sally-Anne Munnoch, Katrina Clark, Natalie Allan, Stephen Clarke, Kristine Macartney, David Durrheim Dec 2020

The Aboriginal Gap In Online Active Vaccine Safety Surveillance, Patrick Cashman, Sally-Anne Munnoch, Katrina Clark, Natalie Allan, Stephen Clarke, Kristine Macartney, David Durrheim

Australian Indigenous HealthBulletin

Objectives: To investigate if Aboriginal people are equally included in new forms of vaccine safety post-marketing surveillance that support safety signal detection and confidence in the vaccine program by comparing the use of Vaxtracker active adverse events following immunisation (AEFI) surveillance between Aboriginal and non-Aboriginal parents of vaccinated children.

Methods: In 2016, automated AEFI surveillance was conducted to monitor seasonal influenza vaccine in children aged 18 months to less than 5 years and for DTPa vaccine after the inclusion of a new dose at 18 months of age. To explore reasons for non-response, Aboriginal Immunisation Officers contacted the …


Electrophysiological And Imaging Calcium Biomarkers Of Aging In Male And Female 5×Fad Mice, Adam O. Ghoweri, Lara Ouillette, Hilaree N. Frazier, Katie L. Anderson, Ruei-Lung Lin, John C. Gant, Rachel Parent, Shannon Moore, Geoffrey G. Murphy, Olivier Thibault Dec 2020

Electrophysiological And Imaging Calcium Biomarkers Of Aging In Male And Female 5×Fad Mice, Adam O. Ghoweri, Lara Ouillette, Hilaree N. Frazier, Katie L. Anderson, Ruei-Lung Lin, John C. Gant, Rachel Parent, Shannon Moore, Geoffrey G. Murphy, Olivier Thibault

Pharmacology and Nutritional Sciences Faculty Publications

BACKGROUND: In animal models and tissue preparations, calcium dyshomeostasis is a biomarker of aging and Alzheimer's disease that is associated with synaptic dysfunction, neuritic pruning, and dysregulated cellular processes. It is unclear, however, whether the onset of calcium dysregulation precedes, is concurrent with, or is the product of pathological cellular events (e.g., oxidation, amyloid-β production, and neuroinflammation). Further, neuronal calcium dysregulation is not always present in animal models of amyloidogenesis, questioning its reliability as a disease biomarker.

OBJECTIVE: Here, we directly tested for the presence of calcium dysregulation in dorsal hippocampal neurons in male and female 5×FAD mice on …


A Steroid Receptor Coactivator Stimulator (Mcb-613) Attenuates Adverse Remodeling After Myocardial Infarction, Lisa K Mullany, Aarti D Rohira, John P Leach, Jong H Kim, Tanner O Monroe, Andrea R Ortiz, Brittany Stork, M Waleed Gaber, Poonam Sarkar, Andrew G Sikora, Todd K Rosengart, Brian York, Yongcheng Song, Clifford C Dacso, David M Lonard, James F Martin, Bert W O'Malley Dec 2020

A Steroid Receptor Coactivator Stimulator (Mcb-613) Attenuates Adverse Remodeling After Myocardial Infarction, Lisa K Mullany, Aarti D Rohira, John P Leach, Jong H Kim, Tanner O Monroe, Andrea R Ortiz, Brittany Stork, M Waleed Gaber, Poonam Sarkar, Andrew G Sikora, Todd K Rosengart, Brian York, Yongcheng Song, Clifford C Dacso, David M Lonard, James F Martin, Bert W O'Malley

Faculty, Staff and Students Publications

Progressive remodeling of the heart, resulting in cardiomyocyte (CM) loss and increased inflammation, fibrosis, and a progressive decrease in cardiac function, are hallmarks of myocardial infarction (MI)-induced heart failure. We show that MCB-613, a potent small molecule stimulator of steroid receptor coactivators (SRCs) attenuates pathological remodeling post-MI. MCB-613 decreases infarct size, apoptosis, hypertrophy, and fibrosis while maintaining significant cardiac function. MCB-613, when given within hours post MI, induces lasting protection from adverse remodeling concomitant with: 1) inhibition of macrophage inflammatory signaling and interleukin 1 (IL-1) signaling, which attenuates the acute inflammatory response, 2) attenuation of fibroblast differentiation, and 3) promotion …


Week Of December 7, 2020, New York Medical College Dec 2020

Pandemic Vibrio Cholerae Shuts Down Site-Specific Recombination To Retain An Interbacterial Defence Mechanism, Francis J. Santoriello, Lina Michel, Daniel Unterweger, Stefan Pukatzki Dec 2020

Pandemic Vibrio Cholerae Shuts Down Site-Specific Recombination To Retain An Interbacterial Defence Mechanism, Francis J. Santoriello, Lina Michel, Daniel Unterweger, Stefan Pukatzki

Publications and Research

Vibrio cholerae is an aquatic microbe that can be divided into three subtypes: harmless environmental strains, localised pathogenic strains, and pandemic strains causing global cholera outbreaks. Each type has a contact-dependent type VI secretion system (T6SS) that kills neighbouring competitors by translocating unique toxic effector proteins. Pandemic isolates possess identical effectors, indicating that T6SS effectors may affect pandemicity. Here, we show that one of the T6SS gene clusters (Aux3) exists in two states: a mobile, prophage-like element in a small subset of environmental strains, and a truncated Aux3 unique to and conserved in pandemic isolates. Environmental Aux3 can be readily …


The Acute Effects Of 5 Fluorouracil On Skeletal Muscle Resident And Infiltrating Immune Cells In Mice, Brandon N. Vanderveen, Alexander T. Sougiannis, Kandy T. Velazquez, James A. Carson, Daping Fan, E. Angela Murphy Dec 2020

The Acute Effects Of 5 Fluorouracil On Skeletal Muscle Resident And Infiltrating Immune Cells In Mice, Brandon N. Vanderveen, Alexander T. Sougiannis, Kandy T. Velazquez, James A. Carson, Daping Fan, E. Angela Murphy

Faculty Publications

5 fluorouracil (5FU) has been a first-choice chemotherapy drug for several cancer types (e.g., colon, breast, head, and neck); however, its efficacy is diminished by patient acquired resistance and pervasive side effects. Leukopenia is a hallmark of 5FU; however, the impact of 5FU-induced leukopenia on healthy tissue is only becoming unearthed. Recently, skeletal muscle has been shown to be impacted by 5FU in clinical and preclinical settings and weakness and fatigue remain among the most consistent complaints in cancer patients undergoing chemotherapy. Monocytes, or more specifically macrophages, are the predominate immune cell in skeletal muscle which regulate turnover and homeostasis …


Impact Of Endangered Animal Protection Rights, Policies, And Practices On Zoonotic Disease Spread, Daniella Fedak-Lengel Dec 2020

Impact Of Endangered Animal Protection Rights, Policies, And Practices On Zoonotic Disease Spread, Daniella Fedak-Lengel

Honors Projects

Building on field research in Costa Rica and Belize, this honors project analyzes environmental and endangered animal protection policies, rights, and practices in Central America and the Caribbean, and assesses the impact of veterinary science and biological research and practice, particularly conservation biology, on animal welfare concerns. Informed by the recent surge in awareness regarding zoonoses and zoonotic disease transmission, prevention and control, resulting from the current global pandemic of SARS-CoV-2, the project assesses the need for new and innovative types of collaboration, particularly involving conservation biologists, environmental scientists, public health experts, law and policy makers, and global trade and …


Manf Is Neuroprotective Against Ethanol-Induced Neurodegeneration Through Ameliorating Er Stress, Yongchao Wang, Wen Wen, Hui Li, Marco Clementino, Hong Xu, Mei Xu, Murong Ma, Jacqueline A. Frank, Jia Luo Dec 2020

Manf Is Neuroprotective Against Ethanol-Induced Neurodegeneration Through Ameliorating Er Stress, Yongchao Wang, Wen Wen, Hui Li, Marco Clementino, Hong Xu, Mei Xu, Murong Ma, Jacqueline A. Frank, Jia Luo

Pharmacology and Nutritional Sciences Faculty Publications

Fetal alcohol spectrum disorders (FASD) are a spectrum of developmental disorders caused by prenatal alcohol exposure. Neuronal loss or neurodegeneration in the central nervous system (CNS) is one of the most devastating features in FASD. It is imperative to delineate the underlying mechanisms to facilitate the treatment of FASD. Endoplasmic reticulum (ER) stress is a hallmark and an underlying mechanism of many neurodegenerative diseases, including ethanol-induced neurodegeneration. Mesencephalic astrocyte-derived neurotrophic factor (MANF) responds to ER stress and has been identified as a protein upregulated in response to ethanol exposure during the brain development. To investigate the role of MANF in …


Genetic And Epigenetic Determinants Of Diffuse Large B-Cell Lymphoma, Tanner Bakhshi, Philippe T. Georgel Dec 2020

Genetic And Epigenetic Determinants Of Diffuse Large B-Cell Lymphoma, Tanner Bakhshi, Philippe T. Georgel

Biomedical Sciences

Diffuse large B-cell lymphoma (DLBCL) is the most common type of lymphoma and is notorious for its heterogeneity, aggressive nature, and the frequent development of resistance and/or relapse after treatment with standard chemotherapy. To address these problems, a strong emphasis has been placed on researching the molecular origins and mechanisms of DLBCL to develop effective treatments. One of the major insights produced by such research is that DLBCL almost always stems from genetic damage that occurs during the germinal center (GC) reaction, which is required for the production of high-affinity antibodies. Indeed, there is significant overlap between the mechanisms that …


Causes Of Color Blindness: Function And Failure Of The Genes That Detect Color, Dylan Taylor Dec 2020

Causes Of Color Blindness: Function And Failure Of The Genes That Detect Color, Dylan Taylor

Senior Honors Theses

Color blindness affects nearly 10% of the entire population, with multiple types of color blindness from various genetic mutations. In the following sections, the nature of light and how the human eye perceives light will be discussed. Afterward, the major forms of color blindness and their genetic causes will be considered. Once these genetic causes have been established, the current method for diagnosing color blindness will be investigated, followed by a discussion of the current treatments available to those with color blindness. Finally, a brief discussion will address possible future work for color blindness with the hope of finding better …


Focal Cortical Dysplasia With Prolonged Ictal Asystole, A Case Report, Ahmad Wali, Fowzia Siddiqui Dec 2020

Focal Cortical Dysplasia With Prolonged Ictal Asystole, A Case Report, Ahmad Wali, Fowzia Siddiqui

Section of Neurology

Introduction: Cortical dysplasia carries significant morbidities such as seizures and delayed milestones. Focal cortical dysplasia (FCD) causes refractory epilepsy with various seizure types depending on the location and extent of the dysplasia. FCD in the temporal region and the insular cortex may cause ictal bradycardia (IB) and ictal asystole (IA). Video EEG (VEEG) with simultaneous EKG recording can better diagnose these cardiac abnormalities in FCD. We describe a case of refractory epilepsy. The patient's clinical seizures were usually followed by syncope. VEEG revealed frequent seizures some of which were associated with prolonged ictal asystole.
Results: A 15 years old female …