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Induction Of Mir-155 After Brain Injury Promotes Type 1 Interferon And Has A Neuroprotective Effect., Emily Harrison, Kathleen M. Emanuel, Benjamin G. Lamberty, Brenda M. Morsey, Min Li, Matthew L. Kelso, Sowmya V. Yelamanchili, Howard S. Fox Jul 2017

Induction Of Mir-155 After Brain Injury Promotes Type 1 Interferon And Has A Neuroprotective Effect., Emily Harrison, Kathleen M. Emanuel, Benjamin G. Lamberty, Brenda M. Morsey, Min Li, Matthew L. Kelso, Sowmya V. Yelamanchili, Howard S. Fox

Journal Articles: Pharmacology & Experimental Neuroscience

Traumatic brain injury (TBI) produces profound and lasting neuroinflammation that has both beneficial and detrimental effects. Recent evidence has implicated microRNAs (miRNAs) in the regulation of inflammation both in the periphery and the CNS. We examined the expression of inflammation associated miRNAs in the context of TBI using a mouse controlled cortical impact (CCI) model and found increased levels of miR-21, miR-223 and miR-155 in the hippocampus after CCI. The expression of miR-155 was elevated 9-fold after CCI, an increase confirmed by in situ hybridization (ISH). Interestingly, expression of miR-155 was largely found in neuronal nuclei as evidenced by co-localization …


Impact Of Aspirin And Clopidogrel Hyporesponsiveness In Patients Treated With Drug-Eluting Stents: 2-Year Results Of A Prospective, Multicenter Registry Study., Thomas D. Stuckey Md, Ajay J. Kirtane Md, Bruce R. Brodie Md, Bernhard Witzenbichler Md, Claire Litherland Ms, Giora Weisz Md, Michael J. Rinaldi Md, Franz-Josef Neumann Md, D Christopher Metzger Md, Timothy D. Henry Md, David A. Cox Md, Peter L. Duffy Md, Ernest L. Mazzaferri Md, Paul A. Gurbel Md, Roxana Mehran Md, Philippe Généreux Md, Ori Ben-Yehuda Md, Charles A. Simonton Md, Gregg W. Stone Md Jul 2017

Impact Of Aspirin And Clopidogrel Hyporesponsiveness In Patients Treated With Drug-Eluting Stents: 2-Year Results Of A Prospective, Multicenter Registry Study., Thomas D. Stuckey Md, Ajay J. Kirtane Md, Bruce R. Brodie Md, Bernhard Witzenbichler Md, Claire Litherland Ms, Giora Weisz Md, Michael J. Rinaldi Md, Franz-Josef Neumann Md, D Christopher Metzger Md, Timothy D. Henry Md, David A. Cox Md, Peter L. Duffy Md, Ernest L. Mazzaferri Md, Paul A. Gurbel Md, Roxana Mehran Md, Philippe Généreux Md, Ori Ben-Yehuda Md, Charles A. Simonton Md, Gregg W. Stone Md

Department of Medicine

OBJECTIVES: In this analysis of 2-year outcomes in the ADAPT-DES (Assessment of Dual AntiPlatelet Therapy with Drug-Eluting Stents) study, the authors sought to examine the independent associations between platelet reactivity to both aspirin and clopidogrel and subsequent outcomes.

BACKGROUND: The relationship between platelet reactivity and long-term adverse events following implantation of drug-eluting stents (DES) has been incompletely characterized.

METHODS: The ADAPT-DES study was a multicenter registry of patients undergoing routine platelet function testing following percutaneous coronary intervention with DES. The primary study endpoint was definite or probable stent thrombosis (ST); other endpoints were all-cause mortality, myocardial infarction, and clinically relevant …


Optimizing Heart Failure Outcomes Through Diet: A Review, Farley B. Neasman Iii Jul 2017

Optimizing Heart Failure Outcomes Through Diet: A Review, Farley B. Neasman Iii

Marshall Journal of Medicine

Heart failure is a growing epidemic that will add significant monetary and human costs to an already overtaxed health-care system. Though promising new medications have recently been approved, this complex condition is largely preventable through aggressive risk factor modification, with diet being shown to have a greater effect than exercise. An underrated component of a healthy diet is the simple addition of nuts – the anti-inflammatory fatty acids, healthy proteins, and general availability have been shown to improve survival and reduce the primary risk factors contributing to heart failure, making the addition of nuts and legumes to the diet an …


Week Of July 24, 2017, New York Medical College Jul 2017

A Comparative Analysis Of Translesion Dna Synthesis Catalyzed By A High-Fidelity Dna Polymerase, Anvesh Dasari, Tejal Deodhar, Anthony J. Berdis Jul 2017

A Comparative Analysis Of Translesion Dna Synthesis Catalyzed By A High-Fidelity Dna Polymerase, Anvesh Dasari, Tejal Deodhar, Anthony J. Berdis

Chemistry Faculty Publications

Translesion DNA synthesis (TLS) is the ability of DNA polymerases to incorporate nucleotides opposite and beyond damaged DNA. TLS activity is an important risk factor for the initiation and progression of genetic diseases such as cancer. In this study, we evaluate the ability of a high-fidelity DNA polymerase to perform TLS with 8-oxo-guanine (8-oxo-G), a highly pro-mutagenic DNA lesion formed by reactive oxygen species. Results of kinetic studies monitoring the incorporation of modified nucleotide analogs demonstrate that the binding affinity of the incoming dNTP is controlled by the overall hydrophobicity of the nucleobase. However, the rate constant for the …


A Population-Specific Reference Panel Empowers Genetic Studies Of Anabaptist Populations., Liping Hou, Rachel L Kember, Jared C Roach, Jeffrey R O'Connell, David W Craig, Maja Bucan, William K Scott, Margaret Pericak-Vance, Jonathan L Haines, Michael H Crawford, Alan R Shuldiner, Francis J Mcmahon Jul 2017

A Population-Specific Reference Panel Empowers Genetic Studies Of Anabaptist Populations., Liping Hou, Rachel L Kember, Jared C Roach, Jeffrey R O'Connell, David W Craig, Maja Bucan, William K Scott, Margaret Pericak-Vance, Jonathan L Haines, Michael H Crawford, Alan R Shuldiner, Francis J Mcmahon

Articles, Abstracts, and Reports

Genotype imputation is a powerful strategy for achieving the large sample sizes required for identification of variants underlying complex phenotypes, but imputation of rare variants remains problematic. Genetically isolated populations offer one solution, however population-specific reference panels are needed to assure optimal imputation accuracy and allele frequency estimation. Here we report the Anabaptist Genome Reference Panel (AGRP), the first whole-genome catalogue of variants and phased haplotypes in people of Amish and Mennonite ancestry. Based on high-depth whole-genome sequence (WGS) from 265 individuals, the AGRP contains >12 M high-confidence single nucleotide variants and short indels, of which ~12.5% are novel. These …


Mdm2 Is Required For Survival And Growth Of P53-Deficient Cancer Cells., Kyle P Feeley, Clare M. Adams, Ramkrishna Mitra, Christine M. Eischen Jul 2017

Mdm2 Is Required For Survival And Growth Of P53-Deficient Cancer Cells., Kyle P Feeley, Clare M. Adams, Ramkrishna Mitra, Christine M. Eischen

Department of Cancer Biology Faculty Papers

p53 deletion prevents the embryonic lethality of normal tissues lacking Mdm2, suggesting that cells can survive without Mdm2 if p53 is also absent. Here we report evidence challenging this view, with implications for therapeutically targeting Mdm2. Deletion of Mdm2 in T-cell lymphomas or sarcomas lacking p53 induced apoptosis and G2 cell-cycle arrest, prolonging survival of mice with these tumors. p53-/- fibroblasts showed similar results, indicating that the effects of Mdm2 loss extend to pre-malignant cells. Mdm2 deletion in p53-/- cells upregulated p53 transcriptional target genes that induce apoptosis and cell-cycle arrest. Mdm2 deletion also increased levels of …


Peripheral Inflammation, Apolipoprotein E4, And Amyloid-Β Interact To Induce Cognitive And Cerebrovascular Dysfunction, Felecia M. Marottoli, Yuriko Katsumata, Kevin P. Koster, Riya Thomas, David W. Fardo, Leon M. Tai Jul 2017

Peripheral Inflammation, Apolipoprotein E4, And Amyloid-Β Interact To Induce Cognitive And Cerebrovascular Dysfunction, Felecia M. Marottoli, Yuriko Katsumata, Kevin P. Koster, Riya Thomas, David W. Fardo, Leon M. Tai

Biostatistics Faculty Publications

Cerebrovascular dysfunction is rapidly reemerging as a major process of Alzheimer’s disease (AD). It is, therefore, crucial to delineate the roles of AD risk factors in cerebrovascular dysfunction. While apolipoprotein E4 (APOE4), Amyloid-β (Aβ), and peripheral inflammation independently induce cerebrovascular damage, their collective effects remain to be elucidated. The goal of this study was to determine the interactive effect of APOE4, Aβ, and chronic repeated peripheral inflammation on cerebrovascular and cognitive dysfunction in vivo. EFAD mice are a well-characterized mouse model that express human APOE3 (E3FAD) or APOE4 (E4FAD) and overproduce human Aβ42 via expression of …


Δfosb Regulates Gene Expression And Cognitive Dysfunction In A Mouse Model Of Alzheimer's Disease., Brian F Corbett, Jason C You, Xiaohong Zhang, Mark S Pyfer, Umberto Tosi, Daniel M Iascone, Iraklis Petrof, Anupam Hazra, Chia-Hsuan Fu, Gabriel S Stephens, Annie Ashok, Suzan Aschmies, Lijuan Zhao, Eric J Nestler, Jeannie Chin Jul 2017

Δfosb Regulates Gene Expression And Cognitive Dysfunction In A Mouse Model Of Alzheimer's Disease., Brian F Corbett, Jason C You, Xiaohong Zhang, Mark S Pyfer, Umberto Tosi, Daniel M Iascone, Iraklis Petrof, Anupam Hazra, Chia-Hsuan Fu, Gabriel S Stephens, Annie Ashok, Suzan Aschmies, Lijuan Zhao, Eric J Nestler, Jeannie Chin

Department of Neuroscience Faculty Papers

Alzheimer's disease (AD) is characterized by cognitive decline and 5- to 10-fold increased seizure incidence. How seizures contribute to cognitive decline in AD or other disorders is unclear. We show that spontaneous seizures increase expression of ΔFosB, a highly stable Fos-family transcription factor, in the hippocampus of an AD mouse model. ΔFosB suppressed expression of the immediate early gene c-Fos, which is critical for plasticity and cognition, by binding its promoter and triggering histone deacetylation. Acute histone deacetylase (HDAC) inhibition or inhibition of ΔFosB activity restored c-Fos induction and improved cognition in AD mice. Administration of seizure-inducing agents to nontransgenic …


Changes In The Gut Microbial Communities Following Addition Of Walnuts To The Diet, Lauri O. Byerley, Derrick Samuelson, Eugene Blanchard, Meng Luo, Brittany N. Lorenzen, Shelia Banks, Monica A. Ponder, David A. Welsh, Christopher M. Taylor Jul 2017

Changes In The Gut Microbial Communities Following Addition Of Walnuts To The Diet, Lauri O. Byerley, Derrick Samuelson, Eugene Blanchard, Meng Luo, Brittany N. Lorenzen, Shelia Banks, Monica A. Ponder, David A. Welsh, Christopher M. Taylor

School of Graduate Studies Faculty Publications

Walnuts are rich in omega-3 fatty acids, phytochemicals and antioxidants making them unique compared to other foods. Consuming walnuts has been associated with health benefits including a reduced risk of heart disease and cancer. Dysbiosis of the gut microbiome has been linked to several chronic diseases. One potential mechanism by which walnuts may exert their health benefit is through modifying the gut microbiome. This study identified the changes in the gut microbial communities that occur following the inclusion of walnuts in the diet. Male Fischer 344 rats (n=20) were randomly assigned to one of two diets for as long as …


Osteopontin Facilitates West Nile Virus Neuroinvasion Via Neutrophil “Trojan Horse” Transport, Amber M. Paul, Dhiraj Acharya, Laurel Duty, E. Ashley Thompson, Linda Le, Dobrivoje S. Stokic, A. Arturo Leis, Fengwei Bai Jul 2017

Osteopontin Facilitates West Nile Virus Neuroinvasion Via Neutrophil “Trojan Horse” Transport, Amber M. Paul, Dhiraj Acharya, Laurel Duty, E. Ashley Thompson, Linda Le, Dobrivoje S. Stokic, A. Arturo Leis, Fengwei Bai

Publications

West Nile virus (WNV) can cause severe human neurological diseases including encephalitis and meningitis. The mechanisms by which WNV enters the central nervous system (CNS) and host factors that are involved in WNV neuroinvasion are not completely understood. The proinflammatory chemokine osteopontin (OPN) is induced in multiple neuroinflammatory diseases and is responsible for leukocyte recruitment to sites of its expression. In this study, we found that WNV infection induced OPN expression in both human and mouse cells. Interestingly, WNV-infected OPN deficient (Opn−/−) mice exhibited a higher survival rate (70%) than wild type (WT) control mice (30%), suggesting OPN plays a …


Parasite Microbiome Project: Systematic Investigation Of Microbiome Dynamics Within And Across Parasite-Host Interactions., Nolwenn M Dheilly, Daniel Bolnick, Seth Bordenstein, Paul J Brindley, Cédric Figuères, Edward C Holmes, Joaquín Martínez Martínez, Anna J Phillips, Robert Poulin, Karyna Rosario Jul 2017

Parasite Microbiome Project: Systematic Investigation Of Microbiome Dynamics Within And Across Parasite-Host Interactions., Nolwenn M Dheilly, Daniel Bolnick, Seth Bordenstein, Paul J Brindley, Cédric Figuères, Edward C Holmes, Joaquín Martínez Martínez, Anna J Phillips, Robert Poulin, Karyna Rosario

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Understanding how microbiomes affect host resistance, parasite virulence, and parasite-associated diseases requires a collaborative effort between parasitologists, microbial ecologists, virologists, and immunologists. We hereby propose the Parasite Microbiome Project to bring together researchers with complementary expertise and to study the role of microbes in host-parasite interactions. Data from the Parasite Microbiome Project will help identify the mechanisms driving microbiome variation in parasites and infected hosts and how that variation is associated with the ecology and evolution of parasites and their disease outcomes. This is a call to arms to prevent fragmented research endeavors, encourage best practices in experimental approaches, and …


Helminth Infection-Induced Malignancy., Paul J Brindley, Alex Loukas Jul 2017

Helminth Infection-Induced Malignancy., Paul J Brindley, Alex Loukas

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Infectious diseases cause more than 20% of cancers in the developing world [1]. About a dozen pathogens including Epstein-Barr virus and human T cell lymphocytotropic virus 1 are among the well-known examples. In addition, infection with several trematodes, which are eukaryotes, can cause malignancy. The International Agency for Research on Cancer categorizes infection with the fish-borne trematodes Opisthorchis viverrini and Clonorchis sinensis and the blood fluke Schistosoma haematobium as Group 1 biological carcinogens [2]. In addition to parasitism directly damaging development, health, and prosperity of infected populations, infection with these helminths leads to cholangiocarcinoma (CCA) (bile duct cancer) and squamous …


Milder Alzheimer's Disease Pathology In Heart Failure And Atrial Fibrillation, Luciano A. Sposato, Estefania Ruiz Vargas, Patricia M. Riccio, Jon B. Toledo, John Q. Trojanowski, Walter A. Kukull, Lauren E. Cipriano, Antonia Nucera, Shawn N. Whitehead, Vladimir Hachinski Jul 2017

Milder Alzheimer's Disease Pathology In Heart Failure And Atrial Fibrillation, Luciano A. Sposato, Estefania Ruiz Vargas, Patricia M. Riccio, Jon B. Toledo, John Q. Trojanowski, Walter A. Kukull, Lauren E. Cipriano, Antonia Nucera, Shawn N. Whitehead, Vladimir Hachinski

Anatomy and Cell Biology Publications

Introduction:Heart failure (HF) and atrial fibrillation (AF) have been associated with a higher risk of Alzheimer’s disease (AD). Whether HF and AF are related to AD by enhancing AD neuropathological changes is unknown.

Methods:We applied network analyses and multiple logistic regression models to assess the association between HF and AF with severity of AD neuropathology in patients from the National Alzheimer’s Coordinating Center database with primary neuropathological diagnosis of AD.

Results:We included 1593 patients, of whom 129 had HF and 250 had AF. HF and AF patients were older and had milder AD pathology. In the network …


Targeting Antioxidant Enzyme Expression As A Therapeutic Strategy For Ischemic Stroke, Stephanie M. Davis, Keith R. Pennypacker Jul 2017

Targeting Antioxidant Enzyme Expression As A Therapeutic Strategy For Ischemic Stroke, Stephanie M. Davis, Keith R. Pennypacker

Center for Advanced Translational Stroke Science Faculty Publications

During ischemic stroke, neurons and glia are subjected to damage during the acute and neuroinflammatory phases of injury. Production of reactive oxygen species (ROS) from calcium dysregulation in neural cells and the invasion of activated immune cells are responsible for stroke-induced neurodegeneration. Scientists have failed thus far to identify antioxidant-based drugs that can enhance neural cell survival and improve recovery after stroke. However, several groups have demonstrated success in protecting against stroke by increasing expression of antioxidant enzymes in neural cells. These enzymes, which include but are not limited to enzymes in the glutathione peroxidase, catalase, and superoxide dismutase families, …


Metabolite Profiling Of Infection-Associated Metabolic Markers Of Onchocerciasis., Sasisekhar Bennuru, Sara Lustigman, David Abraham, Thomas B. Nutman Jul 2017

Metabolite Profiling Of Infection-Associated Metabolic Markers Of Onchocerciasis., Sasisekhar Bennuru, Sara Lustigman, David Abraham, Thomas B. Nutman

Department of Microbiology and Immunology Faculty Papers

The global efforts for onchocerciasis elimination may require additional tools (safe micro and macrofilaricidal drugs, vaccines and biomarkers) as elimination efforts move toward the "end game". Efforts toward the identification of suitable biomarkers have focused on specific protein(s) and/or nucleic acids, but metabolites present an alternative option as they have limited half-lives and are the result of combinatorial effects. In comparison to previously used methodology of LC-MS for metabolomic approaches, we used a non-targeted capillary electrophoresis time-of-flight mass spectrometry (CE-TOFMS) to analyze the serum metabolic profiles of Ov-infected and -uninfected individuals (n=20). We identified 286 known metabolites (167 in the …


Cross Reactivity Of Immune Responses To Porcine Reproductive And Respiratory Syndrome Virus Infection, Ignacio Correas, Fernando A. Osorio, David Steffen, Asit K. Pattnaik, Hiep L. X. Vu Jul 2017

Cross Reactivity Of Immune Responses To Porcine Reproductive And Respiratory Syndrome Virus Infection, Ignacio Correas, Fernando A. Osorio, David Steffen, Asit K. Pattnaik, Hiep L. X. Vu

School of Veterinary and Biomedical Sciences: Faculty Publications

Because porcine reproductive and respiratory syndrome virus (PRRSV) exhibits extensive genetic variation among field isolates, characterizing the extent of cross reactivity of immune responses, and most importantly cell-mediated immunity (CMI), could help in the development of broadly cross-protective vaccines. We infected 12 PRRSV-naïve pigs with PRRSV strain FL12 and determined the number of interferon (IFN)-γ secreting cells (SC) by ELISpot assay using ten type 2 and one type 1 PRRSV isolates as recall antigens. The number of IFN-γ SC was extremely variable among animals, and with exceptions, late to appear. Cross reactivity of IFN-γ SC among type 2 isolates was …


Cytogenetic Abnormalities In Myelodysplastic Syndromes: An Overview, Mohammad Faizan Zahid, Umair Arshad Malik, Momena Sohail, Irfan Nazir Hassan, Sara Ali, Muhammad Hamza Saad Shaukat Jul 2017

Cytogenetic Abnormalities In Myelodysplastic Syndromes: An Overview, Mohammad Faizan Zahid, Umair Arshad Malik, Momena Sohail, Irfan Nazir Hassan, Sara Ali, Muhammad Hamza Saad Shaukat

Medical College Documents

Karyotype is one of the main constituents of the International Prognostic Scoring System (IPSS) and revised-IPSS that are the cornerstones for the prognostication of patients with myelodysplastic syndromes (MDS). Del(5q), -7/del(7q), +8 and -Y are among the most extensively studied cytogenetic abnormalities in MDS. The same applies for normal karyotype. There are hundreds of other rare cytogenetic abnormalities that have been reported in MDS, included but not limited to -X, 3q abnormalities, +13/del(13q), i(17q), +21/-21. However, due to a very low number of patients, their impact on the prognosis of MDS is limited. Knowledge of the molecular consequences of different …


Crystal Structure Of Yersinia Pestis Virulence Factor Yfea Reveals Two Polyspecific Metal-Binding Sites, Christopher D. Radka, Lawrence J. Delucas, Landon S. Wilson, Matthew B. Lawrenz, Robert D. Perry, Stephen G. Aller Jul 2017

Crystal Structure Of Yersinia Pestis Virulence Factor Yfea Reveals Two Polyspecific Metal-Binding Sites, Christopher D. Radka, Lawrence J. Delucas, Landon S. Wilson, Matthew B. Lawrenz, Robert D. Perry, Stephen G. Aller

Microbiology, Immunology, and Molecular Genetics Faculty Publications

Gram-negative bacteria use siderophores, outer membrane receptors, inner membrane transporters and substrate-binding proteins (SBPs) to transport transition metals through the periplasm. The SBPs share a similar protein fold that has undergone significant structural evolution to communicate with a variety of differentially regulated transporters in the cell. In Yersinia pestis, the causative agent of plague, YfeA (YPO2439, y1897), an SBP, is important for full virulence during mammalian infection. To better understand the role of YfeA in infection, crystal structures were determined under several environmental conditions with respect to transition-metal levels. Energy-dispersive X-ray spectroscopy and anomalous X-ray scattering data show that …


Germ-Line Gene Editing And Congressional Reaction In Context: Learning From Almost 50 Years Of Congressional Reactions To Biomedical Breakthroughs, Russell A. Spivak, J.D., I. Glenn Cohen, J.D., Eli Y. Adashi, M.D., M.S. Jul 2017

Germ-Line Gene Editing And Congressional Reaction In Context: Learning From Almost 50 Years Of Congressional Reactions To Biomedical Breakthroughs, Russell A. Spivak, J.D., I. Glenn Cohen, J.D., Eli Y. Adashi, M.D., M.S.

Journal of Law and Health

On December 18, 2015, President Obama signed into law a policy rider forestalling the therapeutic modification of the human germ line. The rider, motivated by the science’s potential unethical ends, is only the most recent instance in which the legislature cut short the ongoing national conversation on the acceptability of a developing science. This essay offers historical perspective on what bills were proposed and passed surrounding four other then-developing scientific breakthroughs—Recombinant DNA, in vitro fertilization, Cloning, Stem Cells—to better analyze how Congress is, and should, regulate this exciting and promising science.


Analysis Of The Proposed Tpp-Related Patent Linkage System In Taiwan, Ping-Hsun Chen Jul 2017

Analysis Of The Proposed Tpp-Related Patent Linkage System In Taiwan, Ping-Hsun Chen

Journal of Law and Health

The Trans-Pacific Partnership (TPP) Agreement mandates member states to implement a patent linkage system vested in Article 18.53. To successfully join the TPP Agreement, Taiwan has begun the legislation of a patent linkage system by proposing an amendment for the Pharmaceutical Affairs Act. Article 18.53 requires a member either to adopt a notification mechanism under Paragraph 1 or to stay the issuance of marketing approval under Paragraph 2. But, Taiwan’s proposal includes both measures. Taiwan’s patent linkage system allows a pioneer drug company to register patents claiming (a) a material, (b) a combination or formula, or (c) pharmaceutical use. The …


Connective Tissue, Glial And Neuronal Expressions In Testis Of The African Giant Rat (Cricetomys Gambianus), T. E. Falade, Matthew A. Olude, Oluwaseun A. Mustapha, Ejikeme F. Mbajiorgu, Amadi O. Ihunwo, F. E. Olopade, B. O. Oke Jul 2017

Connective Tissue, Glial And Neuronal Expressions In Testis Of The African Giant Rat (Cricetomys Gambianus), T. E. Falade, Matthew A. Olude, Oluwaseun A. Mustapha, Ejikeme F. Mbajiorgu, Amadi O. Ihunwo, F. E. Olopade, B. O. Oke

Brain and Mind Institute

Introduction:

This study was carried out to investigate the expression of connective tissue (Collagens I and III), glia and neuronal markers in the testis of the African giant rat using histology and immunohistochemistry techniques.

Materials and Methods:

Eight (8) apparently healthy wild male African giant rats were used for this experiment, divided into 2 groups (juvenile and adult) of 4 animals each. The testes were harvested following intracardial perfusion of the rats and histology was performed using Haematoxylin-Eosin stain and Mallory-Heideinhain rapid one- step staining for connective tissue. Immunohistochemical identification was achieved using the following antibodies: anti-collagen type …


The Neural Encoding Of Reward In The Striatal-Pallidal Circuitry, Chung Lung Chan Jul 2017

The Neural Encoding Of Reward In The Striatal-Pallidal Circuitry, Chung Lung Chan

Dissertations (1934 -)

Humans and animals are constantly exposed to external stimuli. The ability to process reward value of a stimulus is critical to guiding appropriate behavior and essential for survival. These processes are regulated by neuronal activity and neurochemical signaling in the reward circuitry, particularly in the nucleus accumbens (NAc). The NAc receives dopaminergic inputs from the midbrain ventral tegmental area (VTA) and sends GABAergic projections to the ventral pallidum (VP). Electrophysiological studies have characterized phasic neuronal responses in the NAc that differential encode appetitive and aversive taste stimuli. Exposure to an appetitive taste stimulus evoked predominantly phasic inhibitory responses in the …


Functional Selectivity Of Gpcr-Directed Drug Action Through Location Bias., Roshanak Irannejad, Veronica Pessino, Delphine Mika, Bo Huang, Philip B. Wedegaertner, Marco Conti, Mark Von Zastrow Jul 2017

Functional Selectivity Of Gpcr-Directed Drug Action Through Location Bias., Roshanak Irannejad, Veronica Pessino, Delphine Mika, Bo Huang, Philip B. Wedegaertner, Marco Conti, Mark Von Zastrow

Department of Biochemistry and Molecular Biology Faculty Papers

G-protein-coupled receptors (GPCRs) are increasingly recognized to operate from intracellular membranes as well as the plasma membrane. The β 2 -adrenergic GPCR can activate G s -linked cyclic AMP (G s -cAMP) signaling from endosomes. We show here that the homologous human β 1 -adrenergic receptor initiates an internal G s -cAMP signal from the Golgi apparatus. By developing a chemical method to acutely squelch G-protein coupling at defined membrane locations, we demonstrate that Golgi activation contributes significantly to the overall cellular cAMP response. Golgi signaling utilizes a preexisting receptor pool rather than receptors delivered from the cell surface, requiring …


Alternative Splicing Promotes Tumour Aggressiveness And Drug Resistance In African American Prostate Cancer., Bi-Dar Wang, Kristin Ceniccola, Sujin Hwang, Ramez Andrawis, Anelia Horvath, Jennifer A Freedman, Jacqueline Olender, Stefan Knapp, Travers Ching, Lana Garmire, Vyomesh Patel, Mariano A Garcia-Blanco, Steven R Patierno, Norman H Lee Jun 2017

Alternative Splicing Promotes Tumour Aggressiveness And Drug Resistance In African American Prostate Cancer., Bi-Dar Wang, Kristin Ceniccola, Sujin Hwang, Ramez Andrawis, Anelia Horvath, Jennifer A Freedman, Jacqueline Olender, Stefan Knapp, Travers Ching, Lana Garmire, Vyomesh Patel, Mariano A Garcia-Blanco, Steven R Patierno, Norman H Lee

Pharmacology and Physiology Faculty Publications

linical challenges exist in reducing prostate cancer (PCa) disparities. The RNA splicing landscape of PCa across racial populations has not been fully explored as a potential molecular mechanism contributing to race-related tumour aggressiveness. Here, we identify novel genome-wide, race-specific RNA splicing events as critical drivers of PCa aggressiveness and therapeutic resistance in African American (AA) men. AA-enriched splice variants of PIK3CD, FGFR3, TSC2 and RASGRP2 contribute to greater oncogenic potential compared with corresponding European American (EA)-expressing variants. Ectopic overexpression of the newly cloned AA-enriched variant, PIK3CD-S, in EA PCa cell lines enhances AKT/mTOR signalling and increases proliferative …


Numerically Solving A System Of Pdes Modeling Chronic Wounds Treated With Oxygen Therapy, Stefan Stryker Jun 2017

Numerically Solving A System Of Pdes Modeling Chronic Wounds Treated With Oxygen Therapy, Stefan Stryker

Mahurin Honors College Capstone Experience/Thesis Projects

Chronic wounds such as diabetic foot ulcers are the leading cause of non-traumatic amputations in developed countries. For researchers to better understand the physiology of these wounds, a mathematical model describing oxygen levels at the wound site can be used to help predict healing responses. The model utilizes equations that are modified from work by Guffey (2015) that consists of four variables – oxygen, bacteria, neutrophils, and chemoattractant within a system of partial differential equations. Our research focuses on numerically solving these partial differential equations using a finite volume approach. This numerical solver will be important for future research in …


Activin Receptor Type 2a (Acvr2a) Functions Directly In Osteoblasts As A Negative Regulator Of Bone Mass, Brian C. Goh, Vandana Singhal, Angelica J. Herrera, Ryan E. Tomlinson, Soohyun Kim, Marie-Claude Faugere, Emily L. Germain-Lee, Thomas L. Clemens, Se-Jin Lee, Douglas J. Digirolamo Jun 2017

Activin Receptor Type 2a (Acvr2a) Functions Directly In Osteoblasts As A Negative Regulator Of Bone Mass, Brian C. Goh, Vandana Singhal, Angelica J. Herrera, Ryan E. Tomlinson, Soohyun Kim, Marie-Claude Faugere, Emily L. Germain-Lee, Thomas L. Clemens, Se-Jin Lee, Douglas J. Digirolamo

Internal Medicine Faculty Publications

Bone and skeletal muscle mass are highly correlated in mammals, suggesting the existence of common anabolic signaling networks that coordinate the development of these two anatomically adjacent tissues. The activin signaling pathway is an attractive candidate to fulfill such a role. Here, we generated mice with conditional deletion of activin receptor (ACVR) type 2A, ACVR2B, or both, in osteoblasts, to determine the contribution of activin receptor signaling in regulating bone mass. Immunohistochemistry localized ACVR2A and ACVR2B to osteoblasts and osteocytes. Primary osteoblasts expressed activin signaling components, including ACVR2A, ACVR2B, and ACVR1B (ALK4) and demonstrated increased levels of phosphorylated Smad2/3 upon …


Abnormal Dendritic Maturation Of Developing Cortical Neurons Exposed To Corticotropin Releasing Hormone (Crh): Insights Into Effects Of Prenatal Adversity?, Megan M. Curran, Curt A. Sandman, Elysia Poggi Davis, Laura M. Glynn, Tallie Z. Baram Jun 2017

Abnormal Dendritic Maturation Of Developing Cortical Neurons Exposed To Corticotropin Releasing Hormone (Crh): Insights Into Effects Of Prenatal Adversity?, Megan M. Curran, Curt A. Sandman, Elysia Poggi Davis, Laura M. Glynn, Tallie Z. Baram

Psychology: Faculty Scholarship

Corticotropin releasing hormone (CRH) produced by the hypothalamus initiates the hypothalamic-pituitary-adrenal (HPA) axis, which regulates the body’s stress response. CRH levels typically are undetectable in human plasma, but during pregnancy the primate placenta synthesizes and releases large amounts of CRH into both maternal and fetal circulations. Notably, placental CRH synthesis increases in response to maternal stress signals. There is evidence that human fetal exposure to high concentrations of placental CRH is associated with behavioral consequences during infancy and into childhood, however the direct effects on of the peptide on the human brain are unknown. In this study, we used a …


Cytotoxicity Of Platinum Anticancer Drugs In Mammalian Cell Lines Of Metastatic Cancer, Hosannah Evie Jun 2017

Cytotoxicity Of Platinum Anticancer Drugs In Mammalian Cell Lines Of Metastatic Cancer, Hosannah Evie

Mahurin Honors College Capstone Experience/Thesis Projects

With the invention of advanced technology, focus has been put on understanding and looking for potential cures for many diseases, one of which is cancer. The difference in the leaving and non-leaving ligands of the FDA approved cancer drugs contributes to the differential cell specific cytotoxic effects. These drugs such as oxaliplatin approved for colorectal cancer, cisplatin approved for testicular cancer, and their analogs were used to treat different cancer cell lines in an MTT assay. This project aims to determine how changing the molecular shape of these compounds affects their uptake and toxicity into different cell lines. The assay …


Week Of June 26, 2017, New York Medical College Jun 2017