Medicine and Health Sciences Commons^™

Bronchoscopie En Milieu Hospitalier : Évaluation Des Expositions Aux Bioaérosols, Jacques Lavoie, Geneviève Marchand, Yves Cloutier, Yves Beaudet, Stéphane Hallé, Sylvie Nadeau, Gilbert Pichette, Caroline Duchaine

Rapports de recherche scientifique

Lors des examens de bronchoscopie en milieu hospitalier, des aérosols provenant de la bouche et du nez du patient peuvent se retrouver en suspension dans l’air ambiant. Les aérosols produits peuvent contenir des microorganismes pathogènes, tels des mycobactéries, des bactéries, des virus et même des moisissures. Ces microorganismes peuvent également être aérosolisés lors du nettoyage des bronchoscopes effectué après l’examen. Selon la nature de ces microorganismes ou bioaérosols, ils peuvent persister assez longtemps dans l’air et potentiellement causer des infections chez les travailleurs exposés. L’objectif principal de cette recherche est de mesurer les concentrations des particules totales et biologiques lors …

Targeted Dna Damage At Individual Telomeres Disrupts Their Integrity And Triggers Cell Death, Luxi Sun, Rong Tan, Jianquan Xu, Justin Laface, Ying Gao, Yanchun Xiao, Myriam Attar, Carola Neumann, Guo-Min Li, Bing Su, Yang Liu, Satoshi Nakajima, Arthur S. Levine, Li Lan

Markey Cancer Center Faculty Publications

Cellular DNA is organized into chromosomes and capped by a unique nucleoprotein structure, the telomere. Both oxidative stress and telomere shortening/dysfunction cause aging-related degenerative pathologies and increase cancer risk. However, a direct connection between oxidative damage to telomeric DNA, comprising <1% of the genome, and telomere dysfunction has not been established. By fusing the KillerRed chromophore with the telomere repeat binding factor 1, TRF1, we developed a novel approach to generate localized damage to telomere DNA and to monitor the real time damage response at the single telomere level. We found that DNA damage at long telomeres in U2OS cells is not repaired efficiently compared to DNA damage in non-telomeric regions of the same length in heterochromatin. Telomeric DNA damage shortens the average length of telomeres and leads to cell senescence in HeLa cells and cell death in HeLa, U2OS and IMR90 cells, when DNA damage at non-telomeric regions is undetectable. Telomere-specific damage induces chromosomal aberrations, including chromatid telomere loss and telomere associations, distinct from the damage induced by ionizing irradiation. Taken together, our results demonstrate that oxidative damage induces telomere dysfunction and underline the importance of maintaining telomere integrity upon oxidative damage.

Addressing Therapeutic Options For Ebola Virus Infection In Current And Future Outbreaks, Azizul Haque, Didier Hober, Joel Blondiaux

Dartmouth Scholarship

Ebola virus can cause severe hemorrhagic disease with high fatality rates. Currently, no specific therapeutic agent or vaccine has been approved for treatment and prevention of Ebola virus infection of humans. Although the number of Ebola cases has fallen in the last few weeks, multiple outbreaks of Ebola virus infection and the likelihood of future exposure highlight the need for development and rapid evaluation of pre- and postexposure treatments. Here, we briefly review the existing and future options for anti-Ebola therapy, based on the data coming from rare clinical reports, studies on animals, and results from in vitro models. We …

Stratification Of A Population Of Intracranial Aneurysms Using Blood Flow Metrics., Rohini Retarekar, Manasi Ramachandran, Benjamin Berkowitz, Robert E. Harbaugh, David Hasan, Robert H. Rosenwasswer, Christopher S. Ogilvy, Madhavan L. Raghavan

Department of Neurosurgery Faculty Papers

Indices of the intra-aneurysm hemodynamic environment have been proposed as potentially indicative of their longitudinal outcome. To be useful, the indices need to be used to stratify large study populations and tested against known outcomes. The first objective was to compile the diverse hemodynamic indices reported in the literature. Furthermore, as morphology is often the only patient-specific information available in large population studies, the second objective was to assess how the ranking of aneurysms in a population is affected by the use of steady flow simulation as an approximation to pulsatile flow simulation, even though the former is clearly non-physiological. …

Week Of July 27, 2015, New York Medical College

InTouch

• Public Health Program Passes the Test... with Flying Colors
• School of Medicine Class of 2017 Transitions to the Clinical Years
• NYMC Hosts 16th Pediatric Cancer Research Foundation Memorial Lectureship
• NYMC Reaches Out to Nepal
• NYMC Hosts Open Door Family Medical Centers Summer Students
• Lawrence Shapiro, M.D., Is Named Professor Emeritus of Pediatrics

Medical School Watercooler Newsletter - July 26, 2015, Lindsey Lyle

Watercooler Newsletter

This is the July 26, 2015 edition of the Frederick P. Whiddon College of Medicine's Newsletter - Watercooler.

Contents Include:

USA Welcomes Dr. Maximilian Pyko

Dr. Barrington Receives Grant Award from American Lung Association

SouthMed Prep Scholars Present Research at USA

Tobacco Cessation - Staying on Track

Implementation Of Resident-Driven, Quality-Based Improvement Projects At A Single Academic Institution: Resident Value And Institutional Outcomes, Kathleen M. Lamb, Md, Randi E. Altmark, Rn, Bsn, Cnor, Adam P. Johnson, Md, Mph, Richard A. Burkhart, Md, Karen A. Chojnacki, Md, Facs, Scott W. Cowan, Md, Facs

Department of Surgery Faculty Papers

Significance

Finding a viable and sustainable methodology for resident involvement in surgical quality improvement is not only a GME requirement, but also imperative to patient care.

'Space Surgeon' Learns To Perform Procedures In Near-Zero Gravity, Jonathan Sher

Data and Test Instruments

Vivian McAlister’s experience as a small-town doctor, key member of a legendary London transplant team and a soldier who enlisted at age 52 — and went through basic training — caught the eye of researchers looking for a surgeon who was resourceful and willing to push the limits. McAlister is exploring a new frontier in medicine — operating in near-zero gravity.

Halting The Hallmarks: A Cellular Automaton Model Of Early Cancer Growth Inhibition, Jenna Butler, Frances Mackay, Colin Denniston, Mark Daley

Brain and Mind Institute Researchers' Publications

Cancer treatment is a fragmented and varied process, as ‘‘cancer’’ is really hundreds of different diseases. The ‘‘hallmarks of cancer’’ proposed by Hanahan and Weinberg (Cell 100(1):57–70, 2000) are a framework for viewing cancer within a common set of underlying principles—ten properties that are common to almost all cancers, allowing them to grow uncontrollably and ravage the body. We used a cellular automaton model of tumour growth paired with lattice Boltzmann methods modelling oxygen flow to simulate combination drugs targeted at knocking out pairs of hallmarks. We found that knocking out some pairs of cancer-enabling hallmarks did not prevent tumour …

Abc Of Severe Mental Illness, Amresh Srivastava

Data and Test Instruments

Amresh Srivastava MD,MRCPsych,FRCPC Associate Professore of Psychiatry Western University London.ON Severe Mental Illnesses: Training and Education - About 4% patients in the community suffer from severe mental illness and about 16% from ‘any mental disorder’ Maximum financial and human resource allocations for mental health is consumed in managing severe mental disorders, leaving very little for treatment of early phase of illness and for developing preventive program. All of us, psychiatrists, family physicians, other mental health professionals like, nurse, psychologists, socal workers, occupational therapists, counsellors, and members of advocacy groups and mental health organisations, face the challenge for managing patients who …

Dna Methylation In Ductal Carcinoma In Situ Related With Future Development Of Invasive Breast Cancer, Kevin C. Johnson, Devin C. Koestler, Thomas Fleischer, Panpan Chen, Erik G. Jenson, Jonathan D. Marotti, Tracy Onega, Vessela N. Kristenen, Brock C. Christensen

Dartmouth Scholarship

Background: Ductal carcinoma in situ (DCIS) is a heterogeneous, pre-invasive lesion associated with an increased risk for future invasive ductal carcinoma. However, accurate risk stratification for development of invasive disease and appropriate treatment decisions remain clinical challenges. DNA methylation alterations are early events in the progression of cancer and represent emerging molecular markers that may predict invasive recurrence more accurately than traditional measures of DCIS prognosis.

Results: We measured DNA methylation using the Illumina HumanMethylation450K array of estrogen-receptor positive DCIS (n = 40) and adjacent-normal (n = 15) tissues from subjects in the New Hampshire Mammography Network longitudinal breast imaging …

Concussion Awareness And Educational Outreach Through A Website And Mobile Application, Daniel J. Brogan

Neuroscience Summer Fellows

In recent years concussions have become a more apparent problem in youth and adolescent sports. 1 in 5 high school students will sustain a concussion during the season. Due to medical and scientific advances, the diagnosis of concussions is becoming much simpler with key markers that are signs for an injury. Returning to play too soon before an athlete is fully recovered increases the likelihood that serious and irreversible neurological deficits can occur. Symptoms for concussions are necessary to track in order for an athlete to properly report their recovery to a physician. Doctors primarily rely on a patient’s report …

Inflammation Mediated Metastasis: Immune Induced Epithelial-To-Mesenchymal Transition In Inflammatory Breast Cancer Cells., Evan N Cohen, Hui Gao, Simone Anfossi, Michal Mego, Neelima G Reddy, Bisrat Debeb, Antonio Giordano, Sanda Tin, Qiong Wu, Raul J Garza, Massimo Cristofanilli, Sendurai A Mani, Denise A Croix, Naoto T Ueno, Wendy A Woodward, Raja Luthra, Savitri Krishnamurthy, James M Reuben

Department of Medical Oncology Faculty Papers

Inflammatory breast cancer (IBC) is the most insidious form of locally advanced breast cancer; about a third of patients have distant metastasis at initial staging. Emerging evidence suggests that host factors in the tumor microenvironment may interact with underlying IBC cells to make them aggressive. It is unknown whether immune cells associated to the IBC microenvironment play a role in this scenario to transiently promote epithelial to mesenchymal transition (EMT) in these cells. We hypothesized that soluble factors secreted by activated immune cells can induce an EMT in IBC and thus promote metastasis. In a pilot study of 16 breast …

Health & Kinesiology News, Georgia Southern University

Health Sciences & Kinesiology: News & Publications (2015-2023)

• Exercise is Medicine on Campus Recognizes Participating Colleges and Universities

The Fkbp52 Cochaperone Acts In Synergy With Β-Catenin To Potentiate Androgen Receptor Signaling, Cheryl Samaniego, Ji Ho Suh, Arundhati Chattopadhyay, Karen Olivares, Naihsuan Guy, Jeffrey C. Sivils, Prasenjit Dey, Fumiak Yumoto, Robert J. Fletterick, Anders M. Strom, Jan-Åke Gustafsson, Paul Webb, Marc B. Cox

Biology Publications

FKBP52 and β-catenin have emerged in recent years as attractive targets for prostate cancer treatment. β-catenin interacts directly with the androgen receptor (AR) and has been characterized as a co-activator of AR-mediated transcription. FKBP52 is a positive regulator of AR in cellular and whole animal models and is required for the development of androgendependent tissues. We previously characterized an AR inhibitor termed MJC13 that putatively targets the AR BF3 surface to specifically inhibit FKBP52-regulated AR signaling. Predictive modeling suggests that β-catenin interacts with the AR hormone binding domain on a surface that overlaps with BF3. Here we demonstrate that FKBP52 …

The Alzheimer’S Association Dementia Care Coordination Program: A Process Evaluation, Executive Summary, Nina Silverstein, Frank Porell, Pamela Nadash

Gerontology Institute Publications

The Massachusetts/New Hampshire (MA/NH) Chapter of the Alzheimer's Association has long sought ways to systematically increase the number of families who utilize its services and support. According to the Alzheimer’s Association’s 2015 Alzheimer’s Disease Facts and Figures, there are 142,000 individuals living with Alzheimer’s disease in Massachusetts and New Hampshire, and the Alzheimer’s Association estimates that less than 30% of those individuals and their caregivers take advantage of its programs (Alzheimer’s Association, 2015). The MA/NH Chapter recognized that one major barrier to accessing services is a model that relies on families taking the initiative to seek out assistance.

In …

Trustworthy Guidelines – Excellent; Customized Care Tools – Even Better, Glyn Elwyn, Casey Quinlan, Albert Mulley, Thomas Agoritsas, Per Olav Vandvik, Gordon Guyatt

Dartmouth Scholarship

Background:

The ability to do online searches for health information has led to concerns that patients find the results confusing and that they often lead to expectations for treatments that have little supportive evidence. At the same time, the science of summarizing research evidence has advanced to the point where it is increasingly possible to quantify treatment tradeoffs and to describe the balance between harms and benefits for individual patients.

Discussion:

Trustworthy clinical practice guidelines provide evidence-based recommendations to health care practitioners based on assessments of study-level averages. In an effort to customize the use of evidence and ensure that …

The Association Of Different Types Of Bullying With The Mental Health Of Children And Teens From The United States, France, And Canada, Christina Fisher

Media and Communication Studies Summer Fellows

Bullying continues to trouble youths around the world, sometimes with devastating effects for victims’ mental health. This suggests an ongoing need for awareness, intervention and tolerance for everyone involved. This study, a literature review, explored the extent of these mental health effects found in 50 studies of victims, bullies, and bully-victims, those who are victims of bullying and who also bully others, in the United States, France, and Canada (Willard, 2007). Particular attention was paid to the impact that gender, age, ethnicity, and the LGBTQ community had on researchers’ findings. Findings show that 25.9% to 33% of students in these …

Decriminalizing Mental Illness: The Need For Treatment Over Incarceration Before Prisons Become The New Asylums For The Mentally Ill, Rebecca L. Brown

Psychology Summer Fellows

Currently, US prisons are home to 10 times more mentally ill individuals than state psychiatric hospitals. Instead of treating those with mental illness, an extremely vulnerable population is being thrown behind bars. Mental illness is often exacerbated during incarceration, leaving inmates much sicker than when they entered. Moreover, upon discharge mentally ill inmates have virtually no support, making recidivism almost inevitable. This lack of treatment has devastating consequences for the mentally ill as well as the community at large. Removing the mentally ill from jails and prisons would reduce recidivism, increase public safety and save money.

The current research explores …

College Of Public Health News, Georgia Southern University

College of Public Health: News & Publications

• Georgia Southern Compares Two Generalized Lindley Distributions

Isis Pharmaceuticals Launches Historic Clinical Trial To Silence Huntington's Disease Gene, Kenneth P. Serbin

At Risk for Huntington's Disease

No abstract provided.

Gallic Acid, A Phenolic Compound, Exerts Anti-Angiogenic Effects Via The Pten/Akt/Hif-1Α/Vegf Signaling Pathway In Ovarian Cancer Cells, Zhiping He, Allen Y. Chen, Yon Rojanasakul, Gary O. Rankin, Yi Charlie Chen

Pharmaceutical Science and Research

Gallic acid (GA), a polyphenol, is widely found in numerous fruits and vegetables, particularly in hickory nuts. In the present study, we found that gallic acid, a natural phenolic compound isolated from fruits and vegetables, had a more potent growth inhibitory effect on two ovarian cancer cell lines, OVCAR-3 and A2780/CP70, than the effect on a normal ovarian cell line, IOSE-364. These results demonstrated that GA selectively inhibits the growth of cancer cells. Gene expression was examined by ELISA and western blot analysis, and gene pathways were examined by luciferase assay. It was found that GA inhibited VEGF secretion and …

Inflammatory Muscle Diseases., Marinos Dalakas

Department of Medicine Faculty Papers

No abstract provided.

Macrolide-Resistant Mycoplasma Pneumoniae, United States, Xiaotian Zheng, Stella Lee, Rangaraj Selvarangan, Xuan Qin, Yi Wei Tang, Jeffrey Stiles, Tao Hong, Kathleen Todd, Amy E. Ratliff, Donna M. Crabb, Li Xiao, T. Prescott Atkinson, Ken B. Waites

Manuscripts, Articles, Book Chapters and Other Papers

© 2015, Centers for Disease Control and Prevention (CDC). All rights reserved.

Macrolide-resistant Mycoplasma pneumoniae (MRMP) is highly prevalent in Asia and is now being reported from Europe. Few data on MRMP are available in the United States. Using genotypic and phenotypic methods, we detected high-level MRMP in 13.2% of 91 M. pneumoniae–positive specimens from 6 US locations.

Impaired Executive Function In Concussed Athletes, Marisa Gretz

Neuroscience Summer Fellows

Concussions are classified as mild traumatic brain injuries (mTBI). An individual that has sustained a concussion will experience symptoms such as nausea, possible memory loss, blurry vision, or loss of balance. Most symptoms subside within a few days, but a large pool of research raises concern for the recovery of executive function, specifically impulse control. Executive function relates to all tasks that require deliberate attention. Past research has shown adolescents record the highest number of sports concussions when compared to collegiate and professional athletes. The frontal lobe, which controls executive function, is not fully developed during the time of adolescence. …

Diffusion Tensor Imaging Of Dolphin Brains Reveals Direct Auditory Pathway To Temporal Lobe, Gregory S. Berns, Peter F. Cook, Sean Foxley, Saad Jbabdi, Karla L. Miller, Lori Marino

Veterinary Science and Medicine Collection

The brains of odontocetes (toothed whales) look grossly different from their terrestrial relatives. Because of their adaptation to the aquatic environment and their reliance on echolocation, the odontocetes’ auditory system is both unique and crucial to their survival. Yet, scant data exist about the functional organization of the cetacean auditory system. A predominant hypothesis is that the primary auditory cortex lies in the suprasylvian gyrus along the vertex of the hemispheres, with this position induced by expansion of ‘associative0 regions in lateral and caudal directions. However, the precise location of the auditory cortex and its connections are still unknown. Here, …

Examining Factors Influencing Colorectal Cancer Screening Of Rural Nebraskans Using Data From Clinics Participating In An Accountable Care Organization: A Study Protocol., Lufei Young, Jungyoon Kim, Hongmei Wang, Li-Wu Chen

Journal Articles: College of Nursing

BACKGROUND: Although mortality rates of colorectal cancer (CRC) can be significantly reduced through increased screening, rural communities are still experiencing lower rates of screening compared to urban counterparts. Understanding and eliminating barriers to cancer screening will decrease cancer burden and lead to substantial gains in quality and quantity of life for rural populations. However, existing studies have shown inconsistent findings and fail to address how contextual and provider-level factors impact CRC screening in addition to individual-level factors.

PURPOSE: The purpose of the study is to examine multi-level factors related to CRC screening, and providers' perception of barriers and facilitators of …

Compassionate Use Of Experimental Therapies: Who Should Decide?, Patricia J. Zettler

Faculty Publications By Year

In addition to being an example of unsubstantiated hype about regenerative medicine, the controversy around the Italy-based Stamina Foundation's unproven stem cell therapy represents another chapter in a continuing debate about how to balance patients' requests for early access to experimental medicines with requirements for demonstrating safety and effectiveness. Compassionate use of the Stamina therapy arguably should not have been permitted under Italy's laws, but public pressure was intense and judges ultimately granted access. One lesson from these events is that expert regulatory agencies may be the institutions most competent to make compassionate use decisions and that policies should include …

Efficacy Of Galactose And Adalimumab In Patients With Resistant Focal Segmental Glomerulosclerosis: Report Of The Font Clinical Trial Group., Howard Trachtman, Suzanne Vento, Emily Herreshoff, Milena Radeva, Jennifer Gassman, Daniel T. Stein, Virginia J. Savin, Mukut Sharma, Jochen Reiser, Changli Wei, Michael Somers, Tarak Srivastava, Debbie S. Gipson

Manuscripts, Articles, Book Chapters and Other Papers

BACKGROUND: Patients with resistant focal segmental glomerulosclerosis (FSGS) who are unresponsive to corticosteroids and other immunosuppressive agents are at very high risk of progression to end stage kidney disease. In the absence of curative treatment, current therapy centers on renoprotective interventions that reduce proteinuria and fibrosis. The FONT (Novel Therapies for Resistant FSGS) Phase II clinical trial (NCT00814255, Registration date December 22, 2008) was designed to assess the efficacy of adalimumab and galactose compared to standard medical therapy which was comprised of lisinopril, losartan, and atorvastatin.

METHODS: Key eligibility criteria were biopsy confirmed primary FSGS or documentation of a causative …

Genome-Wide Meta-Analysis In Alopecia Areata Resolves Hla Associations And Reveals Two New Susceptibility Loci, Regina C. Betz, Lynn Petukhova, Stephan Ripke, Hailiang Huang, Androniki Menelaou, Silke Redeler, Tim Becker, Stefanie Heilmann, Tarek Yamany, Madeleine Duvic, Maria Hordinsky, David Norris, Vera H. Price, Julian Mackay-Wiggan, Annemieke De Jong, Gina M. Destefano, Susanne Moebus, Markus Böhm, Ulrike Blume-Peytavi, Hans Wolff, Gerhard Lutz, Roland Kruse, Li Bian, Christopher I. Amos

Dartmouth Scholarship

Alopecia areata (AA) is a prevalent autoimmune disease with ten known susceptibility loci. Here we perform the first meta-analysis in AA by combining data from two genome-wide association studies (GWAS), and replication with supplemented ImmunoChip data for a total of 3,253 cases and 7,543 controls. The strongest region of association is the MHC, where we fine-map 4 independent effects, all implicating HLA-DR as a key etiologic driver. Outside the MHC, we identify two novel loci that exceed statistical significance, containing ACOXL/BCL2L11(BIM) (2q13); GARP (LRRC32) (11q13.5), as well as a third nominally significant region SH2B3(LNK)/ ATXN2 (12q24.12). Candidate susceptibility gene expression …