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https://www.readbyqxmd.com/read/29155790/a-mouse-5-6th-nephrectomy-model-that-induces-experimental-uremic-cardiomyopathy
#1
Xiaoliang Wang, Muhammad A Chaudhry, Ying Nie, Zijian Xie, Joseph I Shapiro, Jiang Liu
Chronic kidney disease (CKD) is a great risk factor for cardiovascular disease events and mortality, and progressively develops to the clinical phenotype called "uremic cardiomyopathy". We describe here an experimental CKD mouse model, named 5/6(th) partial nephrectomy (PNx) with pole ligation, which developed uremic cardiomyopathy at four weeks post-surgery. This PNx model was performed by a two-step surgery. In step-one surgery, both poles of the left kidney were ligated. In step-two surgery, which was performed 7 days after the step-one surgery, the right kidney was removed...
November 7, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29152572/a-null-mutation-in-serpine1-protects-against-biological-aging-in-humans
#2
Sadiya S Khan, Sanjiv J Shah, Ekaterina Klyachko, Abigail S Baldridge, Mesut Eren, Aaron T Place, Abraham Aviv, Eli Puterman, Donald M Lloyd-Jones, Meadow Heiman, Toshio Miyata, Sweta Gupta, Amy D Shapiro, Douglas E Vaughan
Plasminogen activator inhibitor-1 (PAI-1) has been shown to be a key component of the senescence-related secretome and a direct mediator of cellular senescence. In murine models of accelerated aging, genetic deficiency and targeted inhibition of PAI-1 protect against aging-like pathology and prolong life span. However, the role of PAI-1 in human longevity remains unclear. We hypothesized that a rare loss-of-function mutation in SERPINE1 (c.699_700dupTA), which encodes PAI-1, could play a role in longevity and metabolism in humans...
November 2017: Science Advances
https://www.readbyqxmd.com/read/29149550/a-promising-on-demand-treatment-option-for-bleeding-events-in-haemophilia-patients-with-inhibitors
#3
Amy D Shapiro
No abstract text is available yet for this article.
November 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29148090/assessment-of-cumulative-health-risk-in-the-world-trade-center-general-responder-cohort
#4
Ghalib A Bello, Susan L Teitelbaum, Roberto G Lucchini, Christopher R Dasaro, Moshe Shapiro, Julia R Kaplan, Michael A Crane, Denise J Harrison, Benjamin J Luft, Jacqueline M Moline, Iris G Udasin, Andrew C Todd
BACKGROUND: Multiple comorbidities have been reported among rescue/recovery workers responding to the 9/11/2001 WTC disaster. In this study, we developed an index that quantifies the cumulative physiological burden of comorbidities and predicts life expectancy in this cohort. METHODS: A machine learning approach (gradient boosting) was used to model the relationship between mortality and several clinical parameters (laboratory test results, blood pressure, pulmonary function measures)...
November 17, 2017: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/29146814/natural-selection-shaped-the-rise-and-fall-of-passenger-pigeon-genomic-diversity
#5
Gemma G R Murray, André E R Soares, Ben J Novak, Nathan K Schaefer, James A Cahill, Allan J Baker, John R Demboski, Andrew Doll, Rute R Da Fonseca, Tara L Fulton, M Thomas P Gilbert, Peter D Heintzman, Brandon Letts, George McIntosh, Brendan L O'Connell, Mark Peck, Marie-Lorraine Pipes, Edward S Rice, Kathryn M Santos, A Gregory Sohrweide, Samuel H Vohr, Russell B Corbett-Detig, Richard E Green, Beth Shapiro
The extinct passenger pigeon was once the most abundant bird in North America, and possibly the world. Although theory predicts that large populations will be more genetically diverse, passenger pigeon genetic diversity was surprisingly low. To investigate this disconnect, we analyzed 41 mitochondrial and 4 nuclear genomes from passenger pigeons and 2 genomes from band-tailed pigeons, which are passenger pigeons' closest living relatives. Passenger pigeons' large population size appears to have allowed for faster adaptive evolution and removal of harmful mutations, driving a huge loss in their neutral genetic diversity...
November 17, 2017: Science
https://www.readbyqxmd.com/read/29146393/cracking-the-clinician-educator-code-in-gastroenterology
#6
Jordan M Shapiro, Milena Gould Suarez, Teri Lee Turner
No abstract text is available yet for this article.
December 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29145891/the-inuit-gut-microbiome-is-dynamic-over-time-and-shaped-by-traditional-foods
#7
Geneviève Dubois, Catherine Girard, François-Joseph Lapointe, B Jesse Shapiro
BACKGROUND: The human gut microbiome represents a diverse microbial community that varies across individuals and populations, and is influenced by factors such as host genetics and lifestyle. Diet is a major force shaping the gut microbiome, and the effects of dietary choices on microbiome composition are well documented. However, it remains poorly known how natural temporal variation in diet can affect the microbiome. The traditional Inuit diet is primarily based on animal products, which are thought to vary seasonally according to prey availability...
November 16, 2017: Microbiome
https://www.readbyqxmd.com/read/29145442/downregulation-of-kcnmb4-expression-and-changes-in-bk-channel-subtype-in-hippocampal-granule-neurons-following-seizure-activity
#8
Luke E Whitmire, Ling Ling, Vladslav Bugay, Chase M Carver, Santosh Timilsina, Hui-Hsiu Chuang, David B Jaffe, Mark S Shapiro, Jose E Cavazos, Robert Brenner
A major challenge is to understand maladaptive changes in ion channels that sets neurons on a course towards epilepsy development. Voltage- and calcium-activated K+ (BK) channels contribute to early spike timing in neurons, and studies indicate that the BK channel plays a pathological role in increasing excitability early after a seizure. Here, we have investigated changes in BK channels and their accessory β4 subunit (KCNMB4) in dentate gyrus (DG) granule neurons of the hippocampus, key neurons that regulate excitability of the hippocampus circuit...
2017: PloS One
https://www.readbyqxmd.com/read/29143348/runx-2-opn-and-ocn-expression-induced-by-grey-and-white-mineral-trioxide-aggregate-in-normal-and-hypertensive-rats
#9
C M Martins, I O A Queiroz, E Ervolino, L T A Cintra, J E Gomes-Filho
AIM: To investigate whether hypertension affects white and grey mineral trioxide aggregate (MTA Angelus (®) ) mineralization implanted subcutaneously into rats by assaying osteoblastic biomarkers. METHODOLOGY: Polyethylene tubes containing grey MTA Angelus (®) , white MTA Angelus (®) , intermediate restorative material (IRM; positive control), or an empty tube (negative control) were implanted into the dorsal connective tissue of spontaneous hypertensive (n = 12) and Wistar (normotensive; n = 10) rats...
November 16, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/29142781/snapping-pes-anserinus-and-the-diagnostic-utility-of-dynamic-ultrasound
#10
Shane A Shapiro, Lorenzo O Hernandez, Daniel P Montero
Snapping pes anserinus syndrome is an often encountered cause of medial knee snapping. It results from impingement and translation of the gracilis tendon or semitendinosus tendon over the osseous structures of the knee during active flexion and extension. Ultrasonography is often the diagnostic imaging test of choice in cases of mechanical snapping. We report 2 cases of painful snapping pes anserinus and highlight the value of dynamic ultrasound in making an accurate diagnosis so as to direct care.
2017: Journal of Clinical Imaging Science
https://www.readbyqxmd.com/read/29142232/tdp-43-misexpression-causes-defects-in-dendritic-growth
#11
Josiah J Herzog, Mugdha Deshpande, Leah Shapiro, Avital A Rodal, Suzanne Paradis
Amyotrophic Lateral Sclerosis (ALS) and Frontotemporal Dementia (FTD) share overlapping genetic causes and disease symptoms, and are linked neuropathologically by the RNA binding protein TDP-43 (TAR DNA binding protein-43 kDa). TDP-43 regulates RNA metabolism, trafficking, and localization of thousands of target genes. However, the cellular and molecular mechanisms by which dysfunction of TDP-43 contributes to disease pathogenesis and progression remain unclear. Severe changes in the structure of neuronal dendritic arbors disrupt proper circuit connectivity, which in turn could contribute to neurodegenerative disease...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29141063/novel-treatment-using-low-dose-naltrexone-for-lichen-planopilaris
#12
Lauren C Strazzulla, Lorena Avila, Kristen Lo Sicco, Jerry Shapiro
<p>Lichen planopilaris (LPP) is a variant of lichen planus that affects the scalp causing scarring hair loss. Patients also frequently experience symptoms of scalp itch, pain, and burning. To date, there are no long-term remittive nor curative therapies available. Low-dose naltrexone has anti-inflammatory properties and has recently been described in the context of treating autoimmune conditions. This retrospective medical record review describes four LPP patients treated with low-dose (3 milligrams per day) naltrexone...
November 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29140950/development-of-clinical-process-measures-for-pediatric-burn-care-understanding-variation-in-practice-patterns
#13
Lewis E Kazis, Robert L Sheridan, Gabriel D Shapiro, Austin F Lee, Matthew H Liang, Colleen M Ryan, Jeffrey C Schneider, Martha Lydon, Marina Soley-Bori, Lily A Sonis, Emily C Dore, Tina Palmieri, David Herndon, Walter Meyer, Petra Warner, Richard Kagan, Frederick J Stoddard, Michael Murphy, Ronald G Tompkins
BACKGROUND: There has been little systematic examination of variation in pediatric burn care clinical practices and its effect on outcomes. As a first step, current clinical care processes need to be operationally defined. The highly specialized burn care units of the Shriners Hospitals for Children system present an opportunity to describe the processes of care. The aim of this study was to develop a set of process-based measures for pediatric burn care and examine adherence to them by providers in a cohort of pediatric burn patients...
November 14, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29140536/birth-outcomes-among-first-nations-inuit-and-m%C3%A3-tis-populations
#14
Amanda J Sheppard, Gabriel D Shapiro, Tracey Bushnik, Russell Wilkins, Serenity Perry, Jay S Kaufman, Michael S Kramer, Seungmi Yang
BACKGROUND: First Nations, Inuit, and Métis are at higher risk of adverse birth outcomes than are non-Indigenous people. However, relatively little perinatal information is available at the national level for Indigenous people overall or for specific identity groups. DATA AND METHODS: This analysis describes and compares rates of preterm birth, small-for-gestational-age birth, large-for-gestational-age birth, stillbirth, and infant mortality (neonatal, postneonatal, and cause-specific) in a nationally representative sample of First Nations, Inuit, Métis, and non-Indigenous births...
November 15, 2017: Health Reports
https://www.readbyqxmd.com/read/29134771/detection-of-%C3%AE-amyloid-by-sialic-acid-coated-bovine-serum-albumin-magnetic-nanoparticles-in-a-mouse-model-of-alzheimer-s-disease
#15
Seyedmehdi Hossaini Nasr, Hovig Kouyoumdjian, Christiane Mallett, Sherif Ramadan, David C Zhu, Erik M Shapiro, Xuefei Huang
The accumulation and formation of β-amyloid (Aβ) plaques in the brain are distinctive pathological hallmarks of Alzheimer's disease (AD). Designing nanoparticle (NP) contrast agents capable of binding with Aβ highly selectively can potentially facilitate early detection of AD. However, a significant obstacle is the blood brain barrier (BBB), which can preclude the entrance of NPs into the brain for Aβ binding. In this work, bovine serum albumin (BSA) coated NPs are decorated with sialic acid (NP-BSAx -Sia) to overcome the challenges in Aβ imaging in vivo...
November 14, 2017: Small
https://www.readbyqxmd.com/read/29133555/the-frequency-and-mechanism-of-spontaneous-resistance-to-sulbactam-combined-with-the-novel-%C3%AE-lactamase-inhibitor-etx2514-in-clinical-isolates-of-acinetobacter-baumannii
#16
Sarah M McLeod, Adam B Shapiro, Samir H Moussa, Michele Johnstone, Robert E McLaughlin, Boudewijn L M de Jonge, Alita A Miller
The novel diazabicyclooctenone ETX2514 is a potent, broad spectrum serine β-lactamase inhibitor that restores sulbactam activity against resistant Acinetobacter baumannii. The frequency of spontaneous resistance to sulbactam-ETX2514 in clinical isolates was found to be 7.6x10(-10) to <9.0x10(-10) at 4x MIC and mapped to residues near the active site of PBP3. Purified mutant PBP3 proteins demonstrated reduced affinity for sulbactam. In a sulbactam-sensitive isolate, resistance also mapped to stringent response genes associated with resistance to PBP2 inhibitors, suggesting that, in addition to β-lactamase inhibition, ETX2514 may also enhance sulbactam activity in A...
November 13, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29132418/indoor-air-pollution-from-secondhand-tobacco-smoke-solid-fuels-and-kerosene-in-homes-with-active-tuberculosis-disease-in-south-africa
#17
Jessica L Elf, Onyinyechi Eke, Modiehi Rakgokong, Ebrahim Variava, Yudesh Baliram, Katlego Motlhaoleng, Limakatso Lebina, Adrienne E Shapiro, Patrick N Breysse, Jonathan E Golub, Neil Martinson
OBJECTIVES: Secondhand tobacco smoke (SHS), use of solid fuels, and kerosene may play an important role in perpetuating the tuberculosis (TB) epidemic. The purpose of this study was to explore the prevalence of household air pollution (HAP) from these sources in homes of someone with TB in a high HIV-prevalence setting. A convenience sample of homes and household members participating in an ongoing active case-finding study in Matlosana district townships surrounding Klerksdorp, South Africa were included...
November 13, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29128463/objective-outcome-measures-collecting-meaningful-data-on-alopecia-areata
#18
Elise A Olsen, Janet Roberts, Leonard Sperling, Antonella Tosti, Jerry Shapiro, Amy McMichael, Wilma Bergfeld, Valerie Callender, Paradi Mirmirani, Ken Washenik, David Whiting, George Cotsarelis, Maria Hordinsky
BACKGROUND: Although alopecia areata is a common disorder, it has no FDA approved treatment and evidence-based therapeutic data is lacking. OBJECTIVE: To develop guidelines for the diagnosis, evaluation, assessment, response criteria and endpoints for alopecia areata. METHODS: Literature review and expert opinion of a group of dermatologists specializing in hair disorders. RESULTS: Standardized methods of assessing and tracking hair loss and growth including new scoring techniques, response criteria and endpoints in alopecia areata are presented...
November 8, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/29128371/assessments-of-neurocognitive-and-behavioral-function-in-the-mucopolysaccharidoses
#19
REVIEW
Elsa G Shapiro, Maria L Escolar, Kathleen A Delaney, John J Mitchell
The mucopolysaccharidoses (MPS) are a group of rare, inherited lysosomal storage disorders in which accumulation of glycosaminoglycans (GAGs) leads to progressive tissue and organ dysfunction. In addition to a variety of somatic signs and symptoms, patients with rapidly progressing MPS I (Hurler), II, III, and VII can present with significant neurological manifestations, including impaired cognitive abilities, difficulties in language and speech, behavioral abnormalities, sleep problems, and/or seizures. Neurological symptoms have a substantial impact on the quality of life of MPS patients and their families...
September 15, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29127440/is-a-stepdown-unit-safe-for-patients-with-mild-traumatic-intracranial-hemorrhages
#20
L C Lamb, M M DiFiori, J Calafell, C H Comey, D S Shapiro, J M Feeney
PURPOSE: Traumatic brain injuries (TBIs) are a major source of disability in the United States. The ideal unit in the hospital for patients with mild traumatic intracranial hemorrhages (ICHs) has not been elucidated. We sought to investigate whether patients treated in the surgical stepdown area had worse outcomes than those treated in the surgical ICU. METHODS: We compared patients with ICHs and a Glasgow Coma Scale (GCS) upon admission of 14 or 15 who went to the ICU to those who went to the stepdown area from April 2014 to November 2016...
November 10, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
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