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https://www.readbyqxmd.com/read/27911441/sirt1-protects-the-heart-from-er-stress-induced-cell-death-through-eif2%C3%AE-deacetylation
#1
Alexandre Prola, Julie Pires Da Silva, Arnaud Guilbert, Lola Lecru, Jérôme Piquereau, Maxance Ribeiro, Philippe Mateo, Mélanie Gressette, Dominique Fortin, Céline Boursier, Cindy Gallerne, Anaïs Caillard, Jane-Lise Samuel, Hélène François, David A Sinclair, Pierre Eid, Renée Ventura-Clapier, Anne Garnier, Christophe Lemaire
Over the past decade, endoplasmic reticulum (ER) stress has emerged as an important mechanism involved in the pathogenesis of cardiovascular diseases including heart failure. Cardiac therapy based on ER stress modulation is viewed as a promising avenue toward effective therapies for the diseased heart. Here, we tested whether sirtuin-1 (SIRT1), a NAD(+)-dependent deacetylase, participates in modulating ER stress response in the heart. Using cardiomyocytes and adult-inducible SIRT1 knockout mice, we demonstrate that SIRT1 inhibition or deficiency increases ER stress-induced cardiac injury, whereas activation of SIRT1 by the SIRT1-activating compound STAC-3 is protective...
December 2, 2016: Cell Death and Differentiation
https://www.readbyqxmd.com/read/27911412/reproducible-arterial-denudation-injury-by-infrarenal-abdominal-aortic-clamping-in-a-murine-model
#2
Aditya S Shirali, Austin I McDonald, Julia J Mack, M Luisa Iruela-Arispe
Percutaneous vascular interventions uniformly result in arterial denudation injuries that subsequently lead to thrombosis and restenosis. These complications can be attributed to impairments in re-endothelialization within the wound margins. Yet, the cellular and molecular mechanisms of re-endothelialization remain to be defined. While several animal models to study re-endothelialization after arterial denudation are available, few are performed in the mouse because of surgical limitations. This undermines the opportunity to exploit transgenic mouse lines and investigate the contribution of specific genes to the process of re-endothelialization...
November 24, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911398/evaluation-of-bioenergetic-function-in-cerebral-vascular-endothelial-cells
#3
Stephanie L Rellick, Heng Hu, James W Simpkins, Xuefang Ren
The integrity of the blood-brain-barrier (BBB) is critical to prevent brain injury. Cerebral vascular endothelial (CVE) cells are one of the cell types that comprise the BBB; these cells have a very high-energy demand, which requires optimal mitochondrial function. In the case of disease or injury, the mitochondrial function in these cells can be altered, resulting in disease or the opening of the BBB. In this manuscript, we introduce a method to measure mitochondrial function in CVE cells by using whole, intact cells and a bioanalyzer...
November 19, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911395/preparation-of-primary-mixed-glial-cultures-from-adult-mouse-spinal-cord-tissue
#4
Jennifer T Malon, Ling Cao
It has been well-accepted that spinal cord glial responses contribute significantly to the development of neuropathic pain. Tremendous information regarding glial activities at the cellular and molecular levels has been obtained through in vitro cell culture systems. The in vitro systems utilized, mainly include primary glia derived from neonatal brain cortical tissue and immortalized cell lines. However, these systems may not reflect the characteristics of spinal cord glial cells in vivo. In order to further investigate the roles of spinal cord glial cells in the development of peripheral nerve injury-induced neuropathic pain using a culture system that better reflects the in vivo condition, our laboratory has developed a method to establish primary spinal cord mixed glial cultures from adult mice...
November 19, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911394/confirmation-of-myocardial-ischemia-and-reperfusion-injury-in-mice-using-surface-pad-electrocardiography
#5
Stephanie L C Scofield, Krishna Singh
Many animal models have been established for the study of myocardial remodeling and heart failure due to its status as the number one cause of mortality worldwide. In humans, a pathologic occlusion forms in a coronary artery and reperfusion of that occluded artery is considered essential to maintain viability of the myocardium at risk. Although essential for myocardial recovery, reperfusion of the ischemic myocardium creates its own tissue injury. The physiologic response and healing of an ischemia/reperfusion injury is different from a chronic occlusion injury...
November 24, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911382/a-simple-mechanical-procedure-to-create-limbal-stem-cell-deficiency-in-mouse
#6
Neda Afsharkhamseh, Elham Ghahari, Medi Eslani, Ali R Djalilian
Limbal stem cell deficiency (LSCD) is a state of malfunction or loss of limbal epithelial stem cells, after which the corneal epithelium is replaced with conjunctiva. Patients suffer from recurrent corneal defects, pain, inflammation, and loss of vision. Previously, a murine model of LSCD was described and compared to two other models. The goal was to produce a consistent mouse model of LSCD that both mimics the phenotype in humans and lasts long enough to make it possible to study the disease pathophysiology and to evaluate new treatments...
November 17, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911325/autonomic-nervous-system-dysfunctions-as-a-basis-for-a-predictive-model-of-risk-of%C3%A2-neurological-disorders-in-subjects-with%C3%A2-prior-history-of-traumatic-brain-injury-implications-in-alzheimer-s-disease
#7
Lap Ho, Marc Legere, Tongbin Li, Samara Levine, Ke Hao, Breanna Valcarcel, Giulio M Pasinetti
Autonomic dysfunction is very common in patients with dementia, and its presence might also help in differential diagnosis among dementia subtypes. Various central nervous system structures affected in Alzheimer's disease (AD) are also implicated in the central autonomic nervous system (ANS) regulation. For example, deficits in central cholinergic function in AD could likely lead to autonomic dysfunction. We recently developed a simple, readily applicable evaluation for monitoring ANS disturbances in response to traumatic brain injury (TBI)...
December 1, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27911316/risk-factors-for-mild-cognitive-impairment-in-german-primary-care-practices
#8
Louis Jacob, Jens Bohlken, Karel Kostev
BACKGROUND: Mild cognitive impairment (MCI) is a common mental disorder affecting around 16% of elderly people without dementia. MCI is considered an intermediate state between normal cognition and dementia. OBJECTIVE: To analyze risk factors for the development of MCI in German primary care practices. METHODS: In total, 3,604 MCI patients and 3,604 controls without MCI were included between January 2010 and December 2015. Several disorders potentially associated with MCI were determined...
December 1, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27911311/risk-factors-and-pathological-substrates-associated-with-agitation-aggression-in-alzheimer-s-disease-a-preliminary-study-using-nacc-data
#9
Simrin Sennik, Tom A Schweizer, Corinne E Fischer, David G Munoz
BACKGROUND: Neuropsychiatric symptoms are common manifestations of Alzheimer's disease (AD). A number of studies have targeted psychosis, i.e., hallucinations and delusions in AD, but few have assessed agitation/aggression in AD. OBJECTIVE: To investigate the risk factors and pathological substrates associated with presence [A(+)] and absence [A(-)] of agitation/aggression (A) in autopsy-confirmed AD. METHODS: Data was collected from the UDS data as of 2015 on the NACC database...
November 28, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27911285/the-relation-between-chondromalacia-patella-and-meniscal-tear-and-the-sulcus-angle-trochlear-depth-ratio-as-a-powerful-predictor
#10
Hatice Resorlu, Coskun Zateri, Gurdal Nusran, Ferdi Goksel, Nilufer Aylanc
PURPOSE: To investigate the relation between chondromalacia patella and the sulcus angle/trochlear depth ratio as a marker of trochlear morphology. In addition, we also planned to show the relationship between meniscus damage, subcutaneous adipose tissue thickness as a marker of obesity, patellar tilt angle and chondromalacia patella. METHODS: Patients with trauma, rheumatologic disease, a history of knee surgery and patellar variations such as patella alba and patella baja were excluded...
November 25, 2016: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/27911270/saha-and-or-mg132-reverse-the-aggressive-phenotypes-of-glioma-cells-an-in-vitro-and-vivo-study
#11
Xue-Feng Yang, Zhi-Juan Zhao, Jia-Jie Liu, Xiang-Hong Yang, Yang Gao, Shuang Zhao, Shuai Shi, Ke-Qiang Huang, Hua-Chuan Zheng
To elucidate the anti-tumor effects and molecular mechanisms of SAHA (a histone deacetylase inhibitor) and MG132 (a proteasome inhibitor) on the aggressive phenotypes of glioma cells, we treated U87 and U251 cells with SAHA or/and MG132, and detected phenotypes' assays with phenotype-related molecules examined. It was found that SAHA or/and MG132 treatment suppressed proliferation in both concentration- and time-dependent manners, inhibited energy metabolism, migration, invasion and lamellipodia formation, and induced G2 arrest and apoptosis in the glioma cells...
November 29, 2016: Oncotarget
https://www.readbyqxmd.com/read/27911234/ventriculostomy-associated-hemorrhage-a-risk-assessment-by-radiographic-simulation
#12
Faith C Robertson, Muhammad M Abd-El-Barr, Srinivasan Mukundan, William B Gormley
OBJECTIVE Ventriculostomy entry sites are commonly selected by freehand estimation of Kocher's point or approximations from skull landmarks and a trajectory toward the ipsilateral frontal horn of the lateral ventricles. A recognized ventriculostomy complication is intracranial hemorrhage from cortical vessel damage; reported rates range from 1% to 41%. In this report, the authors assess hemorrhagic risk by simulating traditional ventriculostomy trajectories and using CT angiography (CTA) with venography (CTV) data to identify potential complications, specifically from cortical draining veins...
December 2, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27911168/effectiveness-of-communication-specific-coping-intervention-for-adults-with-traumatic-brain-injury-preliminary-results
#13
Jacinta M Douglas, Lucy Knox, Carren De Maio, Helen Bridge, Melanie Drummond, Joanne Whiteoak
People with traumatic brain injury (TBI) describe everyday interactions as a long-term challenge frequently associated with ongoing stress. Communication-specific Coping Intervention (CommCope-I) is a new treatment developed to target coping in the context of communication breakdown. The intervention incorporates principles of cognitive behavioural therapy, self-coaching and context-sensitive social communication therapy. The purpose of this study was to examine the effectiveness of CommCope-I in a group of adults with severe TBI and ongoing functional communication difficulties...
December 2, 2016: Neuropsychological Rehabilitation
https://www.readbyqxmd.com/read/27911073/reducing-risky-alcohol-use-what-health-care-systems-can-do
#14
Amity E Quinn, Mary Brolin, Maureen T Stewart, Brooke Evans, Constance Horgan
Risky, non-dependent alcohol use is prevalent in the United States, affecting 25% of adults (Centers for Disease Control and Prevention, 2014b). Massachusetts has higher rates of alcohol use and binge drinking than most states (Substance Abuse and Mental Health Services Administration, 2015). Serious physical, social, and economic consequences result. Excessive alcohol use contributes to cancer, cardiovascular disease, sleep disorders, birth defects, motor vehicle injuries, and suicide, and it complicates management of chronic illnesses (Green, McKnight-Eily, Tan, Mejia, & Denny, 2016; Laramee et al...
April 27, 2016: Issue Brief
https://www.readbyqxmd.com/read/27911071/severe-brain-injury-in-massachusetts-assessing-the-continuum-of-care
#15
Laura Lorenz, Gabrielle Katz
Acquired brain injury (ABI) is a major public health problem in Massachusetts (Hackman et al, 2014) and includes traumatic brain injury (TBI), stroke, ABI-related infectious diseases, metabolic disorders affecting the central nervous system (brain and spinal cord), and brain tumor. Advances in emergency medical care and neurosurgery mean that more people are surviving severe traumatic brain injury (Trexler et al, 2014). Yet many patients with severe TBI in particular, are not receiving inpatient services after initial treatment (Hackman et al, 2014; CDC, 2014) or later that are known to be effective (Malec & Kean, 2015; Lewis & Horn, 2015; BI Commission, 2011; Kolakowsky-Hayner et al, 2000; Interviews)...
December 10, 2015: Issue Brief
https://www.readbyqxmd.com/read/27911066/-conservative-management-of-liver-trauma-and-its-complications-current-gold-standard
#16
R Gander, J A Molino, S Santiago, A Laín, G Guillén, C Giné, G Royo, S López, M Pérez, I Díez, S Cañadas, J Lloret, J Bueno
INTRODUCTION: The liver is the second most frequently involved organ in abdominal trauma in children. The aim of this study was to review the characteristics of liver traumas (LT) in children, its treatment and complications. MATERIAL AND METHODS: Retrospective study of patients with LT treated between 2010-2014. We analyzed data regarding diagnosis, conservative management (CM), complications and treatment. RESULTS: Twenty-four patients of LT with a mean age of 9...
January 25, 2016: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
https://www.readbyqxmd.com/read/27910995/a-diffusion-tensor-magnetic-resonance-imaging-study-of-paediatric-patients-with-severe-non-traumatic-brain-injury
#17
Erika Molteni, Maria A Rocca, Sandra Strazzer, Elisabetta Pagani, Katia Colombo, Filippo Arrigoni, Giacomo Boffa, Massimiliano Copetti, Valentina Pastore, Massimo Filippi
AIM: In this observational study using 3T magnetic resonance imaging (MRI) and diffusion tensor, we investigated the differential effects of pathology, stage of disease, state of consciousness, and aetiology on the modifications of supra- and infra-tentorial white matter tracts and their correlations with clinical scales in paediatric patients with severe non-traumatic brain injury. METHOD: Diffusion tensor magnetic resonance imaging (DT-MRI) was obtained from seven children with unresponsive wakefulness syndrome (UWS; five males, two females; age at event 5y; standard deviation [SD] 2y 1mo), six children in a minimally conscious state (MCS; three males, three females; age at event 5y 10mo; SD 5y), and 10 healthy children as controls(two males, eight females; age at study 10y 10mo; SD 2y 10mo)...
December 2, 2016: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/27910952/protective-effects-of-ginsenoside-rg1-on-intestinal-ischemia-reperfusion-injury-induced-oxidative-stress-and-apoptosis-via-activation-of-the-wnt-%C3%AE-catenin-pathway
#18
Guo Zu, Jing Guo, Ningwei Che, Tingting Zhou, Xiangwen Zhang
Ginsenoside Rg1 (Rg1) is one of the major bioactive ingredients in Panax ginseng, and it attenuates inflammation and apoptosis. The aims of our study were to explore the potential of Rg1 for the treatment of intestinal I/R injury and to determine whether the protective effects of Rg1 were exerted through the Wnt/β-catenin signaling pathway. In this study, Rg1 treatment ameliorated inflammatory factors, ROS and apoptosis that were induced by intestinal I/R injury. Cell viability was increased and cell apoptosis was decreased with Rg1 pretreatment following hypoxia/reoxygenation (H/R) in the in vitro study...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910949/ascl3-transcription-factor-marks-a-distinct-progenitor-lineage-for-non-neuronal-support-cells-in-the-olfactory-epithelium
#19
Pei-Lun Weng, Mridula Vinjamuri, Catherine E Ovitt
The olfactory epithelium (OE) is composed of olfactory sensory neurons (OSNs), sustentacular supporting cells, and several types of non-neuronal cells. Stem and progenitor cells are located basally, and are the source of all cell types needed to maintain OE homeostasis. Here, we report that Ascl3, a basic helix-loop-helix transcription factor, is expressed in the developing OE. Lineage tracing experiments demonstrate that the non-neuronal microvillar cells and Bowman's glands are exclusively derived from Ascl3(+) progenitor cells in the OE during development...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910911/human-mesenchymal-stem-cells-program-macrophage-plasticity-by-altering-their-metabolic-status-via-a-pge2-dependent-mechanism
#20
Anoop Babu Vasandan, Sowmya Jahnavi, Chandanala Shashank, Priya Prasad, Anujith Kumar, S Jyothi Prasanna
Mesenchymal stem cells (MSCs) are speculated to act at macrophage-injury interfaces to mediate efficient repair. To explore this facet in-depth this study evaluates the influence of MSCs on human macrophages existing in distinct functional states. MSCs promoted macrophage differentiation, enhanced respiratory burst and potentiated microbicidal responses in naïve macrophages (Mφ). Functional attenuation of inflammatory M1 macrophages was associated with a concomitant shift towards alternatively activated M2 state in MSC-M1 co-cultures...
December 2, 2016: Scientific Reports
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