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Valerie Jeanneret, Juan P Ospina, Ariel Diaz, Luis G Manrique, Paola Merino, Laura Gutierrez, Enrique Torre, Fang Wu, Lihong Cheng, Manuel Yepes
Cerebral ischemia causes the presynaptic release of tissue-type plasminogen activator (tPA). The postsynaptic density (PSD) is a postsynaptic structure that provides a matrix where signaling transduction of excitatory synapses takes place. The postsynaptic density protein-95 (PSD-95) is the most abundant scaffolding protein in the postsynaptic density (PSD), where it modulates the postsynaptic response to the presynaptic release of glutamate by regulating the anchoring of glutamate receptors to the PSD. We found that tPA induces the local translation of PSD-95 mRNA and the subsequent recruitment of PSD-95 protein to the PSD, via plasminogen-independent activation of TrkB receptors...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
Niki Oikonomopoulou, Ana Belén Martínez López, Javier Urbano Villaescusa, María Del Carmen Molina Molina, Laura Butragueño Laiseca, Daniel Barraca Nuñez, Olalla Álvarez Blanco
INTRODUCTION: Acute tubulointerstitial nephritis (ATIN) is a rare entity in the pediatric age. It is de fined by the infiltration of the renal parenchyma by mononuclear and/or polynuclear cells with se condary involvement of the tubules, without glomerular injury. It can be triggered by infections or immunological diseases, drugs like NSAIDs or be of idiopathic origin. OBJECTIVE: To raise awareness among pediatricians about the prescription of NSAIDs, especially to patients of less than a year old, since they can provoke renal damage...
December 2017: Revista Chilena de Pediatría
Alain Cunqueiro, Meir H Scheinfeld
Intracranial gas is commonly detected on neuroimaging. The recognition of this finding can at first blush be unsettling. Being able to localize this gas to a specific compartment: intraarterial, intravenous, intraparenchymal, subdural, epidural, subarachnoid and intraventricular, is the first step in determining the importance of the gas. Determination of the route of entry: through the skull, extension from a paranasal sinus or the mastoid air cells, via the spine, or trans-vascular, is the other important factor in determining potential consequences...
March 15, 2018: Emergency Radiology
Naoaki Rikihisa, Mai Tominaga, Shoji Watanabe, Nobuyuki Mitsukawa, Yoshiaki Saito, Hiromi Sakai
Our previous study proposed using artificial blood cells (hemoglobin vesicles, Hb-Vs) as photosensitizers in dye laser treatment for port-wine stains (PWSs). Dye laser photons are absorbed by red blood cells (RBCs) and hemoglobin (Hb) mixture, which potentially produce more heat and photocoagulation and effectively destroy endothelial cells. Hb-Vs combination therapy will improve clinical outcomes of dye laser treatment for PWSs because very small vessels do not contain sufficient RBCs and they are poor absorbers/heaters of lasers...
March 15, 2018: Lasers in Medical Science
Christopher J Rendina
Purpose: To present a case that benefited from utilizing hyperbaric oxygen therapy in conjunction with antibiotics for a non-healing mandibular fracture that was highly suspicious of osteomyelitis. Also, to discuss research set forth by Undersea and Hyperbaric Medical Society that supports the use hyperbaric oxygen in such cases. Case: A 25-year-old male status post fist to face resulting in bilateral mandibular fracture. He underwent two surgeries in an attempt to plate the fracture with the assistance of a bone graft...
March 13, 2018: Military Medicine
Nicholette D Palmer, Hayrettin Okut, Fang-Chi Hsu, Maggie C Y Ng, Yii-Der Ida Chen, Mark O Goodarzi, Kent D Taylor, Jill M Norris, Carlos Lorenzo, Jerome I Rotter, Richard N Bergman, Carl D Langefeld, Lynne E Wagenknecht, Donald W Bowden
Context: Metabolomics provides a biochemical fingerprint which, when coupled with clinical phenotypes, can provide insight into physiological processes and disease. Objective: Survey metabolites associated with dynamic and basal measures of glucose homeostasis. Design: Analysis of 733 serum metabolites from the Insulin Resistance Atherosclerosis Family Study. Setting: Community-based. Participants: 1111 Mexican Americans...
March 13, 2018: Journal of Clinical Endocrinology and Metabolism
Marion Bienert, Niklas Plange, Andreas Remky, Kay Oliver Arend, David Kuerten
Purpose: Ischemic ocular disorders may be treated by hypervolemic hemodilution. The presumed therapeutic benefit is based on a volume effect and improved rheological factors. The aim was to investigate the acute effect of intravenous hydroxyethyl starch on retrobulbar hemodynamics in patients with nonarteritic anterior ischemic optic neuropathy (NAION). Methods: 24 patients with acute NAION were included. Retrobulbar hemodynamics were measured using color Doppler imaging before and 15 min after intravenous infusion of 250 cc 10% hydroxyethyl starch (HES)...
2018: BioMed Research International
Dengfeng Ding, Shiyuan Xu, Hongfei Zhang, Wei Zhao, Xueping Zhang, Yuanxu Jiang, Ping Wang, Zhongliang Dai, Junzhi Zhang
The aim of the present study was to investigate the effects of 3-methyladenine (3-MA) and dexmedetomidine (DEX) pretreatment on lipopolysaccharide (LPS)-induced acute lung injury (ALI) and the potential mechanism underlying the effects. LPS was instilled into the trachea of BALB/c mice to induce the ALI model. Solutions of 3-MA or DEX were intravenously injected into the mice 1 h later to establish the 3-MA and DEX groups. On days 1, 3 and 5 after the injections, arterial blood gas analysis was conducted, and the lung wet-dry weight ratio (W/D) was determined...
April 2018: Experimental and Therapeutic Medicine
Yuan-Jun Xia, Hong Xia, Ling Chen, Qing-Shui Ying, Xiang Yu, Li-Hua Li, Jian-Hua Wang, Ying Zhang
Bone morphogenetic protein-2 (BMP-2) serves an important role in the development of bone and cartilage. However, administration of BMP-2 protein alone by intravenous delivery is not very effective. Sustained delivery of stabilized BMP-2 by carriers has been proven necessary to improve the osteogenesis effect of BMP-2. The present study constructed a novel drug delivery system using dextran sulfate (DS)-chitosan (CS) microspheres and investigated the efficiency of the delivery system on recombinant human bone morphogenetic protein (rhBMP-2)...
April 2018: Experimental and Therapeutic Medicine
Jaime S Rosa, Van B Vuong, Orly Haskin, Anne Y Liu
Background: Recombinant human erythropoietin, such as epoetin alfa and darbepoetin alfa, is an important therapy for anemia due to chronic renal failure. Allergy to recombinant human erythropoietin and the need for desensitization are rare. Case presentation: We report here a novel epoetin alfa outpatient desensitization protocol in a girl who developed delayed cutaneous hypersensitivity to subcutaneous epoetin alfa and intravenous darbepoetin alfa. An initial attempt at traditional epoetin alfa desensitization failed, so we created a slower 17-day outpatient desensitization that succeeded and allowed treatment continuation...
2018: Allergy, Asthma, and Clinical Immunology
Ke-Wei Tian, Yuan-Yuan Zhang, Hong Jiang, Shu Han
The placenta has emerged as an attractive source of mesenchymal stem cells (MSCs) because of the absence of ethical issues, non-invasive access, and abundant yield. However, inflammatory cell invasion into grafts negatively impacts the survival and efficacy of transplanted cells. Previous studies have shown that synthetic C16 peptide can competitively block the transmigration of leukocytes into the central nerve system, while angiopoietin-1 (Ang-1) can inhibit inflammation-induced blood vessel leakage and inflammatory cell infiltration in rats with experimental allergic encephalomyelitis (EAE)...
March 15, 2018: Scientific Reports
Sini M Kinnunen, Marja Tölli, Mika J Välimäki, Erhe Gao, Zoltan Szabo, Jaana Rysä, Mónica P A Ferreira, Pauli Ohukainen, Raisa Serpi, Alexandra Correia, Ermei Mäkilä, Jarno Salonen, Jouni Hirvonen, Hélder A Santos, Heikki Ruskoaho
Transcription factors are fundamental regulators of gene transcription, and many diseases, such as heart diseases, are associated with deregulation of transcriptional networks. In the adult heart, zinc-finger transcription factor GATA4 is a critical regulator of cardiac repair and remodelling. Previous studies also suggest that NKX2-5 plays function role as a cofactor of GATA4. We have recently reported the identification of small molecules that either inhibit or enhance the GATA4-NKX2-5 transcriptional synergy...
March 15, 2018: Scientific Reports
Young Dong Yu, Jin Ho Hwang, Young Eun Seo, Byung Do Song, Yeon Soo Jung, Dong Hwan Lee, Sung Kyu Hong, Seok-Soo Byun, Sang Eun Lee, Jong Jin Oh
This study aimed to evaluate the effects of ketorolac, a commonly used non-steroidal anti-inflammatory drug (NSAID) as patient controlled intravenous infusion analgesia (PCIA) for the patients underwent radical cystectomy (RC) due to bladder cancer regarding post-operational indices of recovery. Total seventy patients who underwent radical cystectomy for the treatment of bladder cancer were included in the study. 35 patients received ketorolac as PCIA (NSAIDS group) and 35 patients had morphine infusion as PCIA (morphine group)...
March 15, 2018: Scientific Reports
Bryan Padraig Finn, Brian Fraser, Susan M O'Connell
Diabetic ketoacidosis (DKA) is one of the most common causes of morbidity and mortality in new-onset type 1 diabetes (T1D). Supraventricular tachycardia (SVT), however, is a very rare complication of DKA. We present the case of a patient with new-onset T1D who presented with DKA. He received intravenous fluid resuscitation, insulin and potassium supplementation and subsequently developed SVT, confirmed on a 12-lead electrocardiograph despite a structurally normal heart. Vagal manoeuvres and adenosine failed to restore sinus rhythm, but flecainide was successful...
March 15, 2018: BMJ Case Reports
Sudha S Shankar, R Ravi Shankar, Lori A Mixson, Deborah L Miller, Barnali Pramanik, Amy K O'Dowd, Donna M Williams, Clay B Frederick, Chan R Beals, S Aubrey Stoch, Helmut O Steinberg, David E Kelley
Oxyntomodulin (OXM), an enteroendocrine hormone, causes appetite suppression, increased energy expenditure, and weight loss in obese humans via activation of GLP-1 and glucagon receptors. However, the effects of OXM on glucose homeostasis remain ill-defined. To address this gap, we evaluated the effects of an intravenous (IV) infusion of native OXM on insulin secretory rates (ISR) and glycemic excursion in a graded glucose infusion (GGI) procedure in two separate randomized, placebo-controlled, single dose crossover trials in 12 overweight and obese subjects without diabetes, and in 12 obese subjects with Type 2 diabetes (T2DM) respectively, using the GLP-1 analog, liraglutide as a comparator in the T2DM...
March 15, 2018: Diabetes
Marina Chiara Garassino, Byoung-Chul Cho, Joo-Hang Kim, Julien Mazières, Johan Vansteenkiste, Hervé Lena, Jesus Corral Jaime, Jhanelle E Gray, John Powderly, Christos Chouaid, Paolo Bidoli, Paul Wheatley-Price, Keunchil Park, Ross A Soo, Yifan Huang, Catherine Wadsworth, Phillip A Dennis, Naiyer A Rizvi
BACKGROUND: Immune checkpoint inhibitors are a new standard of care for patients with advanced non-small-cell lung cancer (NSCLC) without EGFR tyrosine kinase or anaplastic lymphoma kinase (ALK) genetic aberrations (EGFR-/ALK-), but clinical benefit in patients with EGFR mutations or ALK rearrangements (EGFR+/ALK+) has not been shown. We assessed the effect of durvalumab (anti-PD-L1) treatment in three cohorts of patients with NSCLC defined by EGFR/ALK status and tumour expression of PD-L1...
March 12, 2018: Lancet Oncology
Raju Kapoor, Pei-Ran Ho, Nolan Campbell, Ih Chang, Aaron Deykin, Fiona Forrestal, Nisha Lucas, Bei Yu, Douglas L Arnold, Mark S Freedman, Myla D Goldman, Hans-Peter Hartung, Eva Kubala Havrdová, Douglas Jeffery, Aaron Miller, Finn Sellebjerg, Diego Cadavid, Dan Mikol, Deborah Steiner
BACKGROUND: Although several disease-modifying treatments are available for relapsing multiple sclerosis, treatment effects have been more modest in progressive multiple sclerosis and have been observed particularly in actively relapsing subgroups or those with lesion activity on imaging. We sought to assess whether natalizumab slows disease progression in secondary progressive multiple sclerosis, independent of relapses. METHODS: ASCEND was a phase 3, randomised, double-blind, placebo-controlled trial (part 1) with an optional 2 year open-label extension (part 2)...
March 12, 2018: Lancet Neurology
William J Meurer, Bradley Barth, Michael Abraham, Jerome Hoffman, Gary M Vilke, Gerard DeMers
BACKGROUND: Stroke treatment is a continuum that begins with the rapid identification of symptoms and treatment with transition to successful rehabilitation. Therapies for acute ischemic stroke (AIS) may vary based on anatomic location, interval from symptom onset, and coexisting health conditions. Successful therapy requires a seamless systematic approach with coordination from prehospital environment through acute management at medical facilities to disposition and long-term care of the patient...
March 12, 2018: Journal of Emergency Medicine
Valérie A Zeller, Valérie-Anne Letembet, Vanina A Meyssonnier, Beate Heym, Jean-Marc Ziza, Simon D Marmor
BACKGROUND: Cutibacterium spp. (formerly Propionibacterium) are slow-growing cutaneous anaerobic commensals, rarely reported in prosthetic joint infections (PJIs). We describe epidemiological, clinical, biological, and radiological characteristics of 15 Cutibacterium avidum PJIs, their treatments, and outcomes. METHODS: This study is an observational, monocenter study (January 2004 to April 2017), with comparison of C avidum vs Cutibacterium acnes (n = 40) PJI characteristics...
February 12, 2018: Journal of Arthroplasty
Bakary Sanneh, Alhagie Papa Sey, Minesh Shah, Jacqueline Tate, Mariama Sonko, Sheriffo Jagne, ModouLamin Jarju, Dawda Sowe, Makie Taal, Adam Cohen, Umesh Parashar, Jason M Mwenda
INTRODUCTION: Rotavirus vaccines protect against the leading cause of severe childhood diarrhoea, and have been introduced in many low-income African countries. The Gambia introducedRotateq® (RV5) into their national immunization program in 2013. We revieweddata from an active rotavirus sentinel surveillancesitefor early evidence of vaccine impact. METHODS: We compared rotavirus prevalence in diarrhoeal stool in children< 5 years of age admittedat the Edward Francis Small Teaching Hospital sentinel surveillance site before (2013) andafterRV5 introduction (2015-2016) in the Gambia...
March 12, 2018: Vaccine
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