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Jaime Gómez-Ramírez, Shelagh Freedman, Diego Mateos, José Luis Pérez Velázquez, Taufik A Valiante
A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
March 14, 2018: Scientific Reports
João Pedro Ferreira, Nicolas Girerd, John Gregson, Ichraq Latar, Abhinav Sharma, Marc A Pfeffer, John J V McMurray, Azmil H Abdul-Rahim, Bertram Pitt, Kenneth Dickstein, Patrick Rossignol, Faiez Zannad
BACKGROUND: Stroke can occur after myocardial infarction (MI) in the absence of atrial fibrillation (AF). OBJECTIVES: This study sought to identify risk factors (excluding AF) for the occurrence of stroke and to develop a calibrated and validated stroke risk score in patients with MI and heart failure (HF) and/or systolic dysfunction. METHODS: The datasets included in this pooling initiative were derived from 4 trials: CAPRICORN (Effect of Carvedilol on Outcome After Myocardial Infarction in Patients With Left Ventricular Dysfunction), OPTIMAAL (Optimal Trial in Myocardial Infarction With Angiotensin II Antagonist Losartan), VALIANT (Valsartan in Acute Myocardial Infarction Trial), and EPHESUS (Eplerenone Post-Acute Myocardial Infarction Heart Failure Efficacy and Survival Study); EPHESUS was used for external validation...
February 20, 2018: Journal of the American College of Cardiology
Vito Valiante
The fungal cell wall is the external and first layer that fungi use to interact with the environment. Every stress signal, before being translated into an appropriate stress response, needs to overtake this layer. Many signaling pathways are involved in translating stress signals, but the cell wall integrity (CWI) signaling pathway is the one responsible for the maintenance and biosynthesis of the fungal cell wall. In fungi, the CWI signal is composed of a mitogen-activated protein kinase (MAPK) module. After the start of the phosphorylation cascade, the CWI signal induces the expression of cell-wall-related genes...
December 6, 2017: Journal of Fungi (Basel, Switzerland)
Josh A Sibille, Joel P Harding, Jocelyn K Ballast, Mohammad Hooshmand, Jeko M Madjarov, Frank R Arko
A 60-year-old woman involved in a motor vehicle collision presented with a traumatic pseudoaneurysm of the innominate artery origin in addition to multiple concomitant injuries. She was classified as a high-risk candidate for open repair. An experimental thoracic branched graft device was used for coverage of the injury with the addition of a right carotid-to-left carotid-to-left subclavian artery bypass. Follow-up imaging showed resolution of the pseudoaneurysm and patency of her bypass grafts. This is the first described use of the Mona LSA Branch Thoracic Stent Graft System (Medtronic, Minneapolis, Minn) in the innominate artery...
March 2017: Journal of Vascular Surgery Cases and Innovative Techniques
João Pedro Ferreira, Kevin Duarte, Marc A Pfeffer, John J V McMurray, Bertram Pitt, Kenneth Dickstein, Faiez Zannad, Patrick Rossignol
BACKGROUND: Observational data have described the association of blood pressure (BP) with mortality as 'J-shaped', meaning that mortality rates increase below a certain BP threshold. We aimed to analyse the associations between BP and prognosis in a population of acute myocardial infarction (MI) patients with heart failure (HF) and/or systolic dysfunction. METHODS AND RESULTS: The datasets included in this pooling initiative are derived from four trials: CAPRICORN, EPHESUS, OPTIMAAL, and VALIANT...
January 4, 2018: European Journal of Heart Failure
Sergey I Nikolaev, Sandra Vetiska, Ximena Bonilla, Emilie Boudreau, Suvi Jauhiainen, Behnam Rezai Jahromi, Nadiya Khyzha, Peter V DiStefano, Santeri Suutarinen, Tim-Rasmus Kiehl, Vitor Mendes Pereira, Alexander M Herman, Timo Krings, Hugo Andrade-Barazarte, Takyee Tung, Taufik Valiante, Gelareh Zadeh, Mike Tymianski, Tuomas Rauramaa, Seppo Ylä-Herttuala, Joshua D Wythe, Stylianos E Antonarakis, Juhana Frösen, Jason E Fish, Ivan Radovanovic
BACKGROUND: Sporadic arteriovenous malformations of the brain, which are morphologically abnormal connections between arteries and veins in the brain vasculature, are a leading cause of hemorrhagic stroke in young adults and children. The genetic cause of this rare focal disorder is unknown. METHODS: We analyzed tissue and blood samples from patients with arteriovenous malformations of the brain to detect somatic mutations. We performed exome DNA sequencing of tissue samples of arteriovenous malformations of the brain from 26 patients in the main study group and of paired blood samples from 17 of those patients...
January 18, 2018: New England Journal of Medicine
Joseph R Francica, Daniel E Zak, Caitlyn Linde, Emilio Siena, Carrie Johnson, Michal Juraska, Nicole L Yates, Bronwyn Gunn, Ennio De Gregorio, Barbara J Flynn, Nicholas M Valiante, Padma Malyala, Susan W Barnett, Pampi Sarkar, Manmohan Singh, Siddhartha Jain, Margaret Ackerman, Munir Alam, Guido Ferrari, Georgia D Tomaras, Derek T O'Hagan, Alan Aderem, Galit Alter, Robert A Seder
Adjuvants have a critical role for improving vaccine efficacy against many pathogens, including HIV. Here, using transcriptional RNA profiling and systems serology, we assessed how distinct innate pathways altered HIV-specific antibody responses in nonhuman primates (NHPs) using 8 clinically based adjuvants. NHPs were immunized with a glycoprotein 140 HIV envelope protein (Env) and insoluble aluminum salts (alum), MF59, or adjuvant nanoemulsion (ANE) coformulated with or without Toll-like receptor 4 (TLR4) and 7 agonists...
November 28, 2017: Blood Advances
Jiechang Zhu, Lujing Zhao, Xiangchen Dai, Yudong Luo, Hailun Fan, Zhou Feng, Yiwei Zhang, Fanguo Hu
OBJECTIVES: The aim was to evaluate the early results of fenestrated thoracic endovascular aortic repair (fTEVAR) using physician modified stent grafts (PMSGs) to revascularise aortic branches for acute type B aortic dissection (ABAD) with unfavourable proximal landing zone. METHODS: Twenty consecutive patients who underwent fenestrated TEVAR using PMSGs between November 2015 and December 2016 were retrospectively reviewed. Pre-, intra-, and post-operative clinical data were recorded...
February 2018: European Journal of Vascular and Endovascular Surgery
F A Khabirov, T I Khaibullin, E V Granatov
AIM: To evaluate the efficacy and safety of neuromultivit (valiant, Russia) as add-on to the basic therapy of vertebrogenic radiculopathy (VR) L5-S1. MATERIAL AND METHODS: The open clinical trial included 100 patients with VR L5-S1 randomized into 2 groups. In group 1, patients received neuromultivit and basic therapy; in group 2 only basic therapy. Treatment efficacy was assessed by the dynamics of regression of pain intensity on the visual analogue scale (VAS), McGill pain questionnaire (MGPQ), Aberdeen back pain scale (ABPS), the Quebec Back Pain Disability Scale (QBPDS), the dynamics of neurologic symptoms, the need for additional treatment with NSAID...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
Silvia Majore, Maria Carmela Bonaccorsi di Patti, Michele Valiante, Fabio Polticelli, Andrea Cortese, Sabrina Di Bartolomeo, Carmelilia De Bernardo, Marianna De Muro, Fiorella Faienza, Francesca Clementina Radio, Paola Grammatico, Giovanni Musci
Mutations of SLC40A1 encoding ferroportin (Fpn), the unique cellular iron exporter, severely affect iron homeostasis causing type 4 hereditary hemochromatosis, an autosomal dominant iron overload condition with variable phenotypic manifestations. This disease can be classified as type 4A, better known as "ferroportin disease", which is due to "loss of function" mutations that lead to decreased iron export from cells, or as type 4B hemochromatosis, which is caused by "gain of function" mutations, conferring partial or complete resistance to hepcidin-mediated Fpn degradation...
February 2018: Biochimica et Biophysica Acta
Jaime Gómez-Ramírez, Shelagh Freedman, Diego Mateos, José Luis Pérez Velázquez, Taufik Valiante
This paper addresses a fundamental question, are eyes closed and eyes open resting states equivalent baseline conditions, or do they have consistently different electrophysiological signatures? We compare the functional connectivity patterns in an eyes closed resting state with an eyes open resting state to investigate the alpha desynchronization hypothesis. The change in functional connectivity from eyes closed to eyes open, is here, for the first time, studied with intracranial recordings. We perform network connectivity analysis in iEEG and we find that phase-based connectivity is sensitive to the transition from eyes closed to eyes open only in interhemispheral and frontal electrodes...
November 15, 2017: Scientific Reports
Sarah Voll, Taufik A Valiante
We expand on the discourse related to nature surrounding Canadian medical training and the CanMEDS flower. We advance the notion that a major contributor to burnout is the increasing complexity and segregation of not only the medical profession, but society as a whole, leading to choice overload and an overemphasis on complex, data driven, rational decision making. We then propose that the key to watering CanMEDS flowers and preventing physician burnout lies in getting back to the basics of human behaviour.
June 2017: Canadian Medical Education Journal
Derek J Mattern, Vito Valiante, Fabian Horn, Lutz Petzke, Axel A Brakhage
Filamentous fungi produce numerous high-value natural products (NPs). The biosynthetic genes for NPs are normally clustered in the genome. A valuable NP class is represented by the insecticidal austinoids. We previously determined their biosynthesis in the fungus Aspergillus calidoustus. After further computational analysis looking into the austinoid gene clusters in two additional distantly related fungi, Aspergillus nidulans and Penicillium brasilianum, a rearrangement of the genes was observed that corresponded to the diverse austinoid derivatives produced by each strain...
November 2, 2017: ACS Chemical Biology
Gerard O'Leary, Taufik A Valiante, Roman Genov
Growing evidence suggests that cross-frequency coupling (CFC) is a key mechanism in neuronal computation, communication, and learning in the brain. Abnormal CFC has been implicated in pathological brain states such as epilepsy and Parkinson's disease. A reduction in excessive coupling has been shown in effective neuromodulation treatments, suggesting that CFC may be a useful feedback measure in closed-loop neural stimulation devices. However, processing latency limits the responsiveness of such systems. A VLSI architecture is presented which implements three selectable measures of CFC to enable the application specific trade-off between low-latency and high-accuracy processing...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Ramesh Kumar, Madhav Bhatia, Kalpana Pai
Infection in humans with Leishmania manifests into a spectrum of diseases. The manifestations of the disease depend on the resultant evasion of the parasite to immune responses namely macrophages, which is an exclusive host of leishmania. The B cells valiantly mount antibody responses, however to no avail as the Leishmania parasites occupy the intracellular niches of the macrophages. Extensive studies have been documented on the role of cell-mediated immunity (CMI) in protection and counter survival strategies of the parasites leading to down-regulation of CMI...
October 1, 2017: Clinical Laboratory
Mir Hatef Shojaei, Mohammad Alavinia, B Catharine Craven, Christiana L Cheng, Tova Plashkes, Tian Shen, Nader Fallah, Suzanne Humphreys, Colleen O'Connell, Angelo Gary Linassi, Chester Ho, Christine Short, Karen Ethans, Rebecca Charbonneau, Jerome Paquet, Vanessa K Noonan, Julio C Furlan, Michael G Fehlings, B Catharine Craven, Jirapat Likitlersuang, Elizabeth Sumitro, Sukhvinder Kalsi-Ryan, José Zariffa, Dalton Wolfe, Stephanie Cornell, Julie Gagliardi, Stephanie Marrocco, Carly S Rivers, Nader Nader Fallah, Vanessa K Noonan, David Whitehurst, Carolyn Schwartz, Joel Finkelstein, B Catharine Craven, Karen Ethans, Colleen O'Connell, Catherine Truchon, Chester Ho, A Gary Linassi, Christine Short, Eve Tsai, Brian Drew, Henry Ahn, Marcel F Dvorak, Jérôme Paquet, Michael G Fehlings, Luc Noreau, Katie Lenz, K Alysse Bailey, David Allison, David Ditor, Justine Baron, Jennifer Tomasone, Dorothyann Curran, Toba Miller, Jeremy Grimshaw, Bastien Moineau, Milad Alizadeh-Meghrazi, Gabriel Stefan, Kei Masani, Milos R Popovic, Elizabeth Sumitro, Jirapat Likitlersuang, Sukhvinder Kalsi-Ryan, José Zariffa, Martha G Garcia-Garcia, Cesar Marquez-Chin, Milos R Popovic, Julio C Furlan, Sivakumar Gulasingam, B Catharine Craven, Julio C Furlan, Sivakumar Gulasingam, B Catharine Craven, Alia Khan, Clara Pujol, Mark Laylor, Nikola Unic, Maureen Pakosh, Kristin Musselman, Louise M Brisbois, B Catharine Craven, Mary C Verrier, Maryleen K Jones, Roberta O'Shea, Sakina Valika, Kaila Holtz, Elena Szefer, Vanessa Noonan, Brian Kwon, Patricia Mills, Cynthia Morin, Anne Harris, Christiana Cheng, Arlene Aspinall, Tova Plashkes, Vanessa K Noonan, Katherine Chan, Mary C Verrier, B Catharine Craven, Chris Alappat, Heather M Flett, Julio C Furlan, Kristin E Musselman, James Milligan, Loretta M Hillier, Craig Bauman, Lindsay Donaldson, Joseph Lee, James Milligan, Joseph Lee, Loretta M Hillier, Karen Slonim, Dalton Wolfe, Lindsay Sleeth, Samantha Jeske, Anna Kras-Dupuis, Stephanie Marrocco, Samantha McRae, Heather Flett, Jennifer Mokry, Joanne Zee, Mark Bayley, Jean-Francois Lemay, Audrey Roy, H Dany Gagnon, Maryleen K Jones, Roberta O'Shea, Renee Theiss, Heather Flett, Kristina Guy, Gillian Johnston, Melanie Kokotow, Sandra Mills, Jennifer Mokry, Patricia Bain, Carol Scovil, Pamela Houghton, Deena Lala, Lyndsay Orr, Paul Holyoke, Dalton Wolfe, Lyndsay Orr, Jillian Brooke, Paul Holyoke, Deena Lala, Pamela Houghton, Kathleen A Martin Ginis, Robert B Shaw, Matthew J Stork, Christopher B McBride, Julio C Furlan, B Catharine Craven, Lora Giangregorio, Sander Hitzig, Naaz Kapadia, Milos R Popovic, Vera Zivanovic, Taufik Valiante, Milos R Popovic, Eleni Patsakos, Louise Brisbois, Farnoosh Farahani, Anita Kaiser, B Catharine Craven, Eleni Patsakos, Anita Kaiser, Louise Brisbois, Farnoosh Farahani, B Catharine Craven, Ben Mortenson, Megan MacGillivray, Sadeghi Mahsa, Jared Adams, Bonita Sawatzky, Patricia Mills, Kelly Arbour-Nicitopoulos, Rebecca Bassett-Gunter, Jennifer Leo, Ritu Sharma, Amy Latimer-Cheung, Timothy Olds, Kathleen Martin Ginis, Marnie Graco, Susan Cross, Chinnaya Thiyagarajan, Shirin Shafazand, Najib Ayas, Rachel Schembri, Lauren Booker, Carmel Nicholls, Patricia Burns, Mark Nash, Sally Green, David J Berlowitz, Samantha Taran, Meredith Rocchi, Kathleen A Martin Ginis, Shane N Sweet, Jeffrey G Caron, Shane N Sweet, Meredith A Rocchi, Walter Zelaya, Shane N Sweet, Austin J Bergquist, Mikael F Del Castillo-Valenzuela, Milos R Popovic, Kei Masani, Karen Ethans, Alan Casey, Micheal Namaka, Dimitri Krassiokov-Enns, Cesar Marquez-Chin, Aaron Marquis, Naaz Desai, Vera Zivanovic, Debbie Hebert, Milos R Popovic, Julio C Furlan, B Catharine Craven, Jonathan McLeod, Audrey Hicks, Cindy Gauthier, Jasmine Arel, Rachel Brosseau, Audrey L Hicks, Dany H Gagnon, Nasrin Nejatbakhsh, Anita Kaiser, Sander L Hitzig, Shauna Cappe, Colleen McGillivray, Hardeep Singh, Jaya Sam, Heather Flett, B Catharine Craven, Mary Verrier, Kristin Musselman, Ryan G L Koh, Purbasha Garai, José Zariffa, Janelle Unger, Alison R Oates, Tarun Arora, Kristin Musselman, Bondi Moshe, Burns Anthony, Sivakumar Gulasingam, B Catharine Craven, Emilie Michalovic, Heather L Gainforth, Justine Baron, Ian D Graham, Shane N Sweet, Brian Chan, B Catharine Craven, Walter Wodchis, Suzanne Cadarette, Murray Krahn, Nicole Mittmann, Keryn Chemtob, Meredith A Rocchi, Kelly Arbour-Nicitopoulos, Dahlia Kairy, Shane N Sweet, Parisa Sabetian, Ryan G L Koh, José Zariffa, Paul Yoo, Stephanie N Iwasa, Robart Babona-Pilipos, Patrick Schneider, Prashanth Velayudhan, Umalkhair Ahmed, Milos R Popovic, Cindi M Morshead, Jaeeun Yoo, Masahiro Shinya, Matija Milosevic, Kei Masani, Sharon Gabison, Sunita Mathur, Ethne Nussbaum, Milos Popovic, Mary C Verrier, Kristin Musselman, Jean-François Lemay, Shane McCullum, Kristina Guy, Kristen Walden, Jose Zariffa, Sukhvinder Kalsi-Ryan, Milad Alizadeh-Meghrazi, Joseph Lee, James Milligan, Matt Smith, Peter Athanasopoulos, Tara Jeji, Jennifer Howcroft, Jeremy Howcroft, Andrea Townson, Rhonda Willms, Tova Plashkes, Sandra Mills, Heather Flett, Carol Scovil, Filomena Mazzella, Helen Morris, Anellina Ventre, Eldon Loh, Stacey Guy, John Kramer, Tara Jeji, Nancy Xia, Swati Mehta, Kathleen A Martin Ginis, Christopher B McBride, Robert B Shaw, Christopher West, Karen Ethans, Colleen O'Connell, Susan Charlifue, Dany H Gagnon, Manuel Jose Escalona Castillo, Martin Vermette, Lívia Pinheiro Carvalho, Antony Karelis, Dahlia Kairy, Mylène Aubertin-Leheudre, Cyril Duclos, Pamela E Houghton, Lyndsay Orr, Paul Holyoke, Anna Kras-Dupuis, Dalton Wolfe, Barry Munro, Michelle Sweeny, B Catharine Craven, Heather Flett, Sander Hitzig, Farnoosh Farahani, S Mohammad Alavinia, Maryam Omidvar, Mark Bayley, Shane N Sweet, Julie Gassaway, Rob Shaw, Minna Hong, Sarah Everhart-Skeels, Bethlyn Houlihan, Anthony Burns, Gerald Bilsky, Indira Lanig, Marnie Graco, Susan Cross, Chinnaya Thiyagarajan, Shirin Shafazand, Najib Ayas, Rachel Schembri, Lauren Booker, Carmel Nicholls, Patricia Burns, Mark Nash, Sally Green, David Berlowitz, Julio C Furlan, Sukhvinder Kalsi-Ryan
No abstract text is available yet for this article.
November 2017: Journal of Spinal Cord Medicine
Michael Chang, Joshua A Dian, Suzie Dufour, Lihua Wang, Homeira Moradi Chameh, Meera Ramani, Liang Zhang, Peter L Carlen, Thilo Womelsdorf, Taufik A Valiante
Activation of γ-aminobutyric acid (GABAA) receptors have been associated with the onset of epileptiform events. To investigate if a causal relationship exists between GABAA receptor activation and ictal event onset, we activated inhibitory GABAergic networks in the superficial layer (2/3) of the somatosensory cortex during hyperexcitable conditions using optogenetic techniques in mice expressing channelrhodopsin-2 in all GABAergic interneurons. We found that a brief 30ms light pulse reliably triggered either an interictal-like event (IIE) or ictal-like ("ictal") event in the in vitro cortical 4-Aminopyridine (4-AP) slice model...
October 10, 2017: Neurobiology of Disease
Hector W L de Beaufort, Margherita Coda, Michele Conti, Theodorus M J van Bakel, Foeke J H Nauta, Ettore Lanzarone, Frans L Moll, Joost A van Herwaarden, Ferdinando Auricchio, Santi Trimarchi
OBJECTIVES: Thoracic endovascular aortic repair (TEVAR) has been shown to lead to increased aortic stiffness. The aim of this study was to investigate the effect of stent graft type and stent graft length on aortic stiffness in a controlled, experimental setting. METHODS: Twenty porcine thoracic aortas were connected to a pulsatile mock loop system. Intraluminal pressure was recorded at two sites in order to measure pulse wave velocity (PWV) for each aorta: before stent graft deployment (t1); after deployment of a 100-mm long stent graft (t2); and after distal extension through deployment of a second 100-mm long stent graft (t3)...
2017: PloS One
Stefan Agewall, Lars H Tjessem, Patrick Rossignol, Faiez Zannad, Dan Atar, Zohra Lamiral, Jean-Loup Machu, Kenneth Dickstein, John Kjekshus, Thomas G von Lueder, Nicolas Girerd
BACKGROUND: Heart rate has been reported to be associated with adverse outcome in heart failure (HF) and myocardial infarction (MI), but conflicting evidence exists regarding its impact in patients with associated atrial fibrillation (AF). OBJECTIVES: We investigated the differential impact of heart rate on clinical outcomes according to the presence or absence of AF in patients with reduced systolic function and/or HF after MI. METHODS: We studied the association of heart rate with outcome using Cox-models in a merged dataset (n=28,771) of four randomized trials (CAPRICORN, EPHESUS, OPTIMAAL, and VALIANT)...
December 15, 2017: International Journal of Cardiology
Robert P Dickson
September 20, 2017: American Journal of Respiratory and Critical Care Medicine
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