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https://www.readbyqxmd.com/read/27905022/neurophysiology-of-space-travel-energetic-solar-particles-cause-cell-type-specific-plasticity-of-neurotransmission
#1
Sang-Hun Lee, Barna Dudok, Vipan K Parihar, Kwang-Mook Jung, Miklós Zöldi, Young-Jin Kang, Mattia Maroso, Allyson L Alexander, Gregory A Nelson, Daniele Piomelli, István Katona, Charles L Limoli, Ivan Soltesz
In the not too distant future, humankind will embark on one of its greatest adventures, the travel to distant planets. However, deep space travel is associated with an inevitable exposure to radiation fields. Space-relevant doses of protons elicit persistent disruptions in cognition and neuronal structure. However, whether space-relevant irradiation alters neurotransmission is unknown. Within the hippocampus, a brain region crucial for cognition, perisomatic inhibitory control of pyramidal cells (PCs) is supplied by two distinct cell types, the cannabinoid type 1 receptor (CB1)-expressing basket cells (CB1BCs) and parvalbumin (PV)-expressing interneurons (PVINs)...
November 30, 2016: Brain Structure & Function
https://www.readbyqxmd.com/read/27801844/screening-auxin-response-in-vitro-culture-aptitude-and-susceptibility-to-agrobacterium-mediated-transformation-of-italian-commercial-durum-wheat-varieties
#2
Wilma Sabetta, Cristina Crosatti, Alexandra Soltész, Valentina Di Rienzo, Cinzia Montemurro
The development of a robust Agrobacterium-mediated transformation protocol for a recalcitrant species like durum wheat requires the identification and optimization of factors affecting T-DNA delivery and plant regeneration. The purpose of this research was to compare the behavior of diverse durum wheat genotypes during in vitro culture and Agrobacterium tumefaciens-mediated transformation, using immature embryos as explants. Apart from plant genotype, two of the main influencing factors for a successful genetic transformation have been examined here, i...
October 28, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27788942/outcomes-of-a-less-invasive-approach-for-proximal-aortic-operations
#3
Melissa M Levack, Muhammad Aftab, Eric E Roselli, Douglas R Johnston, Edward G Soltesz, A Marc Gillinov, Gösta B Pettersson, Brian Griffin, Richard Grimm, Donald F Hammer, Adil H Al Kindi, Turki B Albacker, Edgardo Sepulveda, Lucy Thuita, Eugene H Blackstone, Joseph F Sabik, Lars G Svensson
BACKGROUND: Less-invasive techniques have previously been described for mitral and aortic valve operations; however, few studies have examined their benefit for aortic root and ascending aorta reconstruction. Using propensity matching, we compared outcomes of patients undergoing proximal aortic operations through a J incision compared with full sternotomy. METHODS: From January 1995 to January 2014, 8,533 patients underwent proximal aortic operations at Cleveland Clinic...
October 24, 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27767963/rheopheresis-in-vascular-diseases
#4
Melinda Vass, Ágnes Diószegi, Norbert Németh, Viktória Sógor, Sándor Baráth, Eszter Szalai, László Módis, Soltész Pál
Rheopheresis is an extracorporal selective double-filtration procedure. In the first part of the treatment the blood is passes through the plasma filter, which separates blood cells from the plasma. Then the plasma flow to a second filter called MONET (Membranefiltration Optimised Novel Extracorporal Treatment). The MONET filter retains high molecular weight proteins such LDL, Lp(a), fibrinogen, α2 macroglobulin, vWF and IgM. Hereby the whole blood and plasma viscosity decrease, improves microcirculation, and has a positive effect on lipid profile as well...
October 15, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27712829/thoracoabdominal-aortic-aneurysm-repair-big-case-big-risk-big-center
#5
Faisal G Bakaeen, Eric E Roselli, Douglas R Johnston, Edward G Soltesz, Michael Z Tong, Lars G Svensson
No abstract text is available yet for this article.
September 28, 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27576237/closed-loop-prevention-of-hypotension-in-the-heartbeating-brain-dead-porcine-model
#6
Kristian Soltesz, Christopher Sturk, Audrius Paskevicius, Qiuming Liao, Guangqi Qin, Trygve Sjoberg, Stig Steen
: The purpose of this paper is to demonstrate feasibility of a novel closed-loop controlled therapy for prevention of hypertension in the heartbeating brain-dead porcine model. METHODS: Dynamic modeling and system identification were based on in vivo data. A robust controller design was obtained for the identified models. Disturbance attenuation properties, and reliability of operation of the resulting control system, were evaluated in vivo. RESULTS: The control system responded both predictably and consistently to external disturbances...
August 25, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/27554237/etomidate-and-the-risk-of-complications-after-cardiac-surgery-a-retrospective-cohort-analysis
#7
Ryu Komatsu, Natalya Makarova, Jing You, Daniel I Sessler, David G Anthony, Yusuke Kasuya, Edward G Soltesz, Alparslan Turan
OBJECTIVE: To compare incidence of atrial arrhythmia, duration of care, and major complications after cardiac surgery between patients who received etomidate and those who received other induction agents. DESIGN: Retrospective cohort study utilizing propensity score matching. SETTING: A single academic, tertiary care hospital. PARTICIPANTS: Eight thousand nine hundred seventy-eight patients undergoing coronary artery bypass grafting (CABG), valve, or combined valve/CABG surgery requiring cardiopulmonary bypass between January 2005 and December 2010...
December 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/27449353/outcomes-after-aortic-graft-to-graft-anastomosis-with-an-automated-circular-stapler-a-novel-approach
#8
Jay J Idrees, Farhang Yazdchi, Edward G Soltesz, Andrew M Vekstein, Christopher Rodriguez, Eric E Roselli
OBJECTIVE: Patients with complex aortic disease often require multistaged repairs with numerous anastomoses. Manual suturing can be time consuming. To reduce ischemic time, a circular stapling device has been used to facilitate prosthetic graft-to-graft anastomoses. Objectives are to describe this technique and assess outcomes. METHODS: From February 2009 to May 2014, 44 patients underwent complex aortic repair with a circular end-to-end anastomosis (EEA) stapler at Cleveland Clinic...
October 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27430050/-favourable-effects-of-kidney-transplantation-on-vascular-condition-of-patients-potential-prognostic-significance-of-non-invasive-measurement-of-arterial-stiffness
#9
Dávid Ágoston Kovács, László Asztalos, Renáta Laczik, Roland Fedor, László Szabó, Lajos Lőcsey, Pál Soltész
INTRODUCTION: Development of atherosclerosis is accelerated in kidney transplant patients. Impaired metabolic pathways have complex effect on the arterial wall which can be measured by non-invasive techniques. Only few data are available on the change of stiffness parameters in the postoperative course. Therefore, in this study the authors analysed the stiffness parameters of kidney transplant recipients during the perioperative period. AIM: Non-invasive clinical trial of the arterial functional parameters in the early postoperative period...
June 12, 2016: Orvosi Hetilap
https://www.readbyqxmd.com/read/27335256/risk-factors-and-outcomes-of-patients-requiring-a-permanent-pacemaker-after-aortic-valve-replacement-in-the-united-states
#10
Michael P Robich, Nicholas K Schiltz, Douglas R Johnston, Stephanie Mick, Amar Krishnaswamy, Rodrigo A Iglesias, Dustin Hang, Eric E Roselli, Edward G Soltesz
INTRODUCTION: The need for permanent pacemaker implantation (PCM) following surgical aortic valve replacement (SAVR) is uncommon but can lead to increased hospital resource utilization. Using nationwide data, we sought to (1) identify hospital, patient, and procedure-level risk factors for PCM after SAVR and (2) determine incremental resource utilization. METHODS: We identified 659,692 patients from the Nationwide Inpatient Sample database who underwent SAVR with or without coronary artery bypass grafting (CABG), mitral valvuloplasty (MVr), or mitral valve replacement (MVR) between 1998 and 2009...
August 2016: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/27323941/organization-and-control-of-epileptic-circuits-in-temporal-lobe-epilepsy
#11
A Alexander, M Maroso, I Soltesz
When studying the pathological mechanisms of epilepsy, there are a seemingly endless number of approaches from the ultrastructural level-receptor expression by EM-to the behavioral level-comorbid depression in behaving animals. Epilepsy is characterized as a disorder of recurrent seizures, which are defined as "a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain" (Fisher et al., 2005). Such abnormal activity typically does not occur in a single isolated neuron; rather, it results from pathological activity in large groups-or circuits-of neurons...
2016: Progress in Brain Research
https://www.readbyqxmd.com/read/27194256/preclinical-safety-testing-for-morcellation-and-extraction-for-an-endobag-with-sealable-ports-in-vitro-pilot-study
#12
Michael Anapolski, Dimitrios Panayotopoulos, Ibrahim Alkatout, Stefan Soltesz, Sven Schiermeier, Günter Noé
BACKGROUND: Electromechanical power morcellation is an important tool of modern laparoscopy. Recent reports on the spread of previously undetected malignancy by power morcellation indicate the need for additional protective devices to reduce this risk. We conducted a study to obtain the first data concerning the safety of an endobag with three closable ports during morcellation and subsequent bag extraction under in vitro conditions, mimicking the settings in our operating theater. The second purpose of the study was to establish a minimal width of the skin incision necessary to safely extract the sealed bag after morcellation...
May 18, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27192613/power-morcellation-inside-a-secure-endobag-a-pilot-study
#13
Michael Anapolski, Dimitrios Panayotopoulos, Ibrahim Alkatout, Stefan Soltesz, Lieselotte Mettler, Sven Schiermeier, Wolfgang Hatzmann, Günter Noé
INTRODUCTION: Unprotected power morcellation can lead to a spread of previously undiagnosed malignancy. We present a new containment bag with two closable trocar insertion sites to reduce this risk. This pilot study was designed to assess the feasibility of this device under everyday conditions. MATERIAL AND METHODS: The containment bag was used in ten laparoscopic supracervical hysterectomies. We evaluated time requirement for bag insertion into the abdominal cavity and in-bag morcellation...
August 2016: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/26952291/outcomes-after-elective-proximal-aortic-replacement-a-matched-comparison-of-isolated%C3%A2-versus-multicomponent-operations
#14
Jay J Idrees, Eric E Roselli, Ashley M Lowry, Joshua M Reside, Hoda Javadikasgari, Daniel J Johnson, Edward G Soltesz, Douglas R Johnston, Gösta B Pettersson, Eugene H Blackstone, Joseph F Sabik, Lars G Svensson
BACKGROUND: Guidelines supporting the decision to replace the aorta in patients with chronic asymptomatic proximal aortic disease are limited by lack of data on operative risks and long-term effectiveness in relation to aortic size. Therefore, we assessed and compared outcomes of patients undergoing elective isolated proximal aortic replacement for this disease vs replacement during multicomponent operations. METHODS: From January 2006 to January 2011, 1,889 patients underwent proximal aortic replacement (isolated, 212; multicomponent, 1,677) for chronic asymptomatic ascending and arch pathology...
June 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/26898775/cannabinoid-control-of-learning-and-memory-through-hcn-channels
#15
Mattia Maroso, Gergely G Szabo, Hannah K Kim, Allyson Alexander, Anh D Bui, Sang-Hun Lee, Beat Lutz, Ivan Soltesz
The mechanisms underlying the effects of cannabinoids on cognitive processes are not understood. Here we show that cannabinoid type-1 receptors (CB1Rs) control hippocampal synaptic plasticity and spatial memory through the hyperpolarization-activated cyclic nucleotide-gated (HCN) channels that underlie the h-current (Ih), a key regulator of dendritic excitability. The CB1R-HCN pathway, involving c-Jun-N-terminal kinases (JNKs), nitric oxide synthase, and intracellular cGMP, exerts a tonic enhancement of Ih selectively in pyramidal cells located in the superficial portion of the CA1 pyramidal cell layer, whereas it is absent from deep-layer cells...
March 2, 2016: Neuron
https://www.readbyqxmd.com/read/26878673/hippogate-a-break-in-from-entorhinal-cortex
#16
COMMENT
Allyson Alexander, Ivan Soltesz
No abstract text is available yet for this article.
April 2016: Nature Neuroscience
https://www.readbyqxmd.com/read/26864194/monitoring-recovery-from-rocuronium-induced-neuromuscular-block-using-acceleromyography-at-the-trapezius-versus-the-adductor-pollicis-muscle-an-observational-trial
#17
Stefan Soltesz, Christian Stark, Karl G Noé, Michael Anapolski, Thomas Mencke
PURPOSE: Positioning for surgery can restrict access to the patient's hand, thereby limiting assessment of the response at the adductor pollicis muscle to ulnar nerve stimulation. We evaluated a novel site to assess neuromuscular block by stimulating the accessory nerve and measuring the acceleromyographic response at the trapezius muscle. METHODS: In this prospective non-blinded observational study, we assessed neuromuscular transmission in anesthetized adult female patients undergoing elective laparoscopic gynecological surgery...
June 2016: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/26810904/intermittent-versus-continuous-sciatic-block-combined-with-femoral-block-for-patients-undergoing-knee-arthroplasty-a-randomized-controlled-trial
#18
Stefan Soltesz, Dorothee Meiger, Susanne Milles-Thieme, Guido Saxler, Stephan Ziegeler
PURPOSE: Many institutions perform peripheral femoral and/or sciatic nerve blocks for analgesia after total knee arthroplasty. The aim of the present investigation was to compare the analgesic effect of an intermittent sciatic block (boluses on demand only) with a continuous infusion. METHODS: One hundred and forty patients receiving a femoral and a sciatic nerve block (SNB) by catheter were assessed. The femoral catheter was infused continuously in both groups...
September 2016: International Orthopaedics
https://www.readbyqxmd.com/read/26700888/seizing-control-from-current-treatments-to-optogenetic-interventions-in-epilepsy
#19
Anh D Bui, Allyson Alexander, Ivan Soltesz
The unpredictability and severity of seizures contribute to the debilitating nature of epilepsy. These factors also render the condition particularly challenging to treat, as an ideal treatment would need to detect and halt the pathological bursts of hyperactivity without disrupting normal brain activity. Optogenetic techniques offer promising tools to study and perhaps eventually treat this episodic disorder by controlling specific brain circuits in epileptic animals with great temporal precision. Here, we briefly review the current treatment options for patients with epilepsy...
December 23, 2015: Neuroscientist: a Review Journal Bringing Neurobiology, Neurology and Psychiatry
https://www.readbyqxmd.com/read/26692404/comparison-of-anticoagulation-strategies-after-left-ventricular-assist-device-implantation
#20
Alexander Kantorovich, Jodie M Fink, Michael A Militello, Seth R Bauer, Edward G Soltesz, Nader Moazami
Appropriate early anticoagulation after left ventricular assist device (LVAD) implantation has not been established with practices ranging from no anticoagulation to early heparinization. The goal of this study was to evaluate the efficacy and morbidity of three strategies before initiating oral anticoagulation therapy. This was a noninterventional, retrospective, matched historical control cohort study. The primary and secondary endpoints were thrombotic complications (TCs) and bleeding up to 30 days post-LVAD implantation...
March 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
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