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https://www.readbyqxmd.com/read/29142419/antipsoriatic-and-anti-inflammatory-studies-of-berberis-aristata-extract-loaded-nanovesicular-gels
#1
Nimisha, Dilshad Ali Rizvi, Zeeshan Fatima, Neema, Chanchal Deep Kaur
Objective: Novel nanovesicular gel of Berberis aristata extract was developed and evaluated for its anti-inflammatory and antipsoriatic activity. Materials and Methods: Transferosomes were prepared using soya phosphatidylcholine and edge activators (Tween 80, Span 80, and sodium deoxycholate) by a modified lipid film hydration technique using rotary evaporator and evaluated for various parameters. The quantification and standardization of extract have been carried out using its alkaloid content as berberine as biomarker...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29141440/explaining-the-t-v-dependent-dynamics-of-glass-forming-liquids-the-cooperative-free-volume-model-tested-against-new-simulation-results
#2
Ronald P White, Jane E G Lipson
In this article, we derive a rate model, the "cooperative free volume" (CFV) model, to explain relaxation dynamics in terms of a system's free volume, Vfree, and its temperature, T, over widely varied pressure dependent conditions. In the CFV model, the rate a molecule moves a distance on the order of its own size is dependent on the cooperation of surrounding molecules to open up enough free space. To test CFV, we have generated extensive T,V dependent simulation data for structural relaxation times, τ, on a Kob and Andersen type Lennard-Jones (KA-LJ) fluid...
November 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29137043/portal-vein-thrombosis-before-and-after-transjugular-intrahepatic-portosystemic-shunt-placement-an-observational-study-strobe-compliant
#3
Yue-Meng Wan, Yu-Hua Li, Hua-Mei Wu, Zhi-Yuan Xu, Ying Xu, Li-Hong Yang, Xi-Nan Wu, Jin-Hui Yang
Portal vein thrombosis (PVT) is common in patients with cirrhosis undergoing transjugular intrahepatic portosystemic shunt (TIPS). This study had 3-fold aims: to assess risk factors for PVT; to determine the efficacy of anticoagulant therapy; to investigate the impact of PVT on clinical outcomes in TIPS-treated cirrhosis.Between June 2012 and February 2016, 126 TIPS-treated patients with cirrhosis were enrolled and studied prospectively. Enrolled patients were screened for PVT before TIPS and at 3, 6, 12, and 24 months post-TIPS...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29126328/repeated-administration-effects-on-psychomotor-vigilance-test-pvt-performance
#4
Mathias Basner, Emanuel Hermosillo, Jad Nasrini, Sarah McGuire, Salil Saxena, Tyler M Moore, Ruben C Gur, David F Dinges
Study Objectives: The Psychomotor Vigilance Test (PVT) is reported to be free of practice effects that can otherwise confound the effects of sleep loss and circadian misalignment on performance. This differentiates the PVT from more complex cognitive tests. To our knowledge, no study has systematically investigated practice effects on the PVT across multiple outcome domains, depending on administration interval, and in ecologically more valid settings. Methods: We administered a validated 3-minute PVT (PVT-B) 16 times in 45 subjects (23 male, mean±SD age 32...
November 8, 2017: Sleep
https://www.readbyqxmd.com/read/29116427/cart-neurons-in-the-lateral-hypothalamus-communicate-with-the-nucleus-accumbens-shell-via-glutamatergic-neurons-in-paraventricular-thalamic-nucleus-to-modulate-reward-behavior
#5
Amit G Choudhary, Amita R Somalwar, Sneha Sagarkar, Abhishek Rale, Amul Sakharkar, Nishikant K Subhedar, Dadasaheb M Kokare
Paraventricular thalamic nucleus (PVT) serves as a transit node processing food and drug-associated reward information, but its afferents and efferents have not been fully defined. We test the hypothesis that the CART neurons in the lateral hypothalamus (LH) project to the PVT neurons, which in turn communicate via the glutamatergic fibers with the nucleus accumbens shell (AcbSh), the canonical site for reward. Rats conditioned to self-stimulate via an electrode in the right LH-medial forebrain bundle were used...
November 7, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/29113006/transjugular-portal-vein-recanalization-with-creation-of-intrahepatic-portosystemic-shunt-pvr-tips-in-patients-with-chronic-non-cirrhotic-non-malignant-portal-vein-thrombosis
#6
Christoph Klinger, Bettina Riecken, Arthur Schmidt, Andrea De Gottardi, Benjamin Meier, Jaime Bosch, Karel Caca
Purpose To determine safety and efficacy of transjugular portal vein recanalization with creation of intrahepatic portosystemic shunt (PVR-TIPS) in patients with chronic non-cirrhotic, non-malignant portal vein thrombosis (PVT). Methods This retrospective study includes 17 consecutive patients with chronic non-cirrhotic PVT (cavernous transformation n = 15). PVR-TIPS was indicated because of variceal bleeding (n = 13), refractory ascites (n = 2), portal biliopathy with recurrent cholangitis (n = 1), or abdominal pain (n = 1)...
November 7, 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/29111772/aggregating-validity-indicators-the-salience-of-domain-specificity-and-the-indeterminate-range-in-multivariate-models-of-performance-validity-assessment
#7
Laszlo A Erdodi
This study was designed to examine the "domain specificity" hypothesis in performance validity tests (PVTs) and the epistemological status of an "indeterminate range" when evaluating the credibility of a neuropsychological profile using a multivariate model of performance validity assessment. While previous research suggests that aggregating PVTs produces superior classification accuracy compared to individual instruments, the effect of the congruence between the criterion and predictor variable on signal detection and the issue of classifying borderline cases remain understudied...
November 7, 2017: Applied Neuropsychology. Adult
https://www.readbyqxmd.com/read/29111314/perivitelline-threads-associated-with-fragments-in-human-cleavage-stage-embryos-observed-through-time-lapse-microscopy
#8
Ranya Derrick, Cristina Hickman, Oriol Oliana, Thomas Wilkinson, Danielle Gwinnett, Lucy Benham Whyte, Anna Carby, Stuart Lavery
Perivitelline threads (PVT) are defined as thin filaments that extend across the perivitelline space connecting the zona pellucida with the oolemma or, in some cases, blastomere membrane. This is the first report of PVT in human embryos. Time-lapse imagery from 525 blastocysts with either tested ploidy, known implantation status, or both, were reviewed for the presence of PVT, the cell stage when PVT were first observed, association with fragmentation, ploidy or implantation potential; PVT were observed in most embryos (404/525 [77%])...
September 21, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29109315/assessment-of-alteration-in-capnometry-monitoring-during-intravenous-sedation-with-midazolam-for-oral-surgical-procedures
#9
Kavitha G, Pallavi K Kakade, Madhavi Singh, Mahesh Ahire, Melvin Augustine, Kinjal D Jain
INTRODUCTION: Capnography is routinely used for monitoring of patients subjected to sedation for different surgical procedures. There is still paucity of data highlighting the capnographic assessment of patients on midazolam sedation undergoing oral surgical procedures. Hence, we planned the present study to assess the alterations occurring in the end-tidal carbon dioxide (ETCO2) values monitored during intravenous (IV) sedation with midazolam during various oral surgical procedures. MATERIALS AND METHODS: The present study included assessment of alteration in ETCO2 values occurring during oral surgical procedure...
November 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29106402/selective-neuronal-lapses-precede-human-cognitive-lapses-following-sleep-deprivation
#10
Yuval Nir, Thomas Andrillon, Amit Marmelshtein, Nanthia Suthana, Chiara Cirelli, Giulio Tononi, Itzhak Fried
Sleep deprivation is a major source of morbidity with widespread health effects, including increased risk of hypertension, diabetes, obesity, heart attack, and stroke. Moreover, sleep deprivation brings about vehicle accidents and medical errors and is therefore an urgent topic of investigation. During sleep deprivation, homeostatic and circadian processes interact to build up sleep pressure, which results in slow behavioral performance (cognitive lapses) typically attributed to attentional thalamic and frontoparietal circuits, but the underlying mechanisms remain unclear...
November 6, 2017: Nature Medicine
https://www.readbyqxmd.com/read/29102862/reno-portal-shunt-for-liver-transplant-an-alternative-inflow-for-recipients-with-grade-iii-iv-portal-vein-thrombosis-tips-for-a-better-outcome
#11
Mustafa Nazzal, Yifei Sun, Obi Okoye, Laurence Diggs, Neil Evans, Tamara Osborn, Kambiz Etesami, Chintalapati Varma
INTRODUCTION: Portal vein thrombosis (PVT) poses an extremely difficult problem in cirrhotic patients who are in need of a liver transplant. The prevalence of PVT in patients with cirrhosis ranges from 0.6% to 26% Nery et al. (2015) [1]. The presence of PVT is associated with more technically difficult liver transplant and in certain cases can be a contraindication to liver transplant. The only option for these patients with extensive PVT would be a multi-visceral transplant, the later unfortunately has a much higher morbidity and mortality compared to liver only transplant Smith et al...
October 12, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29092122/treatment-of-prosthetic-valve-thrombosis-with-bolus-dose-tenecteplase-an-experience-from-a-developing-country
#12
Rajesh Kumar Jha, Sandeep Bansal, H S Issar, Mayuresh Chaudhary, Sonu Sharma
BACKGROUND: Prosthetic valve thrombosis (PVT) in metallic prosthetic cardiac valves is not an uncommon condition, and has high mortality and morbidity. Although surgery is the traditional choice for PVT therapy, thrombolysis with newer agents has achieved good success rates. Many studies described in the western literature have used tissue plasminogen activators, while studies from developing countries have been largely based on the use of streptokinase and urokinase. Data regarding the use of newer agents such as tenecteplase are scant...
May 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/29080006/local-arterial-therapies-in-the-management-of-unresectable-hepatocellular-carcinoma
#13
REVIEW
Samdeep K Mouli, Laura W Goff
Most patients with hepatocellular carcinoma present with intermediate to advanced disease, where curative therapies are no longer an option. These patients with intermediate to advanced disease represent a heterogeneous population with regard to tumor burden, liver function, and performance status. While the Barcelona Clinic Liver Cancer (BCLC) staging system offers guidelines for the management of these patients, strict adherence to these guidelines may limit treatment options for these patients. Several locoregional therapies exist for these patients, including conventional transarterial chemoembolization (cTACE), transarterial embolization (TAE), drug-eluting embolization (DEE), and radioembolization...
October 27, 2017: Current Treatment Options in Oncology
https://www.readbyqxmd.com/read/29078732/abnormal-turning-and-its-association-with-self-reported-symptoms-in-chronic-mtbi
#14
Peter C Fino, Lucy Parrington, Merissa Walls, Emily Sippel, Timothy E Hullar, James C Chesnutt, Laurie A King
Turning is common in daily activity and requires rapid, coordinated reorientation of the head and trunk, and pelvis towards the new direction of travel. Yet, turning gait has not been well explored in populations with mild traumatic brain injury (mTBI) who may alter their turning behavior according to self-perceived symptoms or motor dysfunction. The purpose of this study was to examine turning velocities and coordination in adults with chronic mTBI (>3 months post-injury and still reporting balance complaints) during a task simulating everyday ambulation...
October 27, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29073206/modeling-the-adenosine-system-as-a-modulator-of-cognitive-performance-and-sleep-patterns-during-sleep-restriction-and-recovery
#15
Andrew J K Phillips, Elizabeth B Klerman, James P Butler
Sleep loss causes profound cognitive impairments and increases the concentrations of adenosine and adenosine A1 receptors in specific regions of the brain. Time courses for performance impairment and recovery differ between acute and chronic sleep loss, but the physiological basis for these time courses is unknown. Adenosine has been implicated in pathways that generate sleepiness and cognitive impairments, but existing mathematical models of sleep and cognitive performance do not explicitly include adenosine...
October 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/29071300/dopamine-d2-receptors-in-the-paraventricular-thalamus-attenuate-cocaine-locomotor-sensitization
#16
Abigail M Clark, Felix Leroy, Kelly M Martyniuk, Wendy Feng, Erika McManus, Matthew R Bailey, Jonathan A Javitch, Peter D Balsam, Christoph Kellendonk
Alterations in thalamic dopamine (DA) or DA D2 receptors (D2Rs) have been measured in drug addiction and schizophrenia, but the relevance of thalamic D2Rs for behavior is largely unknown. Using in situ hybridization and mice expressing green fluorescent protein (GFP) under the Drd2 promoter, we found that D2R expression within the thalamus is enriched in the paraventricular nucleus (PVT) as well as in more ventral midline thalamic nuclei. Within the PVT, D2Rs are inhibitory as their activation inhibits neuronal action potentials in brain slices...
September 2017: ENeuro
https://www.readbyqxmd.com/read/29070023/portal-vein-thrombosis-in-liver-cirrhosis-incidence-management-and-outcome
#17
Shunichiro Fujiyama, Satoshi Saitoh, Yusuke Kawamura, Hitomi Sezaki, Tetsuya Hosaka, Norio Akuta, Masahiro Kobayashi, Yoshiyuki Suzuki, Fumitaka Suzuki, Yasuji Arase, Kenji Ikeda, Hiromitsu Kumada
BACKGROUND: Portal vein thrombosis (PVT) is a serious complication in liver cirrhosis with portal hypertension. We examined the treatment, recurrence and prognosis of PVT in cirrhotic patients. METHODS: The study subjects were all 90 cirrhotic patients with PVT treated with danaparoid sodium (DS) at our department between July 2007 and September 2016. The mean age was 68 years and mean Child-Pugh score was 7. All patients received 2500 U/day of DS for 2 weeks, and repeated in those who developed PVT recurrence after the initial therapy...
October 25, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/29069278/performance-validity-neurocognitive-disorder-and-post-concussion-symptom-reporting-in-service-members-with-a-history-of-mild-traumatic-brain-injury
#18
Sara M Lippa, Rael T Lange, Louis M French, Grant L Iverson
Objective: To examine the influence of different performance validity test (PVT) cutoffs on neuropsychological performance, post-concussion symptoms, and rates of neurocognitive disorder and postconcussional syndrome following mild traumatic brain injury (MTBI) in active duty service members. Method: Participants were 164 service members (Age: M = 28.1 years [SD = 7.3]) evaluated on average 4.1 months (SD = 5.0) following injury. Participants were divided into three mutually exclusive groups using original and alternative cutoff scores on the Test of Memory Malingering (TOMM) and the Effort Index (EI) from the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS): (a) PVT-Pass, n = 85; (b) Alternative PVT-Fail, n = 53; and (c) Original PVT-Fail, n = 26...
October 21, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/29068163/bioprosthetic-tricuspid-valve-thrombosis-percutaneous-pfo-closure-to-improve-hypoxia-and-respiratory-failure
#19
Peter Flueckiger, Matthew Singleton, Sujethra Vasu, David Zhao
Prosthetic valve thrombosis (PVT) is an increasingly recognized complication of bioprosthetic valve replacement, often resulting in abnormal hemodynamic, endothelial, and hemostatic conditions. Bioprosthetic PVT may lead to significant hemodynamic and clinical effects. In hemodynamically stable patients, first-line treatment for bioprosthetic PVT is systemic anticoagulation. However, concomitant cardiovascular pathology may lead to additional clinical sequalae that requires acute therapeutic interventions. We describe two cases in which bioprosthetic PVT leads to hemodynamically significant intracardiac shunting through pre-existing patent foramen ovales requiring percutaneous closure with a Cribriform AMPLATZER occluder device...
October 25, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29067911/syncope-in-a-young-man-role-of-purkinje-fibres-in-idiopathic-ventricular-fibrillation
#20
Claire A Martin, Laurence Nunn, Pier D Lambiase
A young man suffered cardiac arrests with polymorphic ventricular tachycardia (PVT) and ventricular fibrillation (VF) triggered by ventricular premature contractions (PVCs). The arrhythmia was resistant to anti-arrhythmics, so after ICD implantation he underwent successful ablation of the triggering VE beat, which was pace-mapped to the left posterior hemi-fascicle. We review the evidence for the role of the Purkinje network in the initiation and maintenance of PVT and VF, postulating a channelopathy as a possible underlying cause, and provide recommendations for PVC ablation...
July 2017: Indian Pacing and Electrophysiology Journal
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