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https://www.readbyqxmd.com/read/28513070/influence-of-quercetin-on-the-interaction-of-gliclazide-with-human-serum-albumin-spectroscopic-and-docking-approaches
#1
Miroslava Kameníková, Paul Georg Furtmüller, Mária Klacsová, Arturo Lopez-Guzman, José Luis Toca-Herrera, Anika Vitkovská, Ferdinand Devínsky, Pavel Mučaji, Milan Nagy
Protein-binding interactions are displacement reactions which have been implicated as the causative mechanisms in many drug-drug interactions. Thus, the aim of presented study was to analyse human serum albumin-binding displacement interaction between two ligands, hypoglycaemic drug gliclazide and widely distributed plant flavonoid quercetin. Fluorescence analysis was used in order to investigate the effect of substances on intrinsic fluorescence of human serum albumin (HSA) and to define binding and quenching properties of ligand-albumin complexes in binary and ternary systems, respectively...
May 16, 2017: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/28496353/early-manifestations-of-renal-disease-in-patients-with-tuberous-sclerosis-complex
#2
Laura Malaga-Dieguez, Robert Spencer, Laura J Pehrson, Suzanne Vento, Kimberly Menzer, Orrin Devinsky, Howard Trachtman
OBJECTIVES: Renal manifestations are the second most significant cause of morbidity and mortality in patients with tuberous sclerosis complex (TSC), and include renal cysts, angiomyolipomas, fat-poor lesions, and malignant tumors. These lesions begin in childhood and often lead to chronic kidney disease (CKD). Little is known on the incidence of early modifiable risk factors of CKD, such as proteinuria and hypertension, or subtle decreases in glomerular filtration rate that correspond to the early stages of CKD in children with TSC...
2017: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/28464309/psychiatric-and-behavioral-comorbidities-in-epilepsy-a-critical-reappraisal
#3
REVIEW
Anne T Berg, Hamada H Altalib, Orrin Devinsky
Psychiatric and behavioral disorders are important aspects of epilepsy and have received increasing attention in the last several years. The literature upon which most of the field relies contains some biases that must be carefully examined and resolved in future studies. First, in the pediatric epilepsy literature, many reports find that children with epilepsy have high levels of behavioral and psychiatric disorders when compared to appropriate controls. Most of these studies rely on parent-proxy completed instruments to assess these behavioral endpoints...
May 2, 2017: Epilepsia
https://www.readbyqxmd.com/read/28456095/a-survey-of-medical-examiner-death-certification-of-vignettes-on-death-in-epilepsy-gaps-in-identifying-sudep
#4
Daniel S Atherton, Gregory G Davis, Cyndi Wright, Orrin Devinsky, Dale Hesdorffer
OBJECTIVE: Lack of standardized terminology on death certificates (DCs) of SUDEP type cases may obscure the presence of epilepsy in these deaths. Most DCs for individuals dying unexpectedly with epilepsy are certified by medical examiners (MEs). The purpose of this study was to gauge death certification practices of MEs when interpreting SUDEP cases and assess implications for valid surveillance of SUDEP. MATERIALS AND METHODS: A survey consisting of clinical vignettes describing deaths in individuals with epilepsy was sent to medical examiners...
April 22, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28438541/synthesis-structural-characterization-and-biological-activity-of-novel-knoevenagel-condensates-on-dld-1-human-colon-carcinoma
#5
Lucia Rišiaňová, Eva Fischer-Fodor, Jindra Valentová, Corina Tatomir, Nicoleta Corina Decea, Piroska Virag, Iveta Pechová, Ferdinand Devínsky, Natalia Miklašová
Biologically active Knoevenagel condensates (1-14) of diarylheptanoids: 1,7-bis(3-methoxy-4-hydroxyphenyl)hepta-1,7-diene-3,5-dione and 1,7-bis(3-ethoxy-4-hydroxyphenyl)hepta-1,7-diene-3,5-dione, were synthesized and structurally characterized. Compounds 1-14 exhibited cytotoxicity against colon carcinoma cells, and their antiproliferative effect was associated with a significant decrease of multidrug resistance proteins. One of the underlying mechanisms of these effects is the reduction of intracellular and extracellular SOD enzymes by compounds 1, 12 and 14, which render the tumor cells more vulnerable to oxidative stress...
April 13, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28427020/experiences-with-premorbid-sudep-discussion-among-participants-in-the-north-american-sudep-registry-nasr
#6
Jay Louik, Kyra Doumlele, Fizza Hussain, Laura Crandall, Jeffrey Buchhalter, Dale Hesdorffer, Elizabeth Donner, Orrin Devinsky, Daniel Friedman
The North American SUDEP Registry (NASR) is a repository of clinical data and biospecimens in cases of sudden unexpected death in epilepsy (SUDEP), a leading cause of epilepsy-related deaths. We assessed whether bereaved families were aware of SUDEP before their family member's death and their preferences for SUDEP disclosure. At enrollment, next-of-kin of SUDEP cases completed an intake interview, including questions assessing premorbid SUDEP discussions. Only 18.1% of the 138 next-of-kin recalled a previous discussion of SUDEP with a healthcare provider or support resource...
May 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28392266/cannabinoids-as-hippocampal-network-administrators
#7
REVIEW
Carl R Lupica, Yuhan Hu, Orrin Devinsky, Alexander F Hoffman
Extensive pioneering studies performed in the hippocampus have greatly contributed to our knowledge of an endogenous cannabinoid system comprised of the molecular machinery necessary to process these endocannabinoid lipid messengers and their associated cannabinoid receptors. Moreover, a foundation of knowledge regarding the function of hippocampal circuits, and its role in supporting synaptic plasticity has facilitated our understanding of the roles cannabinoids play in the diverse behaviors in which the hippocampus participates in both normal and pathological states...
April 6, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28384699/sudden-unexpected-death-in-epilepsy-among-patients-with-benign-childhood-epilepsy-with-centrotemporal-spikes
#8
Kyra Doumlele, Daniel Friedman, Jeffrey Buchhalter, Elizabeth J Donner, Jay Louik, Orrin Devinsky
Importance: Children with benign epilepsy with centrotemporal spikes (BECTS) have traditionally been considered to have a uniformly good prognosis. However, benign may be a misnomer because BECTS is linked to cognitive deficits, a more severe phenotype with intractable seizures, and the potential for sudden unexpected death in epilepsy (SUDEP). Objective: To determine if cases of BECTS are present in the North American SUDEP Registry (NASR). Design, Setting, and Participants: The NASR is a clinical and biospecimen repository established in 2011 to promote SUDEP research...
April 3, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28364691/incidence-of-seizures-following-initial-ischemic-stroke-in-a-community-based-cohort-the-framingham-heart-study
#9
Maria Stefanidou, Rohit R Das, Alexa S Beiser, Banu Sundar, Margaret Kelly-Hayes, Carlos S Kase, Orrin Devinsky, Sudha Seshadri, Daniel Friedman
PURPOSE: We examined the incidence of seizures following ischemic stroke in a community-based sample. METHODS: All subjects with incident ischemic strokes in the Framingham Original and Offspring cohorts between 1982 and 2003 were identified and followed for up to 20 years to determine incidence of seizures. Seizure-type was based on the 2010 International League Against Epilepsy (ILAE) classification. Disability was stratified into mild/none, moderate and severe, based on post-stroke neurological deficit documentation according to the Framingham Heart Study (FHS) protocol and functional status was determined using the Barthel Index...
April 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28358339/novel-palladium-ii-complexes-that-influence-prominin-1-cd133-expression-and-stem-cell-factor-release-in-tumor-cells
#10
Eva Fischer-Fodor, Roman Mikláš, Lucia Rišiaňová, Mihai Cenariu, Ioana-Georgeta Grosu, Piroska Virag, Maria Perde-Schrepler, Ciprian Tomuleasa, Ioana Berindan-Neagoe, Ferdinand Devínsky, Natalia Miklášová
New Pd(II) complexes of 1,7-bis(2-methoxyphenyl)hepta-1,6-diene-3,5-dione were synthesized and structurally characterized. The complexes were tested in vitro on human colon and hepatic carcinoma cell lines, normal hepatic cells and hematopoietic progenitor cells. Biological tests proved that Pd(II) complexes 1 and 2 (containing a curcumin derivative) exhibit a strong in vitro antitumor effect against the cells derived from human colorectal carcinoma and the hepatic metastasis of a colorectal carcinoma. Complex 1 has an outstanding inhibitory effect against BRAF-mutant colon carcinoma and hepatocarcinoma cell growth; 1 and 2 are both more active than the free ligand and have the capacity to trigger early apoptotic processes...
March 30, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28290070/parieto-frontal-gyrification-and-working-memory-in-healthy-adults
#11
Sophie Green, Karen Blackmon, Thomas Thesen, Jonathan DuBois, Xiuyuan Wang, Eric Halgren, Orrin Devinsky
Gyrification of the cortical mantle is a dynamic process that increases with cortical surface area and decreases with age. Increased gyrification is associated with higher scores on cognitive tasks in adults; however, the degree to which this relationship is independent of cortical surface area remains undefined. This study investigates whether regional variation in gyrification is associated with domain-general and domain-specific cognition. Our hypothesis is that increased local gyrification confers a functional advantage that is independent of surface area...
March 13, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28284051/amygdala-enlargement-temporal-lobe-epilepsy-subtype-or-nonspecific-finding
#12
Anny Reyes, Thomas Thesen, Ruben Kuzniecky, Orrin Devinsky, Carrie R McDonald, Graeme D Jackson, David N Vaughan, Karen Blackmon
OBJECTIVE: Amygdala enlargement (AE) is observed in patients with temporal lobe epilepsy (TLE), which has led to the suggestion that it represents a distinct TLE subtype; however, it is unclear whether AE is found at similar rates in other epilepsy syndromes or in healthy controls, which would limit its value as a marker for focal epileptogenicity. METHODS: We compared rates of AE, defined quantitatively from high-resolution T1-weighted MRI, in a large multi-site sample of 136 patients with nonlesional localization related epilepsy (LRE), including TLE and extratemporal (exTLE) focal epilepsy, 34 patients with idiopathic generalized epilepsy (IGE), and 233 healthy controls (HCs)...
May 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28269034/neural-correlates-to-automatic-behavior-estimations-from-rgb-d-video-in-epilepsy-unit
#13
Paolo Gabriel, Werner K Doyle, Orrin Devinsky, Daniel Friedman, Thomas Thesen, Vikash Gilja
To augment neural monitoring, a minimally intrusive multi-modal capture system was designed and implemented in the epilepsy clinic. This system provides RGB-D audio-video synchronized with patient electrocorticography (ECoG), which records neural activity across cortex. We propose an automated approach to studying the human brain in a naturalistic setting. We demonstrate coarse functional mapping of ECoG electrodes correlated to contralateral arm movements. Motor electrode mapping was generated by analyzing continuous movement data recorded over several hours from epilepsy patients in hospital rooms...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268642/hidden-markov-factor-analysis-as-a-spatiotemporal-model-for-electrocorticography
#14
Akinyinka Omigbodun, Werner K Doyle, Orrin Devinsky, Daniel Friedman, Thomas Thesen, Vikash Gilja
We present a new approach to extracting low-dimensional neural trajectories that summarize the electrocorticographic (ECoG) signals recorded with high-channel-count electrode arrays implanted subdurally. In our approach, Hidden-Markov Factor Analysis (HMFA), a finite set of factor analyzers are used to model the relationship between the high-dimensional ECoG neural space and a low-dimensional latent neural space; the factor analyzers at different time points are in turn linked together with a hidden Markov model...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227247/neural-correlates-to-automatic-behavior-estimations-from-rgb-d-video-in-epilepsy-unit
#15
Paolo Gabriel, Werner K Doyle, Orrin Devinsky, Daniel Friedman, Thomas Thesen, Vikash Gilja, Paolo Gabriel, Werner K Doyle, Orrin Devinsky, Daniel Friedman, Thomas Thesen, Vikash Gilja, Thomas Thesen, Vikash Gilja, Paolo Gabriel, Werner K Doyle, Orrin Devinsky, Daniel Friedman
To augment neural monitoring, a minimally intrusive multi-modal capture system was designed and implemented in the epilepsy clinic. This system provides RGB-D audio-video synchronized with patient electrocorticography (ECoG), which records neural activity across cortex. We propose an automated approach to studying the human brain in a naturalistic setting. We demonstrate coarse functional mapping of ECoG electrodes correlated to contralateral arm movements. Motor electrode mapping was generated by analyzing continuous movement data recorded over several hours from epilepsy patients in hospital rooms...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226822/hidden-markov-factor-analysis-as-a-spatiotemporal-model-for-electrocorticography
#16
Akinyinka Omigbodun, Werner K Doyle, Orrin Devinsky, Daniel Friedman, Thomas Thesen, Vikash Gilja, Akinyinka Omigbodun, Werner K Doyle, Orrin Devinsky, Daniel Friedman, Thomas Thesen, Vikash Gilja, Akinyinka Omigbodun, Thomas Thesen, Vikash Gilja, Werner K Doyle, Orrin Devinsky, Daniel Friedman
We present a new approach to extracting low-dimensional neural trajectories that summarize the electrocorticographic (ECoG) signals recorded with high-channel-count electrode arrays implanted subdurally. In our approach, Hidden-Markov Factor Analysis (HMFA), a finite set of factor analyzers are used to model the relationship between the high-dimensional ECoG neural space and a low-dimensional latent neural space; the factor analyzers at different time points are in turn linked together with a hidden Markov model...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28215997/cannabinoids-and-epilepsy-introduction
#17
EDITORIAL
Jerzy P Szaflarski, Orrin Devinsky
No abstract text is available yet for this article.
February 16, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28202408/self-management-in-epilepsy-why-and-how-you-should-incorporate-self-management-in-your-practice
#18
Sandra L Helmers, Rosemarie Kobau, Martha Sajatovic, Barbara C Jobst, Michael Privitera, Orrin Devinsky, David Labiner, Cam Escoffery, Charles E Begley, Ross Shegog, Dilip Pandey, Robert T Fraser, Erica K Johnson, Nancy J Thompson, Keith J Horvath
No abstract text is available yet for this article.
March 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28174134/whole-exome-sequencing-reveals-severe-thrombophilia-in-acute-unprovoked-idiopathic-fatal-pulmonary-embolism
#19
Matt Halvorsen, Ying Lin, Barbara A Sampson, Dawei Wang, Bo Zhou, Lucy S Eng, Sung Yon Um, Orrin Devinsky, David B Goldstein, Yingying Tang
BACKGROUND: Acute unprovoked idiopathic fatal pulmonary embolism (IFPE) causes sudden death without an identifiable thrombogenic risk. We aimed to investigate the underlying genomic risks of IFPE through whole exome sequencing (WES). METHODS: We reviewed 14years of consecutive out-of-hospital fatal pulmonary embolism records (n=1478) from the ethnically diverse population of New York City. We selected 68 qualifying IFPE cases for WES. We compared the WES data of IFPE cases to those of 9332 controls to determine if there is an excess of rare damaging variants in the genome using ethnicity-matched controls in collapsing analyses...
March 2017: EBioMedicine
https://www.readbyqxmd.com/read/28169833/measurements-and-models-of-electric-fields-in-the-in-vivo-human-brain-during-transcranial-electric-stimulation
#20
Yu Huang, Anli A Liu, Belen Lafon, Daniel Friedman, Michael Dayan, Xiuyuan Wang, Marom Bikson, Werner K Doyle, Orrin Devinsky, Lucas C Parra
Transcranial electric stimulation aims to stimulate the brain by applying weak electrical currents at the scalp. However, the magnitude and spatial distribution of electric fields in the human brain are unknown. We measured electric potentials intracranially in ten epilepsy patients and estimated electric fields across the entire brain by leveraging calibrated current-flow models. When stimulating at 2 mA, cortical electric fields reach 0.4 V/m, the lower limit of effectiveness in animal studies. When individual whole-head anatomy is considered, the predicted electric field magnitudes correlate with the recorded values in cortical (r = 0...
February 7, 2017: ELife
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