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Hans Luders

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https://www.readbyqxmd.com/read/30278387/electrooculogram-and-submandibular-montage-to-distinguish-different-eye-eyelid-and-tongue-movements-in-electroencephalographic-studies
#1
Cristina Rosado Coelho, Guadalupe Fernandez-Baca Vaca, Hans O Lüders
OBJECTIVE: We propose an electrooculogram and submandibular montage that helps to discriminate eye/eyelid/tongue movements and to differentiate them from epileptiform activity or slowing on electroencephalography (EEG). METHODS: We analyzed different eye/eyelid and tongue movements in 6 and 4 patients, respectively. Six peri-orbitally and one submandibular electrodes were placed. We referred these electrodes to an indifferent reference (Cz/Pz) and we recorded eye/eyelid and tongue movements simultaneously with the 10-20 system EEG...
September 24, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/30118794/evaluation-of-non-invasive-biomonitoring-of-2-4-dichlorophenoxyacetic-acid-2-4-d-in-saliva
#2
Zana A Carver, Alice A Han, Charles Timchalk, Thomas J Weber, Kimberly J Tyrrell, Ryan L Sontag, Teresa Luders, William B Chrisler, Karl K Weitz, Jordan N Smith
The objective of this study was to evaluate the potential for non-invasive biomonitoring of 2,4-Dichlorophenoxyacetic acid (2,4-D) in saliva. Using an in vitro rat salivary gland epithelial cell (SGEC) system, a collection of experiments investigating chemical protein binding, temporal and directional transport, as well as competitive transport with para-aminohippuric acid (PAH), a substrate for renal organic anion transporters, was conducted to identify cellular transport parameters required to computationally model salivary transport of 2,4-D...
August 16, 2018: Toxicology
https://www.readbyqxmd.com/read/30029672/epigenomic-profiling-of-non-small-cell-lung-cancer-xenografts-uncover-lrp12-dna-methylation-as-predictive-biomarker-for-carboplatin-resistance
#3
Sabrina Grasse, Matthias Lienhard, Steffen Frese, Martin Kerick, Anne Steinbach, Christina Grimm, Michelle Hussong, Jana Rolff, Michael Becker, Felix Dreher, Uwe Schirmer, Stefan Boerno, Anna Ramisch, Gunda Leschber, Bernd Timmermann, Christian Grohé, Heike Lüders, Martin Vingron, Iduna Fichtner, Sebastian Klein, Margarete Odenthal, Reinhard Büttner, Hans Lehrach, Holger Sültmann, Ralf Herwig, Michal R Schweiger
BACKGROUND: Non-small cell lung cancer (NSCLC) is the most common cause of cancer-related deaths worldwide and is primarily treated with radiation, surgery, and platinum-based drugs like cisplatin and carboplatin. The major challenge in the treatment of NSCLC patients is intrinsic or acquired resistance to chemotherapy. Molecular markers predicting the outcome of the patients are urgently needed. METHODS: Here, we employed patient-derived xenografts (PDXs) to detect predictive methylation biomarkers for platin-based therapies...
July 20, 2018: Genome Medicine
https://www.readbyqxmd.com/read/29905152/epileptic-seizure-semiology-in-different-age-groups
#4
Guadalupe Fernandez-Baca Vaca, Carlos L Mayor, Naira García Losarcos, Jun T Park, Hans O Lüders
Seizure semiology provides information about the eloquent cortex involved during a seizure and helps to generate a hypothesis regarding the localization of the epileptogenic zone (EZ), a prerequisite for surgical management of epilepsy. We aimed to study the seizure semiology among all different age groups to better characterize semiological changes that occur with age. We performed a retrospective review of video-EEG data in paediatric and adult patients admitted to the Epilepsy Monitoring Unit over a three-year period...
June 1, 2018: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/29215453/generalized-periodic-discharges-with-and-without-triphasic-morphology
#5
Ayham M Alkhachroum, Haifa Al-Abri, Alok Sachdeva, Sarita Maturu, Jennifer Waldron, Han Wang, Macym Rizvi, Guadalupe Fernandez-Baca Vaca, Hans O Lüders
PURPOSE: Generalized periodic discharges (GPDs) with a triphasic morphology have been associated with nonepileptic encephalopathies. We conducted the study to assess the reliability in which electroencephalographers can differentiate triphasic from nontriphasic periodic discharges and to evaluate for the presence of electroencephalogram and clinical characteristics that are associated with a higher risk of seizures. METHODS: We studied prospectively 92 patients between May 2016 and February 2017...
March 2018: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29186594/resection-of-temporal-neocortex-during-multiple-hippocampal-transections-for-mesial-temporal-lobe-epilepsy-does-not-affect-seizure-or-memory-outcome
#6
Fady Girgis, Madeline E Greil, Philip S Fastenau, Jennifer Sweet, Hans Lüders, Jonathan P Miller
BACKGROUND: Multiple hippocampal transection (MHT) is a surgical treatment for mesial temporal lobe epilepsy associated with improved postoperative neuropsychological outcomes compared with lobectomy. OBJECTIVE: To determine whether resection of the amygdala and anterior temporal neocortex during MHT affects postoperative seizure/memory outcome. METHODS: Seventeen patients with normal magnetic resonance imaging and stereo-electroencephalogram-proven drug-resistant dominant mesial temporal lobe epilepsy were treated with MHT...
December 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/27456472/passive-anterior-tibial-translation-in-women-with-and-without-joint-hypermobility-an-exploratory-study
#7
Matthias Stettler, Gere Luder, Stefan Schmid, Christine Mueller Mebes, Ursula Stutz, Hans-Rudolf Ziswiler, Lorenz Radlinger
AIM: Generalized joint hypermobility (GJH) is a frequent entity, which is still not fully understood. Symptoms associated with GJH are musculoskeletal disorders, decreased balance, impaired proprioception and chronic pain. The purpose of this study was to compare the passive anterior tibial translation (TT) in terms of distance and corresponding force between normomobile (NM) and hypermobile (HM) as well as between NM, symptomatic (HM-s) and asymptomatic (HM-as) hypermobile women. METHODS: A total of 195 women, 67 NM and 128 HM, whereof 56 were further classified as HM-s and 47 as HM-as, participated in this study...
July 26, 2016: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/27392465/brain-potential-changes-in-voluntary-and-passive-movements-in-humans-readiness-potential-and-reafferent-potentials
#8
EDITORIAL
Hans H Kornhuber, Lüder Deecke
A method of chronological data storage and reverse computation is described by which bio-electrical phenomena preceding 'spontaneous' events within the nervous system can be analysed if these events appear repeatedly and are capable of triggering a computer.Slow brain potentials accompanying voluntary and passive movements of the limbs were analysed by this method. These potentials were recorded from different points of the scalp from 12 healthy subjects in 94 experiments with more than 100 movements in each record...
July 2016: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/27064827/multiple-hippocampal-transections-for-intractable-hippocampal-epilepsy-seizure-outcome
#9
Mohamad Z Koubeissi, Emine Kahriman, Philip Fastenau, Christopher Bailey, Tanvir Syed, Shahram Amina, Jonathan Miller, Charles Munyon, Adriana Tanner, Kristina Karanec, Ingrid Tuxhorn, Hans Lüders
PURPOSE: The purpose of this study was to evaluate the seizure outcomes after transverse multiple hippocampal transections (MHTs) in 13 patients with intractable TLE. METHODS: Thirteen patients with normal memory scores, including 8 with nonlesional hippocampi on MRI, had temporal lobe epilepsy (TLE) necessitating depth electrode implantation. After confirming hippocampal seizure onset, they underwent MHT. Intraoperative monitoring was done with 5-6 hippocampal electrodes spaced at approximately 1-cm intervals and spike counting for 5-8min before each cut...
May 2016: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/26864781/ictal-motor-sequences-lateralization-and-localization-values
#10
Ahmad Marashly, Amr Ewida, Rajkumar Agarwal, Kyan Younes, Hans O Lüders
OBJECTIVE: To determine the lateralization and localization values of ictal motor sequences in the setting of focal epilepsy ending with a secondarily generalized motor seizure. METHODS: Retrospectively, the ictal motor sequences were analyzed in patients with focal epilepsy ending with a secondarily generalized motor seizure by three readers blinded to all clinical and electrographic data. One representative seizure per patient was selected. Prevalence, positive predictive value (PPV), and Fleiss Kappa for the following motor signs were calculated: version, unilateral limb tonic posturing, unilateral limb clonic seizure, figure-of-4, M2e, hand dystonia, clonic asymmetric ending, and Todd's paralysis...
March 2016: Epilepsia
https://www.readbyqxmd.com/read/26793902/treatment-of-focal-status-epilepticus-plus-epileptic-spasms-with-leukotomy-in-an-infant-with-tsc-1-mutation-a-case-study
#11
Jun T Park, Asim M Shahid, Jonathan P Miller, Hans O Lüders
BACKGROUND: Focal status epilepticus and catastrophic epilepsy are not rare in infants. Epilepsy surgery can be safely done in selected infants to cure epilepsy. PATIENT DESCRIPTION: We report on an infant who began having drug-resistant status epilepticus at 2 weeks of age and developed epileptic spasms. We discuss in detail how the clinical and electroencephalographic data were used to reach a consensus for epilepsy surgery and why a particular surgical approach was preferred over other alternatives...
December 2015: Neurodiagnostic Journal
https://www.readbyqxmd.com/read/26762747/clinicopathological-characteristics-of-ret-rearranged-lung-cancer-in-european-patients
#12
Sebastian Michels, Andreas Hans Scheel, Matthias Scheffler, Anne Maria Schultheis, Oliver Gautschi, Franziska Aebersold, Joachim Diebold, Georg Pall, Sacha Rothschild, Lukas Bubendorf, Wolfgang Hartmann, Lukas Heukamp, Hans-Ulrich Schildhaus, Jana Fassunke, Michaela Angelika Ihle, Helen Künstlinger, Carina Heydt, Rieke Fischer, Lucia Nogovà, Christian Mattonet, Rebecca Hein, Anne Adams, Ulrich Gerigk, Wolfgang Schulte, Heike Lüders, Christian Grohé, Ullrich Graeven, Clemens Müller-Naendrup, Andreas Draube, Karl-Otto Kambartel, Stefan Krüger, Susanne Schulze-Olden, Monika Serke, Walburga Engel-Riedel, Britta Kaminsky, Winfried Randerath, Sabine Merkelbach-Bruse, Reinhard Büttner, Jürgen Wolf
INTRODUCTION: Rearrangements of RET are rare oncogenic events in patients with non-small cell lung cancer (NSCLC). While the characterization of Asian patients suggests a predominance of nonsmokers of young age in this genetically defined lung cancer subgroup, little is known about the characteristics of non-Asian patients. We present the results of an analysis of a European cohort of patients with RET rearranged NSCLC. METHODS: Nine hundred ninety-seven patients with KRAS/EGFR/ALK wildtype lung adenocarcinomas were analyzed using fluorescence in situ hybridization for RET fusions...
January 2016: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/26578979/malformations-of-the-tooth-root-in-humans
#13
REVIEW
Hans U Luder
The most common root malformations in humans arise from either developmental disorders of the root alone or disorders of radicular development as part of a general tooth dysplasia. The aim of this review is to relate the characteristics of these root malformations to potentially disrupted processes involved in radicular morphogenesis. Radicular morphogenesis proceeds under the control of Hertwig's epithelial root sheath (HERS) which determines the number, length, and shape of the root, induces the formation of radicular dentin, and participates in the development of root cementum...
2015: Frontiers in Physiology
https://www.readbyqxmd.com/read/26207602/temporal-lobe-epilepsy-in-patients-with-nonlesional-mri-and-normal-memory-an-seeg-study
#14
Suraj Suresh, Jennifer Sweet, Philip S Fastenau, Hans Lüders, Patrick Landazuri, Jonathan Miller
OBJECT: Temporal lobe epilepsy (TLE) in the absence of MRI abnormalities and memory deficits is often presumed to have an extramesial or even extratemporal source. In this paper the authors report the results of a comprehensive stereoelectroencephalography (SEEG) analysis in patients with TLE with normal MRI images and memory scores. METHODS: Eighteen patients with medically refractory epilepsy who also had unremarkable MR images and normal verbal and visual memory scores on neuropsychological testing were included in the study...
December 2015: Journal of Neurosurgery
https://www.readbyqxmd.com/read/26106097/visual-spatial-memory-may-be-enhanced-with-theta-burst-deep-brain-stimulation-of-the-fornix-a-preliminary-investigation-with-four-cases
#15
RANDOMIZED CONTROLLED TRIAL
Jonathan P Miller, Jennifer A Sweet, Christopher M Bailey, Charles N Munyon, Hans O Luders, Philip S Fastenau
Memory loss after brain injury can be a source of considerable morbidity, but there are presently few therapeutic options for restoring memory function. We have previously demonstrated that burst stimulation of the fornix is able to significantly improve memory in a rodent model of traumatic brain injury. The present study is a preliminary investigation with a small group of cases to explore whether theta burst stimulation of the fornix might improve memory in humans. Four individuals undergoing stereo-electroencephalography evaluation for drug-resistant epilepsy were enrolled...
July 2015: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/26056053/lesion-negative-anterior-cingulate-epilepsy
#16
Nuria Lacuey, Javier Chapa Davila, Bilal Zonjy, Shahram Amina, Marta Couce, John Turnbull, Jonathan Miller, Hans Lüders, Samden D Lhatoo
MRI-negative anterior cingulate epilepsy is a rare entity. Herein, we describe a case of MRI and functional imaging-negative intractable frontal lobe epilepsy in which, initially, secondary bilateral synchrony of surface and intracranial EEG and non-lateralizing semiology rendered identification of the epileptogenic zone difficult. A staged bilateral stereotactic EEG exploration revealed a very focal, putative ictal onset zone in the right anterior cingulate gyrus, as evidenced by interictal and ictal high-frequency oscillations (at 250Hz) and induction of seizures from the same electrode contacts by 50-Hz low-intensity cortical stimulation...
June 2015: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/25993901/homotopic-reciprocal-functional-connectivity-between-anterior-human-insulae
#17
Nuria Lacuey, Bilal Zonjy, Emine S Kahriman, Ahmad Marashly, Jonathan Miller, Samden D Lhatoo, Hans O Lüders
The aim of this study was to investigate functional connectivity between right and left insulae in the human brain. We studied a patient with implanted depth electrodes for epilepsy surgery evaluation with stereotactically placed symmetric depth electrodes in both insulae. Bipolar 1 Hz electrical stimulation of the right and left posterior short gyri in the anterior insula evoked responses in the contralateral insular structures. These responses showed a latency of 8-24 ms. This report demonstrates for the first time bi-directional homotopic and heterotopic functional connectivity between right and left anterior insulae...
June 2016: Brain Structure & Function
https://www.readbyqxmd.com/read/25852663/microbial-methane-formation-in-deep-aquifers-of-a-coal-bearing-sedimentary-basin-germany
#18
Friederike Gründger, Núria Jiménez, Thomas Thielemann, Nontje Straaten, Tillmann Lüders, Hans-Hermann Richnow, Martin Krüger
Coal-bearing sediments are major reservoirs of organic matter potentially available for methanogenic subsurface microbial communities. In this study the specific microbial community inside lignite-bearing sedimentary basin in Germany and its contribution to methanogenic hydrocarbon degradation processes was investigated. The stable isotope signature of methane measured in groundwater and coal-rich sediment samples indicated methanogenic activity. Analysis of 16S rRNA gene sequences showed the presence of methanogenic Archaea, predominantly belonging to the orders Methanosarcinales and Methanomicrobiales, capable of acetoclastic or hydrogenotrophic methanogenesis...
2015: Frontiers in Microbiology
https://www.readbyqxmd.com/read/25740046/commentary-should-consciousness-be-used-to-describe-seizures-and-what-terms-should-be-applied-epilepsia-s-survey-results
#19
COMMENT
Hans Lüders, Shahram Amina, Matthew Eccher, Michael Devereaux, Samden Lhatoo
No abstract text is available yet for this article.
March 2015: Epilepsia
https://www.readbyqxmd.com/read/25667890/a-case-report-of-a-wada-test-after-dominant-hemisphere-multiple-hippocampal-transections-pathophysiology-of-confusion-after-amobarbital-injection
#20
Patrick Landazuri, Jonathan Miller, Hans Lüders
Dialepsis is defined as a predominant alteration of consciousness with preservation of motor tone and the ability to perform movements. While dialepsis is a common feature of both focal and generalized epilepsies, its precise symptomatogenic zone and pathogenesis remain undefined. This case report describes a patient who underwent intracarotid amobarbital procedures before and after dominant hemisphere multiple hippocampal transections. From our observations, we propose a possible pathogenesis for the generation of dialeptic seizures...
2014: Epilepsy & Behavior Case Reports
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