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https://www.readbyqxmd.com/read/28739219/systematic-review-of-hardware-related-complications-of-deep-brain-stimulation-do-new-indications-pose-an-increased-risk
#1
Onanong Jitkritsadakul, Roongroj Bhidayasiri, Suneil K Kalia, Mojgan Hodaie, Andres M Lozano, Alfonso Fasano
INTRODUCTION: Deep Brain Stimulation (DBS) is an effective treatment extended broadly to many neurological and psychiatric disorders. Nevertheless, complications may arise during DBS procedures or following implantation due to implanted hardware. This may result in both minor and major adverse events that may necessitate hardware removal and/or compromise maximal therapeutic benefit for the patient. OBJECTIVES AND METHODS: To identify relevant literature on hardware-related complications from DBS procedures by performing a systematic review, and propose how to identify at-risk group and possible preventive approaches...
July 13, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28718878/deep-brain-and-cortical-stimulation-for-epilepsy
#2
REVIEW
Mathieu Sprengers, Kristl Vonck, Evelien Carrette, Anthony G Marson, Paul Boon
BACKGROUND: Despite optimal medical treatment, including epilepsy surgery, many epilepsy patients have uncontrolled seizures. Since the 1970s interest has grown in invasive intracranial neurostimulation as a treatment for these patients. Intracranial stimulation includes both deep brain stimulation (DBS) (stimulation through depth electrodes) and cortical stimulation (subdural electrodes). This is an updated version of a previous Cochrane review published in 2014. OBJECTIVES: To assess the efficacy, safety and tolerability of DBS and cortical stimulation for refractory epilepsy based on randomized controlled trials (RCTs)...
July 18, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28606582/patients-perioperative-experience-of-awake-deep-brain-stimulation-for-parkinson-s-disease
#3
Eoin Mulroy, Nigel Robertson, Lorraine Macdonald, Arnold Bok, Mark Simpson
BACKGROUND: Awake craniotomy for tumor resection and epilepsy surgery is a well-tolerated procedure. Qualitative data on patients' experience of awake deep brain stimulation (DBS) is however, lacking. We collected qualitative data on patients' experience of awake DBS with a view to identifying areas for improvement. METHODS: Forty-one patients undergoing DBS for Parkinson's disease (PD) between 2009 and 2015 were surveyed using a structured questionnaire designed to receive patient feedback regarding perioperative management of the awake stage of the procedure CONCLUSIONS: Though awake DBS is well-tolerated, pain and off-period symptoms are an issue for a significant number of patients...
June 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28469569/eliminating-absence-seizures-through-the-deep-brain-stimulation-to-thalamus-reticular-nucleus
#4
Zhihui Wang, Qingyun Wang
Deep brain stimulation (DBS) can play a crucial role in the modulation of absence seizures, yet relevant biophysical mechanisms are not completely established. In this paper, on the basis of a biophysical mean-field model, we investigate a typical absence epilepsy activity by introducing slow kinetics of GABAB receptors on thalamus reticular nucleus (TRN). We find that the region of spike and slow-wave discharges (SWDs) can be reduced greatly when we add the DBS to TRN. Furthermore, we systematically explore how the corresponding stimulation parameters including frequency, amplitude and positive input duration suppress the SWDs under certain conditions...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/28357411/gnao1-encephalopathy-broadening-the-phenotype-and-evaluating-treatment-and-outcome
#5
Federica Rachele Danti, Serena Galosi, Marta Romani, Martino Montomoli, Keren J Carss, F Lucy Raymond, Elena Parrini, Claudia Bianchini, Tony McShane, Russell C Dale, Shekeeb S Mohammad, Ubaid Shah, Neil Mahant, Joanne Ng, Amy McTague, Rajib Samanta, Gayatri Vadlamani, Enza Maria Valente, Vincenzo Leuzzi, Manju A Kurian, Renzo Guerrini
OBJECTIVE: To describe better the motor phenotype, molecular genetic features, and clinical course of GNAO1-related disease. METHODS: We reviewed clinical information, video recordings, and neuroimaging of a newly identified cohort of 7 patients with de novo missense and splice site GNAO1 mutations, detected by next-generation sequencing techniques. RESULTS: Patients first presented in early childhood (median age of presentation 10 months, range 0-48 months), with a wide range of clinical symptoms ranging from severe motor and cognitive impairment with marked choreoathetosis, self-injurious behavior, and epileptic encephalopathy to a milder phenotype, featuring moderate developmental delay associated with complex stereotypies, mainly facial dyskinesia and mild epilepsy...
April 2017: Neurology. Genetics
https://www.readbyqxmd.com/read/28285213/remote-modulation-of-network-excitability-during-deep-brain-stimulation-for-epilepsy
#6
REVIEW
Dong-Hong Li, Xiao-Feng Yang
Deep brain stimulation (DBS) has become a well-accepted medical therapy in the treatment of movement disorders such as Parkinson's disease, and is currently under investigation as a treatment for other disorders, including epilepsy. Although DBS is widely used, its therapeutic mechanisms remain poorly understood. Recent research shows that seizures are network-level phenomena, but the incomplete knowledge of neural circuit function has left a gap in our understanding of how disruption at a molecular or cellular level generates epilepsy...
April 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28269577/sinusoidal-stimulation-trains-suppress-epileptiform-spikes-induced-by-4-ap-in-the-rat-hippocampal-ca1-region-in-vivo
#7
Zheshan Guo, Zhouyan Feng, Ying Yu, Wenjie Zhou, Zhaoxiang Wang, Xuefeng Wei
Deep brain stimulation (DBS) shows promises in the treatment of refractory epilepsy. Due to the complex causes of epilepsy, the mechanisms of DBS are still unclear. Depolarization block caused by the persistent excitation of neurons may be one of the possible mechanisms. To test the hypothesis, 4-aminopyridine (4-AP) was injected in rat hippocampal CA1 region in-vivo to induce epileptiform activity. Sinusoidal stimulation trains were applied to the afferent pathway (Schaffer collaterals) of CA1 region to suppress the epileptiform spikes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269576/detection-of-single-unit-spikes-during-orthodromic-high-frequency-stimulation-in-rat-hippocampus
#8
Zhaoxiang Wang, Zhouyan Feng, Ying Yu, Yufang Zhu, Zheshan Guo
Deep brain stimulation (DBS) has been used as a treatment of brain diseases such as Parkinson's disease and is a promising therapy for epilepsy. But the mechanisms of high frequency stimulation (HFS) used by DBS are still uncertain. In order to investigate the changes of action penitential firings of individual neurons (single unit activity, SUA) during the period of HFS, a new algorithm based on window detection was designed to detect spikes in broadband-frequency recording signals. The results show that orthodromic-HFS (O-HFS) could excite the neurons in CA1 regions, and the firing rate of interneurons and pyramidal neurons increased significantly...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28251589/neurostimulation-devices-used-in-treatment-of-epilepsy
#9
REVIEW
Evren Burakgazi Dalkilic
Epilepsy is a chronic neurological disorder frequently requiring lifelong treatment. In 70% of epilepsy patients, seizures are well controlled by antiepileptic medications. About 30% of epilepsy patients remain refractory to medical treatments and may need surgical interventions for better seizure control. Unfortunately and not infrequently, surgical intervention is not feasible due to various reasons such as multiple seizure foci, not resectable focus because of eloquent cortex location, or inability to tolerate surgery due to ongoing concomitant medical conditions...
February 2017: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/28227832/sinusoidal-stimulation-trains-suppress-epileptiform-spikes-induced-by-4-ap-in-the-rat-hippocampal-ca1-region-in-vivo
#10
Zheshan Guo, Zhouyan Feng, Ying Yu, Wenjie Zhou, Zhaoxiang Wang, Xuefeng Wei, Zheshan Guo, Zhouyan Feng, Ying Yu, Wenjie Zhou, Zhaoxiang Wang, Xuefeng Wei, Ying Yu, Zhouyan Feng, Xuefeng Wei, Zhaoxiang Wang, Zheshan Guo, Wenjie Zhou
Deep brain stimulation (DBS) shows promises in the treatment of refractory epilepsy. Due to the complex causes of epilepsy, the mechanisms of DBS are still unclear. Depolarization block caused by the persistent excitation of neurons may be one of the possible mechanisms. To test the hypothesis, 4-aminopyridine (4-AP) was injected in rat hippocampal CA1 region in-vivo to induce epileptiform activity. Sinusoidal stimulation trains were applied to the afferent pathway (Schaffer collaterals) of CA1 region to suppress the epileptiform spikes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227831/detection-of-single-unit-spikes-during-orthodromic-high-frequency-stimulation-in-rat-hippocampus
#11
Zhaoxiang Wang, Zhouyan Feng, Ying Yu, Yufang Zhu, Zheshan Guo, Zhaoxiang Wang, Zhouyan Feng, Ying Yu, Yufang Zhu, Zheshan Guo, Yufang Zhu, Ying Yu, Zhouyan Feng, Zhaoxiang Wang, Zheshan Guo
Deep brain stimulation (DBS) has been used as a treatment of brain diseases such as Parkinson's disease and is a promising therapy for epilepsy. But the mechanisms of high frequency stimulation (HFS) used by DBS are still uncertain. In order to investigate the changes of action penitential firings of individual neurons (single unit activity, SUA) during the period of HFS, a new algorithm based on window detection was designed to detect spikes in broadband-frequency recording signals. The results show that orthodromic-HFS (O-HFS) could excite the neurons in CA1 regions, and the firing rate of interneurons and pyramidal neurons increased significantly...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28061418/memory-and-mood-outcomes-after-anterior-thalamic-stimulation-for-refractory-partial-epilepsy
#12
Alexander I Tröster, Kimford J Meador, Christopher P Irwin, Robert S Fisher
PURPOSE: Bilateral deep brain stimulation (DBS) of the anterior nucleus of the thalamus (ANT) reduces seizures and is relatively safe but may be accompanied by complaints of memory problems and depression. This study examined incidence of memory and depression adverse events (AE) in the SANTE study blinded phase and their relationship to objective neurobehavioral measures, baseline characteristics, quality of life and long-term neurobehavioral outcome. METHOD: The neurobehavioral AE and neuropsychological data from a previously reported prospective randomized trial (SANTE) were analyzed...
February 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28030998/the-role-of-thalamus-versus-cortex-in-epilepsy-evidence-from-human-ictal-centromedian-recordings-in-patients-assessed-for-deep-brain-stimulation
#13
David Martín-López, Diego Jiménez-Jiménez, Lidia Cabañés-Martínez, Richard P Selway, Antonio Valentín, Gonzalo Alarcón
BACKGROUND: The onset of generalized seizures is a long debated subject in epilepsy. The relative roles of cortex and thalamus in initiating and maintaining the different seizure types are unclear. OBJECTIVE: The purpose of the study is to estimate whether the cortex or the centromedian thalamic nucleus is leading in initiating and maintaining seizures in humans. METHODS: We report human ictal recordings with simultaneous thalamic and cortical electrodes from three patients without anesthesia being assessed for deep brain stimulation (DBS)...
October 24, 2016: International Journal of Neural Systems
https://www.readbyqxmd.com/read/27992003/neuromodulation-in-refractory-epilepsy-brazilian-specialists-consensus
#14
Vera Cristina Terra, Isabella D'Andrea-Meira, Ricardo Amorim, Francisco Arruda, Andrea Julião de Oliveira, Luciano De Paola, Adélia Maria de Miranda Henriques-Souza
Epilepsy is a potentially devastating brain disorder characterized by a predisposition to spontaneous epileptic seizures. In patients with medically refractory epilepsy, new non-pharmacological therapeutic approaches may be considered. In this scenario, palliative surgery such as vagus nerve stimulation (VNS) or deep brain stimulation (DBS) may be indicated in a subset of patients. In this paper we make recommendations for the use of VNS and DBS in patients in Brazil with refractory epilepsy.
December 2016: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/27723660/relationship-between-postoperative-eeg-driving-response-and-lead-location-in-deep-brain-stimulation-of-the-anterior-nucleus-of-the-thalamus-for-refractory-epilepsy
#15
Byung-Chul Son, Young Min Shon, Seong-Hoon Kim, Jin-Gyu Choi, Jiyeon Kim
OBJECTIVES: Interpreting the postoperative electroencephalographic (EEG) driving response (DR) as an indicator of electrode placement within the thalamic nucleus in deep brain stimulation (DBS) of the anterior nucleus of the thalamus (ANT) for refractory epilepsy is controversial. MATERIALS AND METHODS: We retrospectively investigated the relationship between postoperative EEG DR and the location of 11 electrodes in 6 patients who underwent ANT DBS for refractory epilepsy...
2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27715438/prediction-and-detection-of-seizures-from-simultaneous-thalamic-and-scalp-electroencephalography-recordings
#16
Rosa Q So, Vibhor Krishna, Nicolas Kon Kam King, Huijuan Yang, Zhuo Zhang, Francesco Sammartino, Andres M Lozano, Richard A Wennberg, Cuntai Guan
OBJECTIVE The authors explored the feasibility of seizure detection and prediction using signals recorded from the anterior thalamic nucleus, a major target for deep brain stimulation (DBS) in the treatment of epilepsy. METHODS Using data from 5 patients (13 seizures in total), the authors performed a feasibility study and analyzed the performance of a seizure prediction and detection algorithm applied to simultaneously acquired scalp and thalamic electroencephalography (EEG). The thalamic signal was obtained from DBS electrodes...
June 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27645504/an-unexpectedly-high-rate-of-revisions-and-removals-in-deep-brain-stimulation-surgery-analysis-of-multiple-databases
#17
John D Rolston, Dario J Englot, Philip A Starr, Paul S Larson
INTRODUCTION: Deep brain stimulation (DBS) is an established therapy for movement disorders, and is under active investigation for other neurologic and psychiatric indications. While many studies describe outcomes and complications related to stimulation therapies, the majority of these are from large academic centers, and results may differ from those in general neurosurgical practice. METHODS: Using data from both the Centers for Medicare and Medicaid Services (CMS) and the National Surgical Quality Improvement Program (NSQIP), we identified all DBS procedures related to primary placement, revision, or removal of intracranial electrodes...
December 2016: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/27642815/effectiveness-and-adverse-effects-of-deep-brain-stimulation-umbrella-review-of-meta-analyses
#18
REVIEW
Panagiotis N Papageorgiou, James Deschner, Spyridon N Papageorgiou
Background This umbrella review summarizes the evidence across meta-analyses regarding the effectiveness and adverse effects of deep brain stimulation (DBS). Methods Databases were searched up to March 2015 for meta-analyses of comparative trials in humans assessing the effectiveness or adverse effects of DBS. Data selection, data extraction, and risk of bias assessment were performed by two independent reviewers. Results Seven eligible systematic reviews were included assessing the use of DBS for epilepsy (n = 1), obsessive-compulsive disorder (n = 1), and Parkinson disease (n = 5)...
March 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/27636181/modification-of-electrophysiological-activity-pattern-after-anterior-thalamic-deep-brain-stimulation-for-intractable-epilepsy-report-of-3-cases
#19
Hae Yu Kim, Yun Jung Hur, Heung-Dong Kim, Kang Min Park, Sung Eun Kim, Tae Gyu Hwang
OBJECTIVE Thalamic stimulation can provoke electroencephalography (EEG) synchronization or desynchronization, which can help to reduce the occurrence of seizures in intractable epilepsy, though the underlying mechanism is not fully understood. Therefore, the authors investigated changes in EEG electrical activity to better understand the seizure-reducing effects of deep brain stimulation (DBS) in patients with intractable epilepsy. METHODS Electrical activation patterns in the epileptogenic brains of 3 patients were analyzed using classical low-resolution electromagnetic tomography analysis recursively applied (CLARA)...
June 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27620666/a-new-bio-inspired-stimulator-to-suppress-hyper-synchronized-neural-firing-in-a-cortical-network
#20
Masoud Amiri, Mahmood Amiri, Soheila Nazari, Karim Faez
Hyper-synchronous neural oscillations are the character of several neurological diseases such as epilepsy. On the other hand, glial cells and particularly astrocytes can influence neural synchronization. Therefore, based on the recent researches, a new bio-inspired stimulator is proposed which basically is a dynamical model of the astrocyte biophysical model. The performance of the new stimulator is investigated on a large-scale, cortical network. Both excitatory and inhibitory synapses are also considered in the simulated spiking neural network...
September 13, 2016: Journal of Theoretical Biology
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