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https://www.readbyqxmd.com/read/28211795/a-murine-model-of-a-novel-surgical-architecture-for-proprioceptive-muscle-feedback-and-its-potential-application-to-control-of-advanced-limb-prostheses
#1
Tyler R Clites, Matthew Carty, Shriya Srinivasan, Anthony Zorzos, Hugh Herr
<i>Objective:</i> Proprioceptive mechanisms play a critical role in both reflexive and volitional lower extremity control. Significant strides have been made in the development of bionic limbs that are capable of bi-directional communication with the peripheral nervous system, but none of these systems have been capable of providing physiologically-relevant muscle-based proprioceptive feedback through natural neural pathways. In this study, we present the Agonist-antagonist Myoplastic Interface (AMI), a surgical approach with the capacity to provide graded kinesthetic feedback from a prosthesis through mechanical activation of native mechanoreceptors within residual agonist-antagonist muscle pairs...
February 17, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28211643/postural-analysis-in-a-pediatric-cohort-of-patients-with-ehlers-danlos-syndrome-a-pilot-study
#2
Claudio Lisi, Serena Monteleone, Carmine Tinelli, Berardo Rinaldi, Giuseppe Di Natali, Salvatore Savasta
BACKGROUND: The Ehlers-Danlos Syndrome (EDS) is a rare disorder affecting the connective tissue. EDS patients may suffer of proprioception and balance impairment but all the studies dealing with such symptoms have been addressed to adult subjects. The Study of such impairment in younger patients may lead to a better awareness of own motor abilities and to a focused rehabilitative intervention. Therefore, our work aims to assess the occurrence of these alterations in a pediatric cohort of EDS patients...
February 17, 2017: Minerva Pediatrica
https://www.readbyqxmd.com/read/28211006/surgical-margins-in-nephron-sparing-surgery-for-renal-cell-carcinoma
#3
REVIEW
Dean D Laganosky, Christopher P Filson, Viraj A Master
The oncologic impact of positive surgical margins after nephron-sparing surgery is controversial. Herein, we discuss current data surrounding surgical margins in the operative management of renal cell carcinoma. The prevalence, risk factors, outcomes, and subsequent management of positive surgical margins will be reviewed. Literature suggests that the prevalence of positive surgical margins following kidney surgery varies by practice setting, tumor characteristics, and operation type. For patients undergoing nephron-sparing surgery, it is not necessary to remove a margin of healthy tissue...
January 2017: Current Urology Reports
https://www.readbyqxmd.com/read/28210235/clinical-case-studies-in-psychoanalytic-and-psychodynamic-treatment
#4
REVIEW
Jochem Willemsen, Elena Della Rosa, Sue Kegerreis
This manuscript provides a review of the clinical case study within the field of psychoanalytic and psychodynamic treatment. The method has been contested for methodological reasons and because it would contribute to theoretical pluralism in the field. We summarize how the case study method is being applied in different schools of psychoanalysis, and we clarify the unique strengths of this method and areas for improvement. Finally, based on the literature and on our own experience with case study research, we come to formulate nine guidelines for future case study authors: (1) basic information to include, (2) clarification of the motivation to select a particular patient, (3) information about informed consent and disguise, (4) patient background and context of referral or self-referral, (5) patient's narrative, therapist's observations and interpretations, (6) interpretative heuristics, (7) reflexivity and counter-transference, (8) leaving room for interpretation, and (9) answering the research question, and comparison with other cases...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28209741/frequency-characteristics-of-human-muscle-and-cortical-responses-evoked-by-noisy-achilles-tendon-vibration
#5
Robyn Lynne Mildren, Ryan M Peters, Aimee J Hill, Jean-Sebastien Blouin, Mark Gregory Carpenter, J Timothy Inglis
Noisy stimuli, along with linear systems analysis, have proven to be effective for mapping functional neural connections. We explored the use of noisy (10-115 Hz) Achilles tendon vibration to examine proprioceptive reflexes in the triceps surae muscles in standing healthy young adults (n = 8). We also examined the association between noisy vibration and electrical activity recorded over the sensorimotor cortex using electroencephalography. We applied two-minutes of vibration and recorded ongoing muscle activity of the soleus and gastrocnemii using surface electromyography (EMG)...
February 16, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28208177/feasibility-and-associated-limitations-of-office-based-laryngeal-surgery-using-carbon-dioxide-lasers
#6
Hao-Chun Hu, Shu-Yi Lin, Yi-Ting Hung, Shyue-Yih Chang
Importance: There are few reports evaluating awake, office-based carbon dioxide (CO2) laser surgery for laryngeal lesions. To date, this study was the largest reported case series of office-based laryngeal surgery by fiber delivery CO2 laser. Office-based laryngeal surgical procedures have become increasingly popular. Technical problems and treatment outcomes associated with the use of a CO2 laser for office-based laryngeal surgery have yet to be fully addressed. Objectives: To discuss a single institution's clinical experience with office-based CO2 laser laryngeal surgery and the feasibility and limitations associated with this procedure...
February 16, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28205342/functional-benefits-and-patient-satisfaction-with-upper-blepharoplasty-evaluated-by-objective-and-subjective-outcome-measures
#7
Agnes Galbo Jacobsen, Brian Brost, Henrik Vorum, Janos Hargitai
PURPOSE: To investigate the functional benefits and patient satisfaction with upper blepharoplasty in patients meeting the Danish visitation guidelines for upper blepharoplasty from the Danish Health and Medicines Authority (Sundhedsstyrelsen). METHODS: Before and 3 months after upper blepharoplasty, the following investigations were made: (i) a standard eye examination, (ii) photographic documentation with a normal camera and the infrared camera of a Spectralis Optical Coherence Tomograph and (iii) measurements of the upper visual fields using the blepharoptosis test of Octopus 900...
February 15, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28203025/-trigemino-cardiac-reflex-in-skull-base-surgery
#8
H Z Duan, Y Zhang, L Li, J Y Zhang, Z Q Yi, S D Bao
OBJECTIVE: To explore the mechanism, clinical features, and prognosis of Trigemino-cardiac reflex (TCR) during skull base operations. METHODS: A retrospective analysis was performed on 291 patients with skull base disease from Jan. 2009 to Oct. 2015 in Peking University First Hospital. By reviewing the patients' operative data and anaesthetic electrical record, and we picked out all the patients who suffered from TCR during the operation and analyzed their surgical procedures, clinical features, influence factors, and prognosis...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28202833/-emergency-decompressive-craniotomy-in-the-emergency-room-was-effective-in-severe-acute-subdural-hematoma-treatment-two-case-reports
#9
Naoto Shiomi, Tadashi Echigo, Hideki Oka, Masahiro Nozawa, Michiko Okada, Shiho Hiraizumi, Fumitaka Kato, Hirokazu Koseki, Yoichi Hashimoto, Akihiko Hino
The outcome of severe acute subdural hematoma is unfavorable. In particular, patients with levels of consciousness of Glasgow Coma Scale(GCS)3 or 4 tend to be refractory to treatment. Decompressive craniotomy should be promptly performed to remove hematoma. However, if an operating room is not immediately available, emergency burr hole surgery is sometimes performed in the emergency room(primary care room)prior to craniotomy. A previous study has reported that the interval from injury to surgery influences the outcome of severe acute subdural hematoma...
February 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28202704/nucleus-of-the-solitary-tract-medullary-reflexes-and-clinical-implications
#10
Jeremy K Cutsforth-Gregory, Eduardo E Benarroch
No abstract text is available yet for this article.
February 15, 2017: Neurology
https://www.readbyqxmd.com/read/28202580/spinal-disinhibition-in-experimental-and-clinical-painful-diabetic-neuropathy
#11
Andrew G Marshall, Corinne Lee-Kubli, Shazli Azmi, Michael Zhang, Maryam Ferdousi, Teresa Mixcoatl-Zecuatl, Ioannis N Petropoulos, Georgios Ponirakis, Mark S Fineman, Hassan Fadavi, Katie Frizzi, Mitra Tavakoli, Maria Jeziorska, Corinne G Jolivalt, Andrew J M Boulton, Nathan Efron, Nigel A Calcutt, Rayaz A Malik
Impaired rate dependent depression (RDD) of the Hoffman-reflex is associated with reduced dorsal spinal cord potassium chloride co-transporter expression and impaired spinal GABAA receptor function, indicative of spinal inhibitory dysfunction. We have investigated the pathogenesis of impaired RDD in diabetic rodents exhibiting features of painful neuropathy and the translational potential of this marker of spinal inhibitory dysfunction in human painful diabetic neuropathy. Impaired RDD and allodynia were present in type 1 and type 2 diabetic rats but not in rats with type 1 diabetes receiving insulin supplementation that did not restore normoglycemia...
February 15, 2017: Diabetes
https://www.readbyqxmd.com/read/28202466/time-varying-auditory-gain-control-in-response-to-double-pulse-stimuli-in-harbour-porpoises-is-not-mediated-by-a-stapedial-reflex
#12
Asger Emil Munch Schrøder, Kristian Beedholm, Peter Teglberg Madsen
Echolocating animals reduce their output level and hearing sensitivity, presumably to stabilize the perceived echo intensity during target approaches. In bats this variation in hearing sensitivity is formed by a call-induced stapedial reflex that tapers off over time after the call. Here we test the hypothesis that a similar mechanism exists in toothed whales by subjecting a trained harbour porpoise to a series of double sound pulses varying in delay and frequency, while measuring the magnitudes of the evoked ABRs...
February 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28202410/atypical-antipsychotic-clozapine-reversed-deficit-on-prepulse-inhibition-of-the-acoustic-startle-reflex-produced-by-microinjection-of-doi-into-the-inferior-colliculus-in-rats
#13
Rodolpho Pereira de Oliveira, Karen Yuriko Nagaishi, Regina Cláudia Barbosa Silva
Dysfunctions of the serotonergic system have been suggested to be important in the neurobiology of schizophrenia. Patients with schizophrenia exhibit deficits in an operational measure of sensorimotor gating: prepulse inhibition (PPI) of startle. PPI is the normal reduction in the startle response caused by a low intensity non-startling stimulus (prepulse) which is presented shortly before the startle stimulus (pulse). The hallucinogen 2,5-dimethoxy-4-iodoamphetamine (DOI), a 5-hydroxytryptamine(HT)2 receptor agonist disrupted PPI in rats...
February 12, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28198657/genital-nerve-stimulation-increases-bladder-capacity-after-sci-a-meta-analysis
#14
Dennis J Bourbeau, Graham H Creasey, Steven Sidik, Steven W Brose, Kenneth J Gustafson
BACKGROUND: Neurogenic detrusor overactivity (NDO) often results in decreased bladder capacity, urinary incontinence, and vesico-ureteral reflux. NDO can trigger autonomic dysreflexia and can impair quality of life. Electrical stimulation of the genital nerves (GNS) acutely inhibits reflex bladder contractions and can increase bladder capacity. Quantifying the effect of GNS on bladder capacity and determining what study factors and subject factors influence bladder capacity improvements will inform the design of clinical GNS interventions...
February 15, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28197120/is-inhibition-of-return-modulated-by-involuntary-orienting-of-spatial-attention-an-erp-study
#15
Fada Pan, Xiaogang Wu, Li Zhang
Inhibition of return (IOR) is a mechanism that indicates individuals' faster responses or higher accuracy to targets appearing in the novel location relative to the cued location. According to the "reorienting hypothesis," disengagement from the cued location is necessary for the generation of IOR. However, more and more studies have questioned this theory because of dissociation between voluntary or involuntary spatial orienting and the IOR effect. To further explore the "reorienting hypothesis" of IOR, the present experiment employed an atypical cue-target paradigm which combined a spatially non-predictive peripheral cue that was presumed to trigger IOR with a spatially non-predictive central cue that was used to reflexively trigger a shift of attention...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28196356/therapeutic-hypothermia-provides-variable-protection-against-behavioral-deficits-after-neonatal-hypoxia-ischemia-a-potential-role-for-brain-derived-neurotrophic-factor
#16
Johana Diaz, Suleiman Abiola, Nancy Kim, Oliver Avaritt, Debra Flock, Jenny Yu, Frances J Northington, Raul Chavez-Valdez
BACKGROUND: Despite treatment with therapeutic hypothermia (TH), infants who survive hypoxic ischemic (HI) encephalopathy (HIE) have persistent neurological abnormalities at school age. Protection by TH against HI brain injury is variable in both humans and animal models. Our current preclinical model of hypoxia-ischemia (HI) and TH displays this variability of outcomes in neuropathological and neuroimaging end points with some sexual dimorphism. The detailed behavioral phenotype of this model is unknown...
February 15, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28195895/analysis-of-levator-function-and-ptosis-severity-in-involutional-blepharoptosis
#17
Hsin-Ti Lai, Shih-Feng Weng, Chih-Hau Chang, Shu-Hung Huang, Su-Shin Lee, Kao-Ping Chang, Chung-Sheng Lai
BACKGROUND: Involutional blepharoptosis is the most common type of acquired blepharoptosis. The etiology is believed to be the degeneration of the levator aponeurosis, and levator superioris muscle function was believed to be normal. However, there are a few studies analyzing levator function (LF) in involutional blepharoptosis. Our study aimed to access the LF abnormality in involutional blepharoptosis and analyze the correlation between LF and ptosis severity in involutional blepharoptosis in Taiwan...
February 14, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28195872/rethinking-our-definition-of-postoperative-success-a-comparative-analysis-of-three-upper-eyelid-retraction-repair-techniques-using-novel-metrics-to-capture-functional-and-aesthetic-outcomes
#18
Jacob A Evans, Thomas J E Clark, M Bridget Zimmerman, Richard C Allen, Jeffrey A Nerad, Keith D Carter, Erin M Shriver
PURPOSE: To compare 3 upper eyelid retraction repair techniques and introduce novel metrics, which enhance the analysis of postoperative aesthetic outcomes. METHODS: Retrospective review with Image J 1.48 digital analysis of patients who underwent repair of thyroid-related upper eyelid retraction at the University of Iowa from 1996 to 2014 via 1 of 3 surgical techniques, septum-opening levator recession with Muellerectomy, modified septum-preserving levator recession with Muellerectomy, and modified septum-preserving full-thickness blepharotomy, was conducted...
February 10, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28195228/ejaculation-and-sperm-characteristics-in-men-with-cauda-equina-and-conus-medullaris-syndromes
#19
N Hadiji, R Mieusset, J G Previnaire, E Castel-Lacanal, J M Soler
STUDY DESIGN: Retrospective. OBJECTIVES: The objective of the study was to describe the type of ejaculation in patients with cauda equina (CE) and conus medullaris (CM) lesions, and to analyse sperm quality. SETTING: France. METHODS: One hundred sixty-six patients with CE and CM lesions were included. Diagnosis was based on clinical (no motor responses, sensation or sacral reflexes) and urodynamic assessments (no detrusor activity)...
February 14, 2017: Spinal Cord
https://www.readbyqxmd.com/read/28194135/inaccurate-saccades-and-enhanced-vestibulo-ocular-reflex-suppression-during-combined-eye-head-movements-in-patients-with-chronic-neck-pain-possible-implications-for-cervical-vertigo
#20
Janine L Johnston, Pierre M Daye, Glen T D Thomson
BACKGROUND: The primate ocular motor system is designed to acquire peripheral targets of interest by coordinating visual, vestibular, and neck muscle activation signals. The vestibulo-ocular reflex (VOR) is greatly reduced at the onset of large eye-head (gaze) saccades and resumes before the end of the saccades to stabilize eye-in-orbit and ensure accurate target acquisition. Previous studies have relied on manipulating head movements in normal individuals to study VOR suppression and gaze kinematics...
2017: Frontiers in Neurology
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