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https://www.readbyqxmd.com/read/27931744/learning-from-one-s-mistakes-a-dual-role-for-the-rostromedial-tegmental-nucleus-in-the-encoding-and-expression-of-punished-reward-seeking
#1
Peter J Vento, Nathan W Burnham, Courtney S Rowley, Thomas C Jhou
BACKGROUND: Psychiatric disorders such as addiction and mania are marked by persistent reward seeking despite highly negative or aversive outcomes, but the neural mechanisms underlying this aberrant decision making are unknown. The recently identified rostromedial tegmental nucleus (RMTg) encodes a wide variety of aversive stimuli and sends robust inhibitory projections to midbrain dopamine neurons, leading to the hypothesis that the RMTg provides a brake to reward signaling in response to aversive costs...
October 21, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/27931466/evidence-based-clinical-practice-guideline-for-the-use-of-pit-and-fissure-sealants
#2
(no author information available yet)
BACKGROUND: This article presents evidence-based clinical recommendations for the use of pit-and-fissure sealants on the occlusal surfaces of primary and permanent molars in children and adolescents. A guideline panel convened by the American Dental Association (ADA) Council on Scientific Affairs and the American Academy of Pediatric Dentistry conducted a systematic review and formulated recommendations to address clinical questions in relation to the efficacy, retention, and potential side effects of sealants to prevent dental caries; their efficacy compared with fluoride varnishes; and a head-to-head comparison of the different types of sealant material used to prevent caries on pits-and-fissures of occlusal surfaces...
October 2016: Pediatric Dentistry
https://www.readbyqxmd.com/read/27930542/the-incidence-and-risk-factors-of-postoperative-neurological-deterioration-after-posterior-decompression-with-or-without-instrumented-fusion-for-thoracic-myelopathy
#3
Hui Wang, Lei Ma, Rui Xue, Dalong Yang, Tao Wang, Yanhong Wang, Sidong Yang, Wenyuan Ding
The aim of this study was to explore the incidence and risk factors of postoperative neurological deterioration after posterior decompression with or without instrumented fusion for thoracic myelopathy, and hope to provide references in decision-making and surgical planning for both spinal surgeon and thoracic stenosis patients.By retrieving the medical records from January 2001 to November 2015, 168 patients were retrospectively reviewed. According to the occurrence of postoperative neurological deterioration, patients were divided into 2 groups: neurological deterioration (ND) group and non-ND group...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27928793/-subtype-classification-and-clinicopathological-characteristics-of-gastric-neuroendocrine-neoplasms-an-analysis-of-241-cases
#4
Pan Zhang, Yu Zhang, Chi Zhang, Yanfen Shi, Jixi Liu, Qing Liu, Lili Yu, Miao Wang, Guoming Zou, Jie Lou, Jie Chen, Huangying Tan
OBJECTIVE: To study subtype classification of gastric neuroendocrine neoplasm (NEN) and their clinicopathological characteristics in order to provide reference for clinical practice. METHODS: Clinicopathological data of 241 gastric NEN patients (174 cases from China-Japan Friendship Hospital and 67 cases from The First Affiliated Hospital of Sun Yat-Sen University) between January 2011 and June 2016 were retrospectively summarized. According to serum gastrin, 24-hour intragastric pH monitoring and pathological grade, patients with gastric NEN were divided into 4 types: type I( (hypergastrinemia and achlorhydria, related to autoimmune chronic atrophic gastritis), type II( [hypergastrinemia and Zollinger-Ellison syndrome, related to gastrinoma or multiple endocrine neoplasia type I( (MEN-I()], type III( (sporadic disease with normal serum gastrin level), and type IIII( [poorly differentiated gastric neuroendocrine carcinoma (NEC) and mixed adenoneuroendocrine carcinoma (MANEC)]...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27928785/-interpretation-of-the-latest-guidelines-in-the-treatment-of-gastrointestinal-neuroendocrine-neoplasms
#5
Luohai Chen, Jie Chen, Zhiwei Zhou
Neuroendocrine neoplasms(NEN) is a rare group of tumors with gastrointestinal tract as one of the most common primary locations. The most commonly used guidelines are proposed by European Neuroendocrine Tumor Society (ENETS) and National Comprehensive Cancer Network(NCCN) respectively, while the management of gastrointestinal NEN is generally identical in these two guidelines. Surgery is still the sole curative method which should be considered as the first choice of locoregional NEN. Otherwise, 40% to 50% of patients manifests metastatic disease when diagnosed...
November 25, 2016: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27926438/exploring-individual-differences-in-task-switching-persistence-and-other-personality-traits-related-to-anterior-cingulate-cortex-function
#6
A Umemoto, C B Holroyd
Anterior cingulate cortex (ACC) is involved in cognitive control and decision-making but its precise function is still highly debated. Based on evidence from lesion, neurophysiological, and neuroimaging studies, we have recently proposed a critical role for ACC in motivating extended behaviors according to learned task values (Holroyd and Yeung, 2012). Computational simulations based on this theory suggest a hierarchical mechanism in which a caudal division of ACC selects and applies control over task execution, and a rostral division of ACC facilitates switches between tasks according to a higher task strategy (Holroyd and McClure, 2015)...
2016: Progress in Brain Research
https://www.readbyqxmd.com/read/27923375/the-surgical-strategy-for-eosinophilic-granuloma-of-the-pediatric-cervical-spine-complicated-with-neurologic-deficit-and-or-spinal-instability
#7
Nanzhe Zhong, Wei Xu, Tong Meng, Xinghai Yang, Wangjun Yan, Jianru Xiao
BACKGROUND: Various therapeutic approaches have been proposed for the treatment of pediatric patients with eosinophilic granuloma (EG) of the cervical spine. Our aim was to discuss and present our experience with the individualized surgical intervention of pediatric cervical EG complicated with neurologic deficits and/or spinal instability. METHODS: We retrospectively analyzed the clinical data of 19 children who were diagnosed with cervical EG comor spinal/or spinal instability (evaluated by the Spinal Instability Neoplastic Score, SINS ≥ 7) and treated surgically in our institution...
December 7, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27912111/can-ictal-meg-obviate-the-need-for-phase-ii-monitoring-in-people-with-drug-refractory-epilepsy-a-prospective-observational-study
#8
Bhargavi Ramanujam, Kamal Bharti, Vibhin Viswanathan, Ajay Garg, Madhavi Tripathi, Chandrashekhar Bal, P Sarat Chandra, Manjari Tripathi
PURPOSE: To determine if ictal-magnetoencephalography (ictal-MEG) source localization (SL) added information towards delineating the ictal-onset zone (IOZ), whether and how it helped final decision-making in epilepsy-surgery. METHODS: Definite focal clusters on ictal-MEG were available for 32 DRE-patients, data was analyzed (single equivalent current dipole (ECD) model), SL done. Clinical history, long-term video-EEG (VEEG) monitoring, epilepsy-protocol MRI, FDG-PET, ictal-SPECT and interictal-MEG were discussed at the multispeciality Epilepsy Surgery Case-conference (ESC)...
October 31, 2016: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/27908158/similarity-measurement-of-lung-masses-for-medical-image-retrieval-using-kernel-based-semisupervised-distance-metric
#9
Guohui Wei, He Ma, Wei Qian, Min Qiu
PURPOSE: To develop a new algorithm to measure the similarity between the query lung mass and reference lung mass data set for content-based medical image retrieval (CBMIR). METHODS: A lung mass data set including 746 mass regions of interest (ROIs) was assembled. Among them, 375 ROIs depicted malignant lesions and 371 depicted benign lesions. Each mass ROI is represented by a vector of 26 texture features. A kernel function was employed to map the original data in input space to a feature space...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27904753/skin-flap-complications-after-decompressive-craniectomy-and-cranioplasty-proposal-of-classification-and-treatment-options
#10
Alessandro Di Rienzo, Pier Paol Pangrazi, Michele Riccio, Roberto Colasanti, Ilaria Ghetti, Maurizio Iacoangeli
BACKGROUND: The list of complications reported after decompressive craniectomy (DC) and cranioplasty is progressively increasing. Nonetheless, the exact incidence of these events is still ill-defined. Problems affecting skin flaps after DC and cranioplasty have never been accurately analyzed in papers and their impact on patients' prognosis is largely underestimated. METHODS: In a 10-year time, we treated by DC 450 patients, 344 of whom underwent cranioplasty, either with autologous bone or artificial implants (hydroxyapatite, polyetheretherketone, titanium, polymethylmethacrylate)...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/27903725/hippocampal-damage-increases-deontological-responses-during-moral-decision-making
#11
Cornelia McCormick, Clive R Rosenthal, Thomas D Miller, Eleanor A Maguire
: Complex moral decision making is associated with the ventromedial prefrontal cortex (vmPFC) in humans, and damage to this region significantly increases the frequency of utilitarian judgments. Since the vmPFC has strong anatomical and functional links with the hippocampus, here we asked how patients with selective bilateral hippocampal damage would derive moral decisions on a classic moral dilemmas paradigm. We found that the patients approved of the utilitarian options significantly less often than control participants, favoring instead deontological responses-rejecting actions that harm even one person...
November 30, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27900363/integration-of-genomics-and-histology-revises-diagnosis-and-enables-effective-therapy-of-refractory-cancer-of-unknown-primary-with-pdl1-amplification
#12
Stefan Gröschel, Martin Bommer, Barbara Hutter, Jan Budczies, David Bonekamp, Christoph Heining, Peter Horak, Martina Fröhlich, Sebastian Uhrig, Daniel Hübschmann, Christina Geörg, Daniela Richter, Nicole Pfarr, Katrin Pfütze, Stephan Wolf, Peter Schirmacher, Dirk Jäger, Christof von Kalle, Benedikt Brors, Hanno Glimm, Wilko Weichert, Albrecht Stenzinger, Stefan Fröhling
Identification of the tissue of origin in cancer of unknown primary (CUP) poses a diagnostic challenge and is critical for directing site-specific therapy. Currently, clinical decision-making in patients with CUP primarily relies on histopathology and clinical features. Comprehensive molecular profiling has the potential to contribute to diagnostic categorization and, most importantly, guide CUP therapy through identification of actionable lesions. We here report the case of an advanced-stage malignancy initially mimicking poorly differentiated soft-tissue sarcoma that did not respond to multiagent chemotherapy...
November 2016: Cold Spring Harbor Molecular Case Studies
https://www.readbyqxmd.com/read/27897156/quantitative-evaluation-of-the-mechanical-risks-caused-by-focal-cartilage-defects-in-the-knee
#13
Mikko S Venäläinen, Mika E Mononen, Jari Salo, Lasse P Räsänen, Jukka S Jurvelin, Juha Töyräs, Tuomas Virén, Rami K Korhonen
Focal cartilage lesions can proceed to severe osteoarthritis or remain unaltered even for years. A method to identify high risk defects would be of utmost importance to guide clinical decision making and to identify the patients that are at the highest risk for the onset and progression of osteoarthritis. Based on cone beam computed tomography arthrography, we present a novel computational model for evaluating changes in local mechanical responses around cartilage defects. Our model, based on data obtained from a human knee in vivo, demonstrated that the most substantial alterations around the defect, as compared to the intact tissue, were observed in minimum principal (compressive) strains and shear strains...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27893924/deciding-how-best-to-treat-cartilage-defects
#14
Lucy Oliver-Welsh, Justin W Griffin, Maximilian A Meyer, Matthew E Gitelis, Brian J Cole
The decision-making regarding and treatment of cartilage abnormalities requires a systematic approach. This article reviews the concepts and principles that guide the management of this complex problem. The precise incidence, demographics, and progression of cartilage lesions have not been clearly delineated. Pursuing a patient-centered approach that considers the available nonsurgical and surgical options remains the cornerstone of patient care. The importance of determining concomitant knee pathologies, the proper interpretation and implications of imaging findings, and an accurate determination of the intra-articular and subchondral findings represent the primary elements of the decision analysis...
November 1, 2016: Orthopedics
https://www.readbyqxmd.com/read/27888527/electrophysiological-correlates-of-decision-making-impairment-in-multiple-sclerosis
#15
Elisa Azcárraga-Guirola, Yaneth Rodríguez-Agudelo, Julia Velázquez-Cardoso, Yamel Rito-García, Rodolfo Solís-Vivanco
Although previous studies have shown that patients with multiple sclerosis (MS) may exhibit impaired decision making (DM), the specific neuro-cognitive processes that underlie this deficiency remain unknown. Inefficient DM may occur due to poor option assessment or a deficit in the evaluation of choice outcomes. This study uses, for the first time, the event-related potential (ERP) technique to analyze these DM subprocesses in patients with MS. Sixteen MS patients and nineteen control subjects performed a DM task based on the Iowa Gambling Task while a digital EEG was recorded...
November 5, 2016: European Journal of Neuroscience
https://www.readbyqxmd.com/read/27886714/classification-of-ct-brain-images-based-on-deep-learning-networks
#16
Xiaohong W Gao, Rui Hui, Zengmin Tian
While computerised tomography (CT) may have been the first imaging tool to study human brain, it has not yet been implemented into clinical decision making process for diagnosis of Alzheimer's disease (AD). On the other hand, with the nature of being prevalent, inexpensive and non-invasive, CT does present diagnostic features of AD to a great extent. This study explores the significance and impact on the application of the burgeoning deep learning techniques to the task of classification of CT brain images, in particular utilising convolutional neural network (CNN), aiming at providing supplementary information for the early diagnosis of Alzheimer's disease...
January 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/27885954/novel-biomarker-identification-using-metabolomic-profiling-to-differentiate-radiation-necrosis-and-recurrent-tumor-following-gamma-knife-radiosurgery
#17
Alex Y Lu, Jack L Turban, Eyiyemisi C Damisah, Jie Li, Ahmed K Alomari, Tore Eid, Alexander O Vortmeyer, Veronica L Chiang
OBJECTIVE Following an initial response of brain metastases to Gamma Knife radiosurgery, regrowth of the enhancing lesion as detected on MRI may represent either radiation necrosis (a treatment-related inflammatory change) or recurrent tumor. Differentiation of radiation necrosis from tumor is vital for management decision making but remains difficult by imaging alone. In this study, gas chromatography with time-of-flight mass spectrometry (GC-TOF) was used to identify differential metabolite profiles of the 2 tissue types obtained by surgical biopsy to find potential targets for noninvasive imaging...
November 25, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27870900/to-fear-is-to-gain-the-role-of-fear-recognition-in-risky-decision-making-in-tbi-patients-and-healthy-controls
#18
Annemarie C Visser-Keizer, Herma J Westerhof-Evers, Marleen J J Gerritsen, Joukje van der Naalt, Jacoba M Spikman
Fear is an important emotional reaction that guides decision making in situations of ambiguity or uncertainty. Both recognition of facial expressions of fear and decision making ability can be impaired after traumatic brain injury (TBI), in particular when the frontal lobe is damaged. So far, it has not been investigated how recognition of fear influences risk behavior in healthy subjects and TBI patients. The ability to recognize fear is thought to be related to the ability to experience fear and to use it as a warning signal to guide decision making...
2016: PloS One
https://www.readbyqxmd.com/read/27870462/sex-differences-in-the-functional-lateralization-of-emotion-and-decision-making-in-the-human-brain
#19
REVIEW
Justin Reber, Daniel Tranel
Dating back to the case of Phineas Gage, decades of neuropsychological research have shown that the ventromedial prefrontal cortex (vmPFC) is crucial to both real-world social functioning and abstract decision making in the laboratory (see, e.g., Stuss et al., ; Bechara et al., 1994; Damasio et al., ). Previous research has shown that the relationship between the laterality of individuals' vmPFC lesions and neuropsychological performance is moderated by their sex, whereby there are more severe social, emotional, and decision-making impairments in men with right-side vmPFC lesions and in women with left-side vmPFC lesions (Tranel et al...
January 2, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27867738/evaluation-of-electrical-impedance-spectroscopy-as-an-adjunct-to-dermoscopy-in-short-term-monitoring-of-atypical-melanocytic-lesions
#20
Hannah Ceder, Alexandra Sjöholm Hylén, Ann-Marie Wennberg Larkö, John Paoli
BACKGROUND: Early detection of melanoma is vital for treatment outcome and survival. Short-term sequential digital dermoscopic monitoring (ST-SDDM) involves the capture and assessment of dermoscopic images of one or more atypical melanocytic lesions (AMLs), at baseline and after four months, in order to detect early morphologic changes. Electrical impedance spectroscopy (EIS) is a diagnostic tool with high sensitivity for the detection of malignant melanocytic lesions. OBJECTIVES: The aim of this study was to assess whether EIS, in addition to ST-SDDM, could improve the selection of AMLs requiring surgery...
October 2016: Dermatology Practical & Conceptual
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