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https://www.readbyqxmd.com/read/28809926/impact-of-fortified-versus-unfortified-lipid-based-supplements-on-morbidity-and-nutritional-status-a-randomised-double-blind-placebo-controlled-trial-in-ill-gambian-children
#1
Stefan A Unger, Saikou Drammeh, Jahid Hasan, Kabiru Ceesay, Edrisa Sinjanka, Sainey Beyai, Bakary Sonko, Bai Lamin Dondeh, Anthony J Fulford, Sophie E Moore, Andrew M Prentice
BACKGROUND: Multiple micronutrients (MMN) are commonly prescribed in pediatric primary healthcare in sub-Saharan Africa to improve nutritional status and appetite without evidence for their effectiveness or international clinical guidelines. Community-wide MMN supplementation has shown limited and heterogeneous impact on growth and morbidity. Short-term ready-to-use therapeutic foods in acutely sick children in a hospital setting also had limited efficacy regarding subsequent growth. The effectiveness of MMN in improving morbidity or growth in sick children presenting for primary care has not been assessed...
August 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28800468/the-mmn-as-a-viable-and-objective-marker-of-auditory-development-in-ci-users
#2
REVIEW
Risto Näätänen, Bjørn Petersen, Ritva Torppa, Eila Lonka, Peter Vuust
In the present article, we review the studies on the use of the mismatch negativity (MMN) as a tool for an objective assessment of cochlear-implant (CI) functioning after its implantation and as a function of time of CI use. The MMN indexes discrimination of different sound stimuli with a precision matching with that of behavioral discrimination and can therefore be used as its objective index. Importantly, these measurements can be reliably carried out even in the absence of attention and behavioral responses and therefore they can be extended to populations that are not capable of behaviorally reporting their perception such as infants and different clinical patient groups...
July 20, 2017: Hearing Research
https://www.readbyqxmd.com/read/28794206/lipid-based-nutrient-supplements-during-pregnancy-and-lactation-did-not-affect-human-milk-oligosaccharides-and-bioactive-proteins-in-a-randomized-trial
#3
Josh M Jorgensen, Charles Arnold, Per Ashorn, Ulla Ashorn, David Chaima, Yin Bun Cheung, Jasmine Cc Davis, Yue-Mei Fan, Elisha Goonatilleke, Emma Kortekangas, Chiza Kumwenda, Carlito B Lebrilla, Kenneth Maleta, Sarah M Totten, Lauren D Wu, Kathryn G Dewey
Background: Human milk oligosaccharides (HMOs) and bioactive proteins are beneficial to infant health. Recent evidence suggests that maternal nutrition may affect the amount of HMOs and proteins in breast milk; however, the effect of nutrient supplementation on HMOs and bioactive proteins has not yet been well studied.Objective: We aimed to determine whether lipid-based nutrient supplements (LNSs) affect milk bioactive protein and HMO concentrations at 6 mo postpartum in women in rural Malawi. These are secondary outcomes of a previously published randomized controlled trial...
August 9, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28779851/a-tale-of-two-sites-differential-impairment-of-frequency-and-duration-mismatch-negativity-across-a-primarily-inpatient-versus-a-primarily-outpatient-site-in-schizophrenia
#4
Migyung Lee, Pejman Sehatpour, Elisa C Dias, Gail S Silipo, Joshua T Kantrowitz, Antigona M Martinez, Daniel C Javitt
Deficits in mismatch negativity (MMN) generation are among the best replicated neurophysiological deficits in schizophrenia, with reduced amplitude reflecting impaired information processing at the level of supratemporal auditory cortex. Differential patterns of MMN dysfunction according to deviant types have been reported across studies, with some research groups showing impairment in duration MMN but not frequency MMN, and other research groups reporting both findings. We evaluate the hypothesis that recruitment setting, reflecting current functional status, might be an important determinant of the pattern of MMN dysfunction...
August 2, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28768598/mismatch-negativity-in-preclinical-models-of-schizophrenia
#5
Robert E Featherstone, Olya Melnychenko, Steven J Siegel
Schizophrenia is a mental disorder associated with profoundly disruptive positive and negative symptomology that result in difficulties building close relationships with others, performing daily tasks and sustaining independent living, resulting in poor social, vocational and occupational attainment (functional outcome). Mismatch Negativity (MMN) is a change in the sensory event-related potential that occurs in response to deviation from an established pattern of stimulation. Patients with schizophrenia show a reduction in MMN that is positively associated with impaired cognition and poor functional outcome...
July 30, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28765608/endocannabinoid-modulation-of-stimulus-specific-adaptation-in-inferior-colliculus-neurons-of-the-rat
#6
C Valdés-Baizabal, G G Parras, Y A Ayala, M S Malmierca
Cannabinoid receptors (CBRs) are widely distributed in the brain, including the inferior colliculus (IC). Here, we aim to study whether endocannabinoids influence a specific type of neuronal adaptation, namely, stimulus-specific adaptation (SSA) found in some IC neurons. SSA is important because it has been found as early as the level of the midbrain and therefore it may be a neuronal correlate of early indices of deviance detection. Furthermore, recent studies have demonstrated a direct link between SSA and MMN, that is widely used as an outcome measure in a variety of human neurodegenerative disorders...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28763806/noise-equally-degrades-central-auditory-processing-in-2-and-4-year-old-children
#7
Elina Niemitalo-Haapola, Sini Haapala, Teija Kujala, Antti Raappana, Tiia Kujala, Eira Jansson-Verkasalo
Purpose: The aim of this study was to investigate developmental and noise-induced changes in central auditory processing indexed by event-related potentials in typically developing children. Method: P1, N2, and N4 responses as well as mismatch negativities (MMNs) were recorded for standard syllables and consonants, frequency, intensity, vowel, and vowel duration changes in silent and noisy conditions in the same 14 children at the ages of 2 and 4 years. Results: The P1 and N2 latencies decreased and the N2, N4, and MMN amplitudes increased with development of the children...
August 1, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28762574/a-comparative-study-of-brachial-plexus-sonography-and-magnetic-resonance-imaging-in-chronic-inflammatory-demyelinating-neuropathy-and-multifocal-motor-neuropathy
#8
H S Goedee, B A Jongbloed, J-T H van Asseldonk, J Hendrikse, A F J E Vrancken, H Franssen, S Nikolakopoulos, L H Visser, W L van der Pol, L H van den Berg
BACKGROUND AND PURPOSE: To compare the performance of neuroimaging techniques, i.e. high-resolution ultrasound (HRUS) and magnetic resonance imaging (MRI), when applied to the brachial plexus, as part of the diagnostic work-up of chronic inflammatory demyelinating neuropathy (CIDP) and multifocal motor neuropathy (MMN). METHODS: Fifty-one incident, treatment-naive patients with CIDP (n = 23) or MMN (n = 28) underwent imaging of the brachial plexus using (i) a standardized MRI protocol to assess enlargement or T2 hyperintensity and (ii) bilateral HRUS to determine the extent of nerve (root) enlargement...
August 1, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28761096/electrophysiological-evidence-for-pre-attention-information-processing-improvement-in-patients-with-central-hemiplegic-after-peripheral-nerve-rewiring-a-pilot-study
#9
Tie Li, Xu-Yun Hua, Mou-Xiong Zheng, Yu-Lan Zhu, Yan-Qun Qiu, Yun-Dong Shen, Jian-Guang Xu, Yu-Dong Gu, Wen-Dong Xu
Central neurologic injury (CNI) causes dysfunctions not only in limbs but also in cognitive ability. We applied a novel peripheral nerve rewiring (PNR) surgical procedure to restore limb function. Here, we conducted a prospective study to develop estimates for the extent of preattentive processes to cognitive function changes in CNI patients after PNR. Auditory mismatch negativity (MMN) was measured in CNI patients who received the PNR surgery plus conventional rehabilitation treatment. During the 2-year follow-up, the MMN was enhanced with increased amplitude in the PNR plus rehabilitation group compared to the rehabilitation-only group as the experiment progressed, and progressive improvement in behavioural examination tests was also observed...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28760539/dissociable-auditory-mismatch-response-and-connectivity-patterns-in-adolescents-with-schizophrenia-and-adolescents-with-bipolar-disorder-with-psychosis-a-magnetoencephalography-study
#10
Sven Braeutigam, Danai Dima, Sophia Frangou, Anthony James
BACKGROUND: There is overlap between schizophrenia and bipolar disorder regarding genetic risk as well as neuropsychological and structural brain deficits. Finding common and distinct event-response potential (ERP) responses and connectivity patterns may offer potential biomarkers to distinguish the disorders. OBJECTIVE: To examine the neuronal auditory response elicited by a roving mismatch negativity (MMN) paradigm using magnetoencephalography (MEG). PARTICIPANTS: 15 Adolescents with schizophrenia (ASZ), 16 adolescents with bipolar disorder with psychosis (ABP), and 14 typically developing individuals (TD) METHODS: The data were analysed using time-series techniques and dynamic causal modelling (DCM)...
July 28, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28756554/do-traditional-sheep-breeders-perform-conscious-selection-an-example-from-a-participatory-breeding-program-of-morada-nova-sheep
#11
Janaina Kelli Gomes Arandas, Ângelo Giuseppe Chaves Alves, Olivardo Facó, Ernandes Barboza Belchior, Luciana Shiotsuki, Paulo Márcio Barbosa de Arruda Leite, Maria Norma Ribeiro
The implementation of sustainable breeding programs requires genetic breeding strategies that are appropriate for the reality production systems. It is also essential that the choice of animal selection criteria be based on breeders' knowledge and objectives. This work is an ethno-zootechnical study of the Morada Nova sheep breed and its crossbreeds. The goals of this study were to register and analyze indigenous breeders' knowledge and practices regarding animal selection criteria and to generate technical information to support a participatory breeding program of the breed...
July 30, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28740829/no-association-between-symptom-severity-and-mmn-impairment-in-schizophrenia-a-meta-analytic-approach
#12
Molly A Erickson, Matthew Albrecht, Abigail Ruffle, Leah Fleming, Philip Corlett, James Gold
The mismatch negativity (MMN) is an event-related potential that is consistently attenuated in people with schizophrenia. Within the predictive coding model of psychosis, MMN impairment is thought to reflect the same prediction failures that are also thought to underlie the development and crystallization of delusions and hallucinations. However, the true relationship between symptom severity and MMN impairment across studies has not yet been established. The present meta-analysis used meta-regressions to examine the relationship between MMN impairment (quantified as Hedges' g) and PANSS positive and negative symptom totals across 62 and 68 samples, respectively...
September 2017: Schizophrenia Research. Cognition
https://www.readbyqxmd.com/read/28739134/nmda-receptor-modulation-by-dextromethorphan-and-acute-stress-selectively-alters-electroencephalographic-indicators-of-partial-report-processing
#13
Lisa J Weckesser, Sören Enge, Philipp Riedel, Clemens Kirschbaum, Robert Miller
Proceeding from a biophysical network model, the present study hypothesized that glutamatergic neurotransmission across the NMDA receptor (NMDAR) plays a key role in visual perception and its modulation by acute stress. To investigate these hypotheses, behavioral and electroencephalographic (EEG) indicators of partial report task processing were assessed in twenty-four healthy young men who randomly received a non-competitive NMDAR antagonist (0.8 mg/kg dextromethorphan, DXM) or a placebo, and concurrently accomplished a stress-induction (MAST) or control protocol in three consecutive sessions...
July 21, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28729820/auditory-mismatch-negativity-in-response-to-changes-of-counter-balanced-interaural-time-and-level-differences
#14
Christian F Altmann, Ryuhei Ueda, Shigeto Furukawa, Makio Kashino, Tatsuya Mima, Hidenao Fukuyama
Interaural time differences (ITD) and interaural level differences (ILD) both signal horizontal sound source location. To achieve a unified percept of our acoustic environment, these two cues require integration. In the present study, we tested this integration of ITD and ILD with electroencephalography (EEG) by measuring the mismatch negativity (MMN). The MMN can arise in response to spatial changes and is at least partly generated in auditory cortex. In our study, we aimed at testing for an MMN in response to stimuli with counter-balanced ITD/ILD cues...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28717088/long-term-effects-of-intravenous-cyclophosphamide-in-combination-with-mesna-provided-intravenously-and-via-bladder-perfusion-in-a-patient-with-severe-multifocal-motor-neuropathy
#15
Eri Iwasawa, Takuya Ohkubo, Tadashi Kanouchi, Takashi Kanda, Hidehiro Mizusawa, Takanori Yokota
A 25-year-old woman presenting with progressive muscle weakness in the distal extremities in the absence of sensory involvement for 2 years was diagnosed with multifocal motor neuropathy (MMN). Her disease was difficult to manage with various immunosuppressants, and the muscle weakness eventually progressed to involve the respiratory muscles, necessitating mechanical ventilation. Intravenous cyclophosphamide (CY) dramatically improved her symptoms, and she has since maintained her ambulatory status for 18 years with intermittent CY therapy...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28715718/when-speaker-identity-is-unavoidable-neural-processing-of-speaker-identity-cues-in-natural-speech
#16
Alba Tuninetti, Kateřina Chládková, Varghese Peter, Niels O Schiller, Paola Escudero
Speech sound acoustic properties vary largely across speakers and accents. When perceiving speech, adult listeners normally disregard non-linguistic variation caused by speaker or accent differences, in order to comprehend the linguistic message, e.g. to correctly identify a speech sound or a word. Here we tested whether the process of normalizing speaker and accent differences, facilitating the recognition of linguistic information, is found at the level of neural processing, and whether it is modulated by the listeners' native language...
July 14, 2017: Brain and Language
https://www.readbyqxmd.com/read/28712970/cortical-responses-to-tone-and-phoneme-mismatch-as-a-predictor-of-dyslexia-a-systematic-review
#17
Susanne Volkmer, Gerd Schulte-Körne
Evidence from event-related-potential (ERP) studies has repeatedly shown differences in the perception and processing of auditory stimuli in children with dyslexia compared to control children. The mismatch negativity (MMN) - an ERP component reflecting passive auditory change detection ability - has been found to be reduced, not only in children with a diagnosis of dyslexia, but also in infants and preschool children at risk of developing dyslexia. However, the results are controversial due to the different methods, age of the children and stimuli used...
July 13, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28711476/treatment-in-early-psychosis-with-n-acetyl-cysteine-for-6months-improves-low-level-auditory-processing-pilot-study
#18
Chrysa Retsa, Jean-François Knebel, Eveline Geiser, Carina Ferrari, Raoul Jenni, Margot Fournier, Luis Alameda, Philipp S Baumann, Stephanie Clarke, Philippe Conus, Kim Q Do, Micah M Murray
Sensory impairments constitute core dysfunctions in schizophrenia. In the auditory modality, impaired mismatch negativity (MMN) has been observed in chronic schizophrenia and may reflect N-methyl-d-aspartate (NMDA) hypo-function, consistent with models of schizophrenia based on oxidative stress. Moreover, a recent study demonstrated deficits in the N100 component of the auditory evoked potential (AEP) in early psychosis patients. Previous work has shown that add-on administration of the glutathione precursor N-acetyl-cysteine (NAC) improves the MMN and clinical symptoms in chronic schizophrenia...
July 12, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28711472/interactive-effects-of-an-n-methyl-d-aspartate-receptor-antagonist-and-a-nicotinic-acetylcholine-receptor-agonist-on-mismatch-negativity-implications-for-schizophrenia
#19
Holly K Hamilton, Deepak C D'Souza, Judith M Ford, Brian J Roach, Naomi S Kort, Kyung-Heup Ahn, Savita Bhakta, Mohini Ranganathan, Daniel H Mathalon
N-methyl-d-aspartate glutamate receptor (NMDAR) hypofunction has been implicated in the pathophysiology of schizophrenia, including auditory processing abnormalities reflected by the mismatch negativity (MMN) event-related potential component. Evidence suggesting cognitive benefits from nicotine administration, together with the high rate of cigarette use in patients with schizophrenia, has stimulated interest in whether nicotine modulates NMDAR hypofunction. We examined the interactive effects of ketamine, an NMDAR antagonist that produces transient schizophrenia-like neurophysiological effects, and nicotine, a nicotinic acetylcholine receptor (nAChR) agonist, in 30 healthy volunteers to determine whether nicotine prevents or attenuates MMN abnormalities...
July 12, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28709770/meta-analysis-of-mismatch-negativity-to-simple-versus-complex-deviants-in-schizophrenia
#20
Michael Avissar, Shanghong Xie, Blair Vail, Javier Lopez-Calderon, Yuanjia Wang, Daniel C Javitt
Mismatch negativity (MMN) deficits in schizophrenia (SCZ) have been studied extensively since the early 1990s, with the vast majority of studies using simple auditory oddball task deviants that vary in a single acoustic dimension such as pitch or duration. There has been a growing interest in using more complex deviants that violate more abstract rules to probe higher order cognitive deficits. It is still unclear how sensory processing deficits compare to and contribute to higher order cognitive dysfunction, which can be investigated with later attention-dependent auditory event-related potential (ERP) components such as a subcomponent of P300, P3b...
July 11, 2017: Schizophrenia Research
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