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https://www.readbyqxmd.com/read/28454042/cortical-plasticity-and-levodopa-induced-dyskinesias-in-parkinson-s-disease-connecting-the-dots-in-a-multicomponent-network
#1
REVIEW
Roopa Rajan, Traian Popa, Angelo Quartarone, Maria Felice Ghilardi, Asha Kishore
Levodopa-induced dyskinesias are motor complications following long term dopaminergic therapy in Parkinson's disease (PD). Impaired brain plasticity resulting in the creation of aberrant motor maps intended to encode normal voluntary movement is proposed to result in the development of dyskinesias. Traditionally, the various nodes in the motor network like the striato-cortical and the cerebello-thalamic loops were thought to function independent of each other with little communication among them. Anatomical evidence from primates revealed the existence of reciprocal loops between the basal ganglia and the cerebellum providing an anatomical basis for communication between the motor network loops...
April 10, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28453998/sleep-slow-oscillation-and-plasticity
#2
REVIEW
Igor Timofeev, Sylvain Chauvette
It is well documented that sleep contributes to memory consolidation and it is also accepted that long-term synaptic plasticity plays a critical role in memory formation. The mechanisms of this sleep-dependent memory formation are unclear. Two main hypotheses are proposed. According to the first one, synapses are potentiated during wake; and during sleep they are scaled back to become available for the learning tasks in the next day. The other hypothesis is that sleep slow oscillations potentiate synapses that were depressed due to persistent activities during the previous day and that potentiation provides physiological basis for memory consolidation...
April 25, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28453486/cognitive-deficits-after-cerebral-ischemia-and-underlying-dysfunctional-plasticity-potential-targets-for-recovery-of-cognition
#3
Holly M Stradecki-Cohan, Charles H Cohan, Ami P Raval, Kunjan R Dave, Diego Reginensi, Rolando A Gittens, Mehdi Youbi, Miguel A Perez-Pinzon
Cerebral ischemia affects millions of people worldwide and survivors suffer from long-term functional and cognitive deficits. While stroke and cardiac arrest are typically considered when discussing ischemic brain injuries, there is much evidence that smaller ischemic insults underlie neurodegenerative diseases, including Alzheimer's disease. The "regenerative" capacity of the brain relies on several aspects of plasticity that are crucial for normal functioning; less affected brain areas may take over function previously performed by irreversibly damaged tissue...
April 25, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28453339/the-painful-sacrifice-the-epidemiology-of-hand-injuries-during-the-holy-festivals-in-the-sultanate-of-oman-a-10-year-case-control-study
#4
Sultan Al-Shaqsi, Taimoor Al-Bulushi, Ayman Al-Salmi, Ammar Al-Kashmiri, Ali Al-Lawatti
BACKGROUND: The human hand is an important functional and sensory organ. Its complex anatomy reflects its important functional capabilities. Many Muslim countries observe the holy festivals with a traditional sacrifice of an animal in order to share the meat (basic commodity) with beloved ones. During such festivals hand injuries have been reported to increase. This study aimed to compare cases and controls of hand injuries treated at the national trauma center in the Sultanate of Oman during a 10-year time period...
May 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28447290/regulation-of-cardiomyocyte-t-tubular-structure-opportunities-for-therapy
#5
REVIEW
Ornella Manfra, Michael Frisk, William E Louch
PURPOSE OF REVIEW: Membrane invaginations called t-tubules play an integral role in triggering cardiomyocyte contraction, and their disruption during diseases such as heart failure critically impairs cardiac performance. In this review, we outline the growing understanding of the malleability of t-tubule structure and function, and highlight emerging t-tubule regulators which may be exploited for novel therapies. RECENT FINDINGS: New technologies are revealing the nanometer scale organization of t-tubules, and their functional junctions with the sarcoplasmic reticulum called dyads, which generate Ca(2+) sparks...
April 26, 2017: Current Heart Failure Reports
https://www.readbyqxmd.com/read/28445383/discussion-business-education-for-plastic-surgeons-a-systematic-review-development-and-implementation-of-a-business-principles-curriculum-in-a-residency-program
#6
C Scott Hultman
No abstract text is available yet for this article.
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28445375/a-new-classification-of-three-dimensional-printing-technologies-systematic-review-of-three-dimensional-printing-for-patient-specific-craniomaxillofacial-surgery
#7
Carly A Jacobs, Alexander Y Lin
BACKGROUND: Three-dimensional printing technology has been advancing in surgical applications. This systematic review examines its patient-specific applications in craniomaxillofacial surgery. METHODS: Terms related to "three-dimensional printing" and "surgery" were searched on PubMed on May 4, 2015; 313 unique articles were returned. Inclusion and exclusion criteria concentrated on patient-specific surgical applications, yielding 141 full-text articles, of which 33 craniomaxillofacial articles were analyzed...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28445359/the-impact-of-body-contouring-procedures-on-urologic-outcomes-in-massive-weight-loss-patients
#8
Oren P Mushin, Franca S Kraenzlin, Anees Fazili, Ahmed Ghazi, Ronald P Bossert
BACKGROUND: Post-massive weight loss body contouring is a growing area of plastic surgery. Studies have shown preexisting urinary incontinence amelioration in patients undergoing abdominal body-contouring procedures. These studies are small, focus on cosmetic abdominoplasties, and lack use of standardized surveys. The purpose of this study was to evaluate urinary incontinence endpoints in massive weight loss patients undergoing body-contouring procedures. METHODS: A retrospective review was conducted over a 6-year period...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28441759/synaptic-homeostasis-and-its-immunological-disturbance-in-neuromuscular-junction-disorders
#9
REVIEW
Masaharu Takamori
In the neuromuscular junction, postsynaptic nicotinic acetylcholine receptor (nAChR) clustering, trans-synaptic communication and synaptic stabilization are modulated by the molecular mechanisms underlying synaptic plasticity. The synaptic functions are based presynaptically on the active zone architecture, synaptic vesicle proteins, Ca(2+) channels and synaptic vesicle recycling. Postsynaptically, they are based on rapsyn-anchored nAChR clusters, localized sensitivity to ACh, and synaptic stabilization via linkage to the extracellular matrix so as to be precisely opposed to the nerve terminal...
April 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28441600/microplastics-in-the-antarctic-marine-system-an-emerging-area-of-research
#10
REVIEW
Catherine L Waller, Huw J Griffiths, Claire M Waluda, Sally E Thorpe, Iván Loaiza, Bernabé Moreno, Cesar O Pacherres, Kevin A Hughes
It was thought that the Southern Ocean was relatively free of microplastic contamination; however, recent studies and citizen science projects in the Southern Ocean have reported microplastics in deep-sea sediments and surface waters. Here we reviewed available information on microplastics (including macroplastics as a source of microplastics) in the Southern Ocean. We estimated primary microplastic concentrations from personal care products and laundry, and identified potential sources and routes of transmission into the region...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28441509/patient-safety-and-quality-improvement-in-otolaryngology-education-a-systematic-review
#11
John D Gettelfinger, P Barrett Paulk, Cecelia E Schmalbach
Objective The breadth and depth of patient safety/quality improvement (PS/QI) research dedicated to otolaryngology-head and neck surgery (OHNS) education remains unknown. This systematic review aims to define this scope and to identify knowledge gaps as well as potential areas of future study to improved PS/QI education and training in OHNS. Data Sources A computerized Ovid/Medline database search was conducted (January 1, 1965, to May 15, 2015). Similar computerized searches were conducted using Cochrane Database, PubMed, and Google Scholar...
April 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28441118/mechanisms-of-hippocampal-aging-and-the-potential-for-rejuvenation
#12
Xuelai Fan, Elizabeth G Wheatley, Saul A Villeda
The past two decades have seen remarkable progress in our understanding of the multifactorial drivers of hippocampal aging and cognitive decline. Recent findings have also raised the possibility of functional rejuvenation in the aged hippocampus. In this review, we aim to synthesize the mechanisms that drive hippocampal aging and evaluate critically the potential for rejuvenation. We discuss the functional changes in synaptic plasticity and regenerative potential of the aged hippocampus, followed by mechanisms of microglia aging, and assess the cross talk between these proaging processes...
April 24, 2017: Annual Review of Neuroscience
https://www.readbyqxmd.com/read/28441072/pro-tumor-activities-of-macrohpages-in-the-progression-of-melanoma
#13
Huafeng Wang, Luhong Yang, Dong Wang, Qi Zhang, Lijuan Zhang
Macrophages are located in essentially all tissues due to their "janitor" function. Macrophages can exert either anti- or pro-tumor activities depending upon the specific tumor microenvironment they inhabit. Substantial evidence indicates that macrophages, owing to their plasticity, can be reeducated to adopt a protumoral phenotype within a tumor microenvironment through the help of growth factors in the microenvironment and intercellular interactions. As the lethality of malignant melanoma is due to its aggressive capacity for metastasis and resistance to therapy, considerable effort has gone toward treatment of metastatic melanoma...
April 25, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28440937/microplastics-are-not-important-for-the-cycling-and-bioaccumulation-of-organic-pollutants-in-the-oceans-but-should-microplastics-be-considered-pops-themselves
#14
Rainer Lohmann
The role of microplastic particles in the cycling and bioaccumulation of persistent organic pollutants (POPs) is discussed. Five common concepts, sometimes misconceptions, about the role of microplastics are reviewed. While there is ample evidence that microplastics accumulate high concentrations of POPs, this does not result in microplastics being important for the global dispersion of POPs. Similarly, there is scant evidence that microplastics are an important transfer vector of POPs into animals, but possibly for plastic additives (flame retardants)...
May 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28440687/the-consequence-of-spatial-visual-processing-dysfunction-caused-by-traumatic-brain-injury-tbi
#15
William V Padula, Jose E Capo-Aponte, William V Padula, Eric L Singman, Jonathan Jenness
OBJECTIVE: A bi-modal visual processing model is supported by research to affect dysfunction following a traumatic brain injury (TBI). TBI causes dysfunction of visual processing affecting binocularity, spatial orientation, posture and balance. Research demonstrates that prescription of prisms influence the plasticity between spatial visual processing and motor-sensory systems improving visual processing and reducing symptoms following a TBI. RATIONALE: The rationale demonstrates that visual processing underlies the functional aspects of binocularity, balance and posture...
April 25, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28440493/the-extracellular-signal-regulated-kinase-1-2-pathway-in-neurological-diseases-a-potential-therapeutic-target-review
#16
Jing Sun, Guangxian Nan
Signaling pathways are critical modulators of a variety of physiological and pathological processes, and the abnormal activation of some signaling pathways can contribute to disease progression in various conditions. As a result, signaling pathways have emerged as an important tool through which the occurrence and development of diseases can be studied, which may then lead to the development of novel drugs. Accumulating evidence supports a key role for extracellular signal-regulated kinase 1/2 (ERK1/2) signaling in the embryonic development of the central nervous system (CNS) and in the regulation of adult brain function...
April 21, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28438343/developmental-and-transmittable-origins-of-obesity-associated-health-disorders
#17
REVIEW
Arin K Oestreich, Kelle H Moley
The current global obesity pandemic is clearly linked to both the increasing prevalence of, and preference for, foods high in calories, specifically fat and sucrose, and declining levels of daily physical activity. A less commonly discussed possible explanation is that risk of obesity begins in utero as a result of developmental plasticity during early life. This idea fits into the broader Developmental Origins of Health and Diseases (DOHAD) hypothesis, which holds that stressful in utero exposure manifests as disease in adulthood...
April 21, 2017: Trends in Genetics: TIG
https://www.readbyqxmd.com/read/28435996/cognitive-effects-of-air-pollution-exposures-and-potential-mechanistic-underpinnings
#18
REVIEW
J L Allen, C Klocke, K Morris-Schaffer, K Conrad, M Sobolewski, D A Cory-Slechta
PURPOSE OF REVIEW: This review sought to address the potential for air pollutants to impair cognition and mechanisms by which that might occur. RECENT FINDINGS: Air pollution has been associated with deficits in cognitive functions across a wide range of epidemiological studies, both with developmental and adult exposures. Studies in animal models are significantly more limited in number, with somewhat inconsistent findings to date for measures of learning, but show more consistent impairments for short-term memory...
April 24, 2017: Current Environmental Health Reports
https://www.readbyqxmd.com/read/28435775/the-mechanical-properties-of-nanowires
#19
REVIEW
Shiliang Wang, Zhiwei Shan, Han Huang
Applications of nanowires into future generation nanodevices require a complete understanding of the mechanical properties of the nanowires. A great research effort has been made in the past two decades to understand the deformation physics and mechanical behaviors of nanowires, and to interpret the discrepancies between experimental measurements and theoretical predictions. This review focused on the characterization and understanding of the mechanical properties of nanowires, including elasticity, plasticity, anelasticity and strength...
April 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28435670/type-1-metabotropic-glutamate-receptor-signaling-in-cerebellar-purkinje-cells-in-health-and-disease
#20
REVIEW
Masanobu Kano, Takaki Watanabe
The cerebellum is a brain structure involved in coordination, control, and learning of movements, as well as certain aspects of cognitive function. Purkinje cells are the sole output neurons from the cerebellar cortex and therefore play crucial roles in the overall function of the cerebellum. The type-1 metabotropic glutamate receptor (mGluR1) is a key "hub" molecule that is critically involved in the regulation of synaptic wiring, excitability, synaptic response, and synaptic plasticity of Purkinje cells. In this review, we aim to highlight how mGluR1 controls these events in Purkinje cells...
2017: F1000Research
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