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https://www.readbyqxmd.com/read/28229524/dermal-morphological-changes-following-salicylic-acid-peeling-and-microdermabrasion
#1
Amira A Abdel-Motaleb, Eman E Abu-Dief, Mahmoud Ra Hussein
BACKGROUND: Microdermabrasion and chemical peeling are popular, inexpensive, and safe methods for treatment of some skin disorders and to rejuvenate skin. OBJECTIVES: To study the alterations of the dermal connective tissue following salicylic acid peeling and microdermabrasion. METHODS: Twenty patients were participated in our study. All participants underwent facial salicylic acid 30% peel or microdermabrasion (10 cases in each group) weekly for 6 weeks...
February 22, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28228543/characterization-of-dependencies-between-growth-and-division-in-budding-yeast
#2
Michael B Mayhew, Edwin S Iversen, Alexander J Hartemink
Cell growth and division are processes vital to the proliferation and development of life. Coordination between these two processes has been recognized for decades in a variety of organisms. In the budding yeast Saccharomyces cerevisiae, this coordination or 'size control' appears as an inverse correlation between cell size and the rate of cell-cycle progression, routinely observed in G1 prior to cell division commitment. Beyond this point, cells are presumed to complete S/G2/M at similar rates and in a size-independent manner...
February 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28227965/multiscale-brain-machine-interface-decoders
#3
Han-Lin Hsieh, Maryam M Shanechi, Han-Lin Hsieh, Maryam M Shanechi, Han-Lin Hsieh, Maryam M Shanechi
Brain-machine interfaces (BMI) have vastly used a single scale of neural activity, e.g., spikes or electrocorticography (ECoG), as their control signal. New technology allows for simultaneous recording of multiple scales of neural activity, from spikes to local field potentials (LFP) and ECoG. These advances introduce the new challenge of modeling and decoding multiple scales of neural activity jointly. Such multi-scale decoding is challenging for two reasons. First, spikes are discrete-valued and ECoG/LFP are continuous-valued, resulting in fundamental differences in statistical characteristics...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227770/randomness-in-resting-state-functional-connectivity-matrices
#4
Victor M Vergara, Vince Calhoun, Victor M Vergara, Vince Calhoun, Vince Calhoun, Victor M Vergara
Separate brain regions exhibit synchronous intrinsic activity used to assess connectivity patterns known to appear among brain areas. Connectivity is evaluated from functional magnetic resonance imaging (fMRI) measuring the blood oxygen level dependent signal (BOLD) signal. Extensive research has revealed a distinctive pattern of connectivity among brain areas that can be visualized through a functional connectivity matrix (FCM) matrix. As in any measurement, BOLD signals are subject to contamination from noise and nuisances unrelated to brain's intrinsic activity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227367/statistical-identification-of-stimulus-activated-network-nodes-in-multi-neuron-voltage-sensitive-dye-optical-recordings
#5
Elham Fathiazar, Jorn Anemuller, Jutta Kretzberg, Elham Fathiazar, Jorn Anemuller, Jutta Kretzberg, Elham Fathiazar, Jutta Kretzberg, Jorn Anemuller
Voltage-Sensitive Dye (VSD) imaging is an optical imaging method that allows measuring the graded voltage changes of multiple neurons simultaneously. In neuroscience, this method is used to reveal networks of neurons involved in certain tasks. However, the recorded relative dye fluorescence changes are usually low and signals are superimposed by noise and artifacts. Therefore, establishing a reliable method to identify which cells are activated by specific stimulus conditions is the first step to identify functional networks...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227324/analysis-of-the-non-stationarity-of-neural-activity-during-an-auditory-oddball-task-in-schizophrenia
#6
P Nunez, J Poza, J Gomez-Pilar, A Bachiller, C Gomez, A Lubeiro, V Molina, R Hornero, P Nunez, J Poza, J Gomez-Pilar, A Bachiller, C Gomez, A Lubeiro, V Molina, R Hornero, J Gomez-Pilar, A Bachiller, C Gomez, J Poza, P Nunez, A Lubeiro, V Molina, R Hornero
The aim of this study was to characterize brain dynamics during an auditory oddball task. For this purpose, a measure of the non-stationarity of a given time-frequency representation (TFR) was applied to electroencephalographic (EEG) signals. EEG activity was acquired from 20 schizophrenic (SCH) patients and 20 healthy controls while they underwent a three-stimulus auditory oddball task. The Degree of Stationarity (DS), a measure of the non-stationarity of the TFR, was computed using the continuous wavelet transform...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227300/convolutive-blind-source-separation-on-surface-emg-signals-for-respiratory-diagnostics-and-medical-ventilation-control
#7
Herbert Buchner, Eike Petersen, Marcus Eger, Philipp Rostalski, Herbert Buchner, Eike Petersen, Marcus Eger, Philipp Rostalski, Marcus Eger, Philipp Rostalski, Eike Petersen, Herhert Buchner
The electromyogram (EMG) is an important tool for assessing the activity of a muscle and thus also a valuable measure for the diagnosis and control of respiratory support. In this article we propose convolutive blind source separation (BSS) as an effective tool to pre-process surface electromyogram (sEMG) data of the human respiratory muscles. Specifically, the problem of discriminating between inspiratory, expiratory and cardiac muscle activity is addressed, which currently poses a major obstacle for the clinical use of sEMG for adaptive ventilation control...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227011/how-many-sleep-stages-do-we-need-for-an-efficient-automatic-insomnia-diagnosis
#8
Sana Tmar-Ben Hamida, Martin Glos, Thomas Penzel, Beena Ahmed, Sana Tmar-Ben Hamida, Martin Glos, Thomas Penzel, Beena Ahmed, Sana Tmar-Ben Hamida, Martin Glos, Thomas Penzel, Beena Ahmed
Tools used by clinicians to diagnose and treat insomnia typically include sleep diaries and questionnaires. Overnight polysomnography (PSG) recordings are used when the initial diagnosis is uncertain due to the presence of other sleep disorders or when the treatment, either behavioral or pharmacologic, is unsuccessful. However, the analysis and the scoring of PSG data are time-consuming. To simplify the diagnosis process, in this paper we have proposed an efficient insomnia detection algorithm based on a central single electroencephalographic (EEG) channel (C3) using only deep sleep...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226338/opioids-inhibit-angiogenesis-in-a-chorioallantoic-membrane-model
#9
Haktan Karaman, Adnan Tufek, Evren Karaman, Orhan Tokgoz
BACKGROUND: Angiogenesis is an important characteristic of cancer. Switching from the avascular phase to the vascular phase is a necessary process for tumor growth. Therefore, research in cancer treatment has focused on angiogenesis as a drug target. Despite the widespread use of opioids to treat pain in patients with cancer, little is known about the effect of these drugs on vascular endothelium and angiogenesis. OBJECTIVES: We aimed to investigate the efficacies of morphine, codeine, and tramadol in 3 different concentrations on angiogenesis in hens' eggs...
February 2017: Pain Physician
https://www.readbyqxmd.com/read/28225874/experimental-burns-comparison-between-silver-sulfadiazine-and-photobiomodulation
#10
Mariana Teixeira Gomes, Gabriela Russo Soeiro Campos, Natália Piccolo, Cristiane Miranda França, Guelton Hirano Guedes, Fabio Lopes, Renata A Belotto, Christiane Pavani, Rafael do Nascimento de Lima, Daniela de Fátima Teixeira da Silva
OBJECTIVE: To analyze morphological characteristics and organization of the collagen fibers of third degree burns from scalding compared to laser therapy and silver sulfadiazine, the latter considered as the gold standard. METHOD: Were selected 12 animals (Rattus norvegicus) also divided into three groups (control group [CG] - untreated burns; sulfadiazine group [SG] - burns were treated with silver sulfadiazine at 1%; laser group [LG] - burns were treated with photobiomodulation)...
January 1, 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28221991/detecting-clinically-meaningful-shape-clusters-in-medical-image-data-metrics-analysis-for-hierarchical-clustering-applied-to-healthy-and-pathological-aortic-arches
#11
Jan L Bruse, Maria A Zuluaga, Abbas Khushnood, Kristin McLeod, Hopewell N Ntsinjana, Tain-Yen Hsia, Maxime Sermesant, Xavier Pennec, Andrew M Taylor, Silvia Schievano
OBJECTIVE: Today's growing medical image databases call for novel processing tools to structure the bulk of data and extract clinically relevant information. Unsupervised hierarchical clustering may reveal clusters within anatomical shape data of patient populations as required for modern Precision Medicine strategies. Few studies have applied hierarchical clustering techniques to three-dimensional patient shape data and results depend heavily on the chosen clustering distance metrics and linkage functions...
February 16, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28221965/explanatory-variables-associated-with-campylobacter-and-escherichia-coli-concentrations-on-broiler-chicken-carcasses-during-processing-in-two-slaughterhouses
#12
Ewa Pacholewicz, Arno Swart, Jaap A Wagenaar, Len J A Lipman, Arie H Havelaar
This study aimed at identifying explanatory variables that were associated with Campylobacter and Escherichia coli concentrations throughout processing in two commercial broiler slaughterhouses. Quantative data on Campylobacter and E. coli along the processing line were collected. Moreover, information on batch characteristics, slaughterhouse practices, process performance, and environmental variables was collected through questionnaires, observations, and measurements, resulting in data on 19 potential explanatory variables...
December 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221882/microbial-performance-of-food-safety-control-and-assurance-activities-in-a-fresh-produce-processing-sector-measured-using-a-microbial-assessment-scheme-and-statistical-modeling
#13
Patrick Murigu Kamau Njage, Chemutai Tonui Sawe, Cecilia Moraa Onyango, I Habib, Edmund Njeru Njagi, Marc Aerts, Geert Molenberghs
Current approaches such as inspections, audits, and end product testing cannot detect the distribution and dynamics of microbial contamination. Despite the implementation of current food safety management systems, foodborne outbreaks linked to fresh produce continue to be reported. A microbial assessment scheme and statistical modeling were used to systematically assess the microbial performance of core control and assurance activities in five Kenyan fresh produce processing and export companies. Generalized linear mixed models and correlated random-effects joint models for multivariate clustered data followed by empirical Bayes estimates enabled the analysis of the probability of contamination across critical sampling locations (CSLs) and factories as a random effect...
January 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28219474/correlates-of-the-positive-psychological-byproducts-of-cancer-role-of-family-caregivers-and-informational-support
#14
Kristin Litzelman, Danielle Blanch-Hartigan, Chun Cheih Lin, Xuesong Han
OBJECTIVE: Experiencing a life-threatening illness such as cancer can elicit both negative (e.g., distress) and positive (e.g., growth) psychological responses. The present study sought to determine the correlates of four positive psychological byproducts in cancer survivors: becoming a stronger person, coping better with life's challenges, making positive changes in life, and adopting healthier habits. METHOD: Data for this cross-sectional study were taken from the Medical Expenditures Panel Survey (MEPS) Experiences with Cancer Survivorship Supplement (Yabroff et al...
February 21, 2017: Palliative & Supportive Care
https://www.readbyqxmd.com/read/28219251/childhood-intelligence-and-early-tooth-wear-patterns
#15
Tuomo Heikkinen, Jaana Rusanen, Koshi Sato, Paula Pesonen, Virpi Harila, Lassi Alvesalo
OBJECTIVE: The aim of this study is to explore the relationships between early dental wear patterns and preschool IQ (Intelligence Quotient, by Stanford-Binet) of the child to illuminate the historic relationship of mental queries and bruxism. METHODS: The dental study participants were 864 Euro-American preschool and school children whose IQs were tested for school maturity purposes at the age of 4 years, followed by dental data in a cross-sectional manner at the mean age of 7...
February 20, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28219141/-significance-of-bacteria-detection-with-filter-paper-method-on-diagnosis-of-diabetic-foot-wound-infection
#16
X H Zou, Y P Zhu, G Q Ren, G C Li, J Zhang, L J Zou, Z B Feng, B H Li
Objective: To evaluate the significance of bacteria detection with filter paper method on diagnosis of diabetic foot wound infection. Methods: Eighteen patients with diabetic foot ulcer conforming to the study criteria were hospitalized in Liyuan Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology from July 2014 to July 2015. Diabetic foot ulcer wounds were classified according to the University of Texas diabetic foot classification (hereinafter referred to as Texas grade) system, and general condition of patients with wounds in different Texas grade was compared...
February 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28219140/-effects-of-transient-exposure-to-high-glucose-on-biological-behaviors-of-human-dermal-microvascular-endothelial-cells
#17
L Qiao, H Z Yang, X C Li, X Q Huang, B Yuan, Z D Zhou
Objective: To observe the effects of transient exposure to high glucose on biological behaviors of human dermal microvascular endothelial cells cultured in vitro. Methods: The dividing method and treatment of cells for the detection of all indexes in this study were as follows. Human dermal microvascular endothelial cells of the 4th passage were divided into 3 groups according to the random number table, with 12 wells in each group. Cells in control group (C) were cultured with complete culture solution containing 5 mmol/L D-glucose for 7 d...
February 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28216563/the-genomic-impact-of-dna-cpg-methylation-on-gene-expression-relationships-in-prostate-cancer
#18
REVIEW
Mark D Long, Dominic J Smiraglia, Moray J Campbell
The process of DNA CpG methylation has been extensively investigated for over 50 years and revealed associations between changing methylation status of CpG islands and gene expression. As a result, DNA CpG methylation is implicated in the control of gene expression in developmental and homeostasis processes, as well as being a cancer-driver mechanism. The development of genome-wide technologies and sophisticated statistical analytical approaches has ushered in an era of widespread analyses, for example in the cancer arena, of the relationships between altered DNA CpG methylation, gene expression, and tumor status...
February 14, 2017: Biomolecules
https://www.readbyqxmd.com/read/28214664/the-effect-of-music-listening-on-the-anxiety-of-nursing-students-during-their-first-blood-draw-experience
#19
REVIEW
Serpil Ince, Kıvan Çevik
BACKGROUND: Nursing education is a process aimed both at theoretical knowledge and skill development. The Fundamentals of Nursing is a course that furnishes students with professional knowledge, concepts and technical skills, and, also, is the keystone of nursing education in our country. Students experience a great deal of anxiety as they face basic nursing practices for the first time. Studies have revealed the effectiveness of music in relieving anxiety in many patient groups. However, no previous studies were found where music was used with the intent to lower the anxiety that students experience over the course of skill learning...
February 14, 2017: Nurse Education Today
https://www.readbyqxmd.com/read/28213185/a-comparative-study-of-photogrammetric-methods-using-panoramic-photography-in-a-forensic-context
#20
Kayleigh Sheppard, John P Cassella, Sarah Fieldhouse
Taking measurements of a scene is an integral aspect of the crime scene documentation process, and accepted limits of accuracy for taking measurements at a crime scene vary throughout the world. In the UK, there is no published accepted limit of accuracy, whereas the United States has an accepted limit of accuracy of 0.25 inch. As part of the International organisation for Standardisation 17020 accreditation competency testing is required for all work conducted at the crime scene. As part of this, all measuring devices need to be calibrated within known tolerances in order to meet the required standard, and measurements will be required to have a clearly defined limit of accuracy...
February 4, 2017: Forensic Science International
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