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https://www.readbyqxmd.com/read/28324991/features-of-cerebral-oxygenation-detects-brain-injury-in-premature-infants
#1
John M O'Toole, Mmoloki Kenosi, Daragh Finn, Geraldine B Boylan, Eugene M Dempsey
Babies born prematurely can develop brain injury within days after birth. Early identification of high-risk infants enables appropriate clinical care to mitigate potential lifelong disabilities. Near infra-red spectroscopy is an established technology that can provide continuous measurements of cerebral oxygen saturation (rcSO2) over this critical period. We develop a feature set of the rcSO2 signal for the purpose of detecting brain injury. Our feature set contains amplitude, spectral, and fractal dimension features within 5 frequency bands...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324921/epidemiology-of-intracranial-metastases-in-korea-a-national-cohort-investigation
#2
Tackeun Kim, Changhoon Song, Jung Ho Han, In-Ah Kim, Yu Jung Kim, Se Hyun Kim, Jee Hyun Kim, Chae-Yong Kim
Purpose: To investigate the epidemiologic features of intracranial metastases (ICMET) in Korea, we performed a cohort study using the National Health Insurance Service-National Sample Cohort database, which comprised healthcare usage information of approximately 1 million Korean individuals over 12 years. Materials and Methods: We enrolled 998,602 subjects, after excluding 18,218 subjects diagnosed with any cancer during the washout period (2002-2004). The observation period was 9 years (2005-2013; 8,725,438 person-years)...
March 21, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28324851/assessing-the-impacts-of-best-management-practices-on-nitrate-pollution-in-an-agricultural-dominated-lowland-catchment-considering-environmental-protection-versus-economic-development
#3
Marcelo B Haas, Björn Guse, Nicola Fohrer
Water quality is strongly affected by nitrate inputs in agricultural catchments. Best Management Practices (BMPs) are alternative practices aiming to mitigate the impacts derived from agricultural activities and to improve water quality. Management activities are influenced by different governmental policies like the Water Framework Directive (WFD) and the Renewable Energy Sources Act (EEG). Their distinct goals can be contrasting and hamper an integrated sustainable development. Both need to be addressed in the actual conjuncture in rural areas...
March 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28324115/regenerative-responses-and-axon-pathfinding-of-retinal-ganglion-cells-in-chronically-injured-mice
#4
Benjamin J Yungher, Márcio Ribeiro, Kevin K Park
Purpose: Enhanced regeneration of retinal ganglion cell (RGC) axons can be achieved by modification of numerous neuronal-intrinsic factors. However, axon growth initiation and the pathfinding behavior of these axons after traumatic injury remain poorly understood outside of acute injury paradigms, despite the clinical relevance of more chronic settings. We therefore examined RGC axon regeneration following therapeutic delivery that is postponed until 2 months after optic nerve crush injury...
March 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28324024/thyroid-hormone-receptor-%C3%AE-controls-developmental-timing-and-regulates-the-rate-and-coordination-of-tissue-specific-metamorphosis-in-xenopus-tropicalis
#5
Luan Wen, Yuki Shibata, Dan Su, Liezhen Fu, Nga Luu, Yun-Bo Shi
Thyroid hormone (T3) receptor (TR) mediates the effects of T3 on organ metabolism and animal development. There are two TR genes, TRα and TRβ, in all vertebrates. During animal development, TRα expression is activated earlier than zygotic T3 synthesis and secretion into the plasma, implicating a developmental role of TRα both in the presence and absence of T3. Using T3-dependend amphibian metamorphosis as a model, we have previously proposed a dual functional model for TRs, in particular TRα, during development...
March 14, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323834/selection-and-validation-of-reference-genes-for-qrt-pcr-analysis-during-biological-invasions-the-thermal-adaptability-of-bemisia-tabaci-med
#6
Tian-Mei Dai, Zhi-Chuang Lü, Wan-Xue Liu, Fang-Hao Wan
The Bemisia tabaci Mediterranean (MED) cryptic species has been rapidly invading to most parts of the world owing to its strong ecological adaptability, which is considered as a model insect for stress tolerance studies under rapidly changing environments. Selection of a suitable reference gene for quantitative stress-responsive gene expression analysis based on qRT-PCR is critical for elaborating the molecular mechanisms of thermotolerance. To obtain accurate and reliable normalization data in MED, eight candidate reference genes (β-act, GAPDH, β-tub, EF1-α, GST, 18S, RPL13A and α-tub) were examined under various thermal stresses for varied time periods by using geNorm, NormFinder and BestKeeper algorithms, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28323615/stella-modulates-transcriptional-and-endogenous-retrovirus-programs-during-maternal-to-zygotic-transition
#7
Yun Huang, Jong Kyoung Kim, Dang Vinh Do, Caroline Lee, Christopher A Penfold, Jan J Zylicz, John C Marioni, Jamie A Hackett, M Azim Surani
The maternal-to-zygotic transition (MZT) marks the period when the embryonic genome is activated and acquires control of development. Maternally inherited factors play a key role in this critical developmental process, which occurs at the 2-cell stage in mice. We investigated the function of the maternally inherited factor STELLA (DPPA3) using single-cell/embryo approaches. We show that loss of maternal STELLA results in widespread transcriptional mis-regulation and a partial failure of MZT. Strikingly, activation of endogenous retroviruses (ERVs) is significantly impaired in Stella maternal/zygotic knockout embryos, which in turn leads to a failure to upregulate chimeric transcripts...
March 21, 2017: ELife
https://www.readbyqxmd.com/read/28320079/ketamine-reduces-the-need-for-intubation-in-patients-with-acute-severe-mental-illness-and-agitation-requiring-transport-to-definitive-care-an-observational-study
#8
Cathrin S Parsch, Adrianne Boonstra, David Teubner, Wade Emmerton, Brian McKenny, Daniel Y Ellis
OBJECTIVES: The aim of this study was to review mental health patients transported by a dedicated statewide critical care retrieval team before and after the implementation of a ketamine sedation guideline. METHODS: This is a a retrospective cohort study of mental health patients with acute behavioural disturbance, transported between January 2010 and December 2015. RESULTS: A total of 78 patients were transported in the study period, 50 before and 28 after implementation of the ketamine guideline in June 2013...
March 20, 2017: Emergency Medicine Australasia: EMA
https://www.readbyqxmd.com/read/28319802/associations-between-home-insulin-dose-adjustments-and-glycemic-outcomes-at-hospital-admission
#9
Saira Khan, Sherita Hill Golden, Nestoras Mathioudakis
AIMS: To describe patterns of home insulin dose adjustments for non-surgical, non-critically ill patients at admission and to describe associations between these adjustments and inpatient glycemic control. METHODS: Hospital records of non-critically ill patients treated with basal insulin prior to admission were identified. After exclusion of records in which a confounding factor influencing insulin dosing was present, 258 patient-admissions over a 3-year time period were included...
March 7, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28319691/trajectories-of-maternal-depressive-symptoms-in-the-early-childhood-period-and-family-wide-clustering-of-risk
#10
Sheri Madigan, Mark Wade, André Plamondon, Jennifer M Jenkins
BACKGROUND: Previous research on individual differences in the course of maternal depressive symptoms has yielded inconsistent findings, with significant variation in the number and pattern of trajectories identified. In addition, missing from the literature is a comprehensive examination of predictors and longitudinal consequences of particular depression trajectories. METHOD: Participants in this study included a community cohort of 501 women assessed for depression using the Center for Epidemiologic Depression Scale at infant age 2, 18, 36, and 54 months...
March 7, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28319178/inter-nesting-movements-and-habitat-use-of-adult-female-kemp-s-ridley-turtles-in-the-gulf-of-mexico
#11
Donna J Shaver, Kristen M Hart, Ikuko Fujisaki, David Bucklin, Autumn R Iverson, Cynthia Rubio, Thomas F Backof, Patrick M Burchfield, Raul de Jesus Gonzales Diaz Miron, Peter H Dutton, Amy Frey, Jaime Peña, Daniel Gomez Gamez, Hector J Martinez, Jaime Ortiz
Species vulnerability is increased when individuals congregate in restricted areas for breeding; yet, breeding habitats are not well defined for many marine species. Identification and quantification of these breeding habitats are essential to effective conservation. Satellite telemetry and switching state-space modeling (SSM) were used to define inter-nesting habitat of endangered Kemp's ridley turtles (Lepidochelys kempii) in the Gulf of Mexico. Turtles were outfitted with satellite transmitters after nesting at Padre Island National Seashore, Texas, USA, from 1998 through 2013 (n = 60); Rancho Nuevo, Tamaulipas, Mexico, during 2010 and 2011 (n = 11); and Tecolutla, Veracruz, Mexico, during 2012 and 2013 (n = 11)...
2017: PloS One
https://www.readbyqxmd.com/read/28319051/tissue-specific-exosome-biomarkers-for-noninvasively-monitoring-immunologic-rejection-of-transplanted-tissue
#12
Prashanth Vallabhajosyula, Laxminarayana Korutla, Andreas Habertheuer, Ming Yu, Susan Rostami, Chao-Xing Yuan, Sanjana Reddy, Chengyang Liu, Varun Korutla, Brigitte Koeberlein, Jennifer Trofe-Clark, Michael R Rickels, Ali Naji
In transplantation, there is a critical need for noninvasive biomarker platforms for monitoring immunologic rejection. We hypothesized that transplanted tissues release donor-specific exosomes into recipient circulation and that the quantitation and profiling of donor intra-exosomal cargoes may constitute a biomarker platform for monitoring rejection. Here, we have tested this hypothesis in a human-into-mouse xenogeneic islet transplant model and validated the concept in clinical settings of islet and renal transplantation...
March 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28319016/anti-m%C3%A3-llerian-hormone-kinetics-in-pregnancy-and-post-partum-a-systematic-review
#13
REVIEW
Sarah McCredie, William Ledger, Christos A Venetis
The aim of this systematic review is to critically appraise the available evidence regarding the kinetics of anti-Müllerian hormone (AMH) during pregnancy and post-partum. A systematic literature search was conducted in MEDLINE, Embase, CENTRAL, Scopus and Web of Science on 14 December 2015, aiming to identify studies providing data on the serum concentration of AMH in women at various stages of gestation and post-partum. There was a total of 1719 participants across eight studies. Seven out of the eight studies reported a decline in serum AMH concentration with advancing gestational age...
February 24, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28318969/auditory-perceptual-evaluation-of-voice-quality-of-cochlear-implanted-and-normal-hearing-individuals-a-reliability-study
#14
Ana Cristina Coelho, Alcione Ghedini Brasolotto, Ana Carolina Nascimento Fernandes, Daniela Malta de Souza Medved, Eduardo Magalhães da Silva, Fayez Bahmad Júnior
OBJECTIVE: This study aimed to present an experience in rating voices of adults with normal hearing and adults with cochlear implants and critically examine the outcomes, discussing pros and cons of the methodology used. STUDY DESIGN: This is a cross-sectional, prospective study. METHODS: One hundred and fifty voice samples, consisting of 50 sustained vowels, 50 samples of connected speech, and 50 samples of conversational speech, belonging to 25 adults with hearing impairment with cochlear implants and 25 adults with normal hearing, were perceptually analyzed for inter-rater agreement and intra-rater reliability...
March 16, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28318967/pitch-strength-as-an-outcome-measure-for-treatment-of-dysphonia
#15
Lisa M Kopf, Cristina Jackson-Menaldi, Adam D Rubin, Jean Skeffington, Eric J Hunter, Mark D Skowronski, Rahul Shrivastav
BACKGROUND: Measurement of treatment outcomes is critical for the spectrum of voice treatments (ie, surgical, behavioral, or pharmacological). Outcome measures typically include visual (eg, stroboscopic data), auditory (eg, Consensus Auditory-Perceptual Evaluation of Voice; Grade, Roughness, Breathiness, Asthenia, Strain), and objective correlates of vocal fold vibratory characteristics, such as acoustic signals (eg, harmonics-to-noise ratio, cepstral peak prominence) or patient self-reported questionnaires (eg, Voice Handicap Index, Voice-Related Quality of Life)...
March 16, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28318696/coupling-lidar-and-thermal-imagery-to-model-the-effects-of-riparian-vegetation-shade-and-groundwater-inputs-on-summer-river-temperature
#16
Vincent Wawrzyniak, Pascal Allemand, Sarah Bailly, Jérôme Lejot, Hervé Piégay
In the context of global warming, it is important to understand the drivers controlling river temperature in order to mitigate temperature increases. A modeling approach can be useful for quantifying the respective importance of the different drivers, notably groundwater inputs and riparian shading which are potentially critical for reducing summer temperature. In this study, we use a one-dimensional deterministic model to predict summer water temperature at an hourly time step over a 21km reach of the lower Ain River (France)...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28318028/study-of-the-cold-charge-transfer-state-separation-at-the-tq1-pc71-bm-interface
#17
Riccardo Volpi, Mathieu Linares
Charge transfer (CT) state separation is one of the most critical processes in the functioning of an organic solar cell. In this article, we study a bilayer of TQ1 and PC71 BM molecules presenting disorder at the interface, obtained by means of Molecular Dynamics. The study of the CT state splitting can be first analyzed through the CT state splitting diagram, introduced in a previous work. Through this analysis, we identify the possibility of CT state splitting within Marcus Theory in function of the electric field...
March 20, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28318014/-solvent-hydrogen-bond-occlusion-a-new-model-of-polar-desolvation-for-biomolecular-energetics
#18
Andrea Bazzoli, John Karanicolas
Water engages in two important types of interactions near biomolecules: it forms ordered "cages" around exposed hydrophobic regions, and it participates in hydrogen bonds with surface polar groups. Both types of interaction are critical to biomolecular structure and function, but explicitly including an appropriate number of solvent molecules makes many applications computationally intractable. A number of implicit solvent models have been developed to address this problem, many of which treat these two solvation effects separately...
March 20, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28317325/experimental-verification-of-advanced-collapsed-cone-engine-for-use-with-a-multichannel-vaginal-cylinder-applicator
#19
Brie Cawston-Grant, Hali Morrison, Geetha Menon, Ron S Sloboda
Model-based dose calculation algorithms have recently been incorporated into brachytherapy treatment planning systems, and their introduction requires critical evaluation before clinical implementation. Here, we present an experimental evaluation of Oncentra(®) Brachy Advanced Collapsed-cone Engine (ACE) for a multichannel vaginal cylinder (MCVC) applicator using radiochromic film. A uniform dose of 500 cGy was specified to the surface of the MCVC using the TG-43 dose formalism under two conditions: (a) with only the central channel loaded or (b) only the peripheral channels loaded...
March 20, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28317276/important-considerations-in-lesion-symptom-mapping-illustrations-from-studies-of-word-comprehension
#20
Hinna Shahid, Rajani Sebastian, Tatiana T Schnur, Taylor Hanayik, Amy Wright, Donna C Tippett, Julius Fridriksson, Chris Rorden, Argye E Hillis
Lesion-symptom mapping is an important method of identifying networks of brain regions critical for functions. However, results might be influenced substantially by the imaging modality and timing of assessment. We tested the hypothesis that brain regions found to be associated with acute language deficits depend on (1) timing of behavioral measurement, (2) imaging sequences utilized to define the "lesion" (structural abnormality only or structural plus perfusion abnormality), and (3) power of the study. We studied 191 individuals with acute left hemisphere stroke with MRI and language testing to identify areas critical for spoken word comprehension...
March 20, 2017: Human Brain Mapping
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