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https://www.readbyqxmd.com/read/28324970/development-of-data-acquisition-components-for-simultaneous-recording-of-3d-epicardial-and-surface-ecg-signals-in-the-langendorff-perfusion-apparatus
#1
Ryan Wade Selby, Anup Jonchhe, Chen Kaplan, Coeli M Lopes, Behnaz Ghoraani
Sudden Cardiac Death (SCD) claims 7 million lives per year. The importance of myocardial electrogram (EGM) repolarization alternans and surface electrocardiogram (ECG) T-wave alternans is gaining traction for understanding the underlying SCD mechanisms. However, the relationship between the 3D spatial distribution of myocardial EGMs and surface ECG with respect to SCD has yet to be investigated. To make this happen, a modified data acquisition system has been developed and fabricated in conjunction with the Langendorff perfusion system to enable simultaneous recording and analysis of the 3D spatial distribution of myocardial EGMs and the surface ECG...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324686/biosorption-of-the-strontium-ion-by-irradiated-saccharomyces-cerevisiae-under-culture-conditions
#2
Liang Qiu, Jundong Feng, Yaodong Dai, Shuquan Chang
As a new-emerging method for strontium disposal, biosorption has shown advantages such as high sorption capacity; low cost. In this study, we investigated the potential of Saccharomyces cerevisiae (S. cerevisiae) in strontium disposal under culture conditions and the effects of irradiation on their biosorption capabilities. We found that S. cerevisiae can survive irradiation and grow. Pre-exposure to irradiation rendered S. cerevisiae resistant to further irradiation. Surprisingly, the pre-exposure to irradiation can increase the biosorption capability of S...
March 17, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28324613/analysis-of-protein-kinetics-using-fluorescence-recovery-after-photobleaching-frap
#3
Nickolaos Nikiforos Giakoumakis, Maria Anna Rapsomaniki, Zoi Lygerou
Fluorescence recovery after photobleaching (FRAP) is a cutting-edge live-cell functional imaging technique that enables the exploration of protein dynamics in individual cells and thus permits the elucidation of protein mobility, function, and interactions at a single-cell level. During a typical FRAP experiment, fluorescent molecules in a defined region of interest within the cell are bleached by a short and powerful laser pulse, while the recovery of the fluorescence in the region is monitored over time by time-lapse microscopy...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28324063/dio2-thr92ala-reduces-deiodinase-2-activity-and-serum-t3-levels-in-thyroid-deficient-patients
#4
M G Castagna, M Dentice, S Cantara, R Ambrosio, F Maino, T Porcelli, C Marzocchi, C Garbi, F Pacini, D Salvatore
Context: A significant proportion of athyreotic LT4-treated patients experience hypothyroid-like symptoms. During LT4 replacement, levels of the active hormone triiodothyronine (T3) strictly depend on type-2-deiodinase (D2)-mediated activation of LT4. The Thr92Ala polymorphism and the 258 G/A in the DIO2 gene have been associated with various clinical conditions. Objectives: To investigate the effects of DIO2 polymorphisms in thyroid hormone homeostasis. Design: We compared the pre-surgical hormonal status of thyroidectomized LT4-treated patients who had a similar TSH level, to their post-surgery status, and analyzed their DIO2 genotype in a subgroup of 102/140 (72...
February 2, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323846/problems-identified-by-dual-sensory-impaired-older-adults-in-long-term-care-when-using-a-self-management-program-a-qualitative-study
#5
Lieve Roets-Merken, Sytse Zuidema, Myrra Vernooij-Dassen, Marianne Dees, Pieter Hermsen, Gertrudis Kempen, Maud Graff
OBJECTIVE: To gain insights into the problems of dual sensory impaired older adults in long-term care. Insights into these problems are essential for developing adequate policies which address the needs of the increasing population of dual sensory impaired older adults in long-term care. METHODS: A qualitative study was conducted in parallel with a cluster randomized controlled trial. Dual sensory impaired older adults in the intervention group (n = 47, age range 82-98) were invited by a familiar nurse to identify the problems they wanted to address...
2017: PloS One
https://www.readbyqxmd.com/read/28323679/the-day-that-went-missing-a-first-person-account-of-transient-global-amnesia
#6
Trip Gabriel
In this vivid first-person case history, political reporter Trip Gabriel describes experiencing a classic episode of transient global amnesia. He was near the average target age of 61. Although no cause has been established for the syndrome, as with many other patients his episode appears to have been triggered by contact with water: He was racing a sailboat. While remaining alert and handling complex sailing maneuvers, he suddenly developed amnesia that left him with no recollection of finishing two races, returning to shore, drinking a beer with his friends, needing help finding his car, and not knowing where he was or where he lived...
March 2017: Cognitive and Behavioral Neurology: Official Journal of the Society for Behavioral and Cognitive Neurology
https://www.readbyqxmd.com/read/28323535/effector-gene-suites-in-some-soil-isolates-of-fusarium-oxysporum-are-not-sufficient-predictors-of-vascular-wilt-in-tomato
#7
Nicolas Jelinski, Karen Broz, Wilfried Jonkers, Li-Jun Ma, Harold Corby Kistler
Seventy-four F. oxysporum soil isolates were assayed for known effector genes present in an F. oxysporum f.sp. lycopersici race 3 tomato wilt strain (FOL MN-25) obtained from the same fields in Manatee County, Florida. Based on the presence or absence of these genes, four haplotypes were defined, two of which represented 96% of the surveyed isolates. These two most common effector haplotypes contained either all or none of the assayed race 3 effector genes. We hypothesized that soil isolates with all surveyed effector genes, similar to FOL MN-25, would be pathogenic toward tomato, whereas isolates lacking all effectors would be non-pathogenic...
March 21, 2017: Phytopathology
https://www.readbyqxmd.com/read/28323441/breaking-binaries-biomedicine-and-serostatus-borderlands-among-couples-with-mixed-hiv-status
#8
Asha Persson, Christy E Newman, Jeanne Ellard
With recent breakthroughs in HIV treatment and prevention, the meanings of HIV-positivity and HIV-negativity are changing at biomedical and community levels. We explore how binary constructions of HIV serostatus identities are giving way to something more complex that brings both welcome possibilities and potential concerns. We draw on research with couples with mixed HIV status to argue that, in the context of lived experiences, serostatus identities have always been more ambiguous than allowed for in HIV discourse...
February 28, 2017: Medical Anthropology
https://www.readbyqxmd.com/read/28319726/factors-affecting-the-programme-completion-of-pre-registration-nursing-students-through-a-three-year-course-a-retrospective-cohort-study
#9
Jane Wray, Jo Aspland, David Barrett, Eric Gardiner
Students who leave pre-registration nurse education having failed to complete remain a concern for higher education institutions. This study identifed factors influencing completion using a retrospective cohort analysis to map student characteristics at entry against Year 3 completion data. The study was set in a nursing faculty in a higher education institution in northern England. Data were collected between 2009 and 2014 with five cohorts of students participating (n = 807). Multinomial logistic regression was used to model the dependent variable Progression Outcome with categories of; completion and non-completion (academic and non-academic reasons)...
March 14, 2017: Nurse Education in Practice
https://www.readbyqxmd.com/read/28319690/depression-and-executive-functioning-deficits-predict-poor-occupational-functioning-in-a-large-longitudinal-sample-with-bipolar-disorder
#10
Lisa A O'Donnell, Patricia J Deldin, Andrew Grogan-Kaylor, Melvin G McInnis, Jenna Weintraub, Kelly A Ryan, Joseph A Himle
BACKGROUND: Bipolar Disorder (BD) is characterized by impairments in psychosocial functioning with occupational disability being one of the most significant. Depression and neurocognitive deficits are features of BD most commonly associated with poor occupational functioning (OF). Few studies have examined these features over an extended period of time focusing on distinct aspects of work functioning. METHODS: This longitudinal study included 273 adults with bipolar I disorder (N=173), bipolar II disorder (N=69), and bipolar not otherwise specified (N=31)...
March 16, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28319664/reduction-of-folate-by-dihydrofolate-reductase-from-thermotoga-maritima
#11
E Joel Loveridge, Lukas Hroch, Robert L Hughes, Thomas Williams, Rhidian L Davies, Antonio Angelastro, Louis Y P Luk, Giovanni Maglia, Rudolf K Allemann
Mammalian dihydrofolate reductases (DHFR) catalyse the reduction of folate more efficiently than the equivalent bacterial enzymes, despite typically having similar efficiencies for the reduction of their natural substrate dihydrofolate. In contrast, we show here that DHFR from the hyperthermophilic bacterium Thermotoga maritima is able to catalyse reduction of folate to tetrahydrofolate with a similar efficiency to reduction of dihydrofolate under saturating conditions. NMR and mass spectrometry experiments showed no evidence for production of free dihydrofolate during either the EcDHFR- or TmDHFR-catalysed reductions of folate, suggesting that both enzymes perform the two reduction steps without release of the partially reduced substrate...
March 20, 2017: Biochemistry
https://www.readbyqxmd.com/read/28319368/comparative-analysis-reveals-furoyl-in-vivo-selective-hydroxyl-acylation-analyzed-by-primer-extension-reagents-form-stable-ribosyl-ester-adducts
#12
Dalen Chan, Chao Feng, Yuran Zhen, Ryan A Flynn, Robert C Spitale
RNA molecules depend on structural elements that are critical for cellular function. Chemical methods for probing RNA structure have emerged as a necessary component of characterizing RNA function. As such, understanding the limitations and idiosyncrasies of these methods is essential for their utility. Selective hydroxyl acylation has emerged as a common method for analyzing RNA structure. Ester products as a result of 2'-hydroxyl acylation can then be identified through reverse transcription or mutational enzyme profiling...
March 21, 2017: Biochemistry
https://www.readbyqxmd.com/read/28319337/impact-of-mild-to-severe-hemophilia-on-education-and-work-by-us-men-women-and-caregivers-of-children-with-hemophilia-b-the-bridging-hemophilia-b-experiences-results-and-opportunities-into-solutions-b-hero-s-study
#13
Susan Cutter, Don Molter, Spencer Dunn, Susan Hunter, Skye Peltier, Kimberly Haugstad, Neil Frick, Natalia Holot, David L Cooper
The psychosocial impact of hemophilia on work was recently investigated in the Hemophilia Experiences, Results and Opportunities (HERO) study. The findings revealed that hemophilia had an impact for adults with moderate/severe hemophilia and caregivers of children with hemophilia. HERO did not specifically evaluate impact on education in adults/children with mild/moderate hemophilia or the impact on employment of spouses/partners of caregivers of affected children. The Bridging Hemophilia B Experiences, Results and Opportunities into Solutions (B-HERO-S) study evaluated the impact of hemophilia on the lives of adult men/women with mild-severe hemophilia B and caregivers of boys/girls with hemophilia B and their spouses/partners...
April 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/28319335/evaluating-the-psychosocial-impact-of-hemophilia-b-the-bridging-hemophilia-b-experiences-results-and-opportunities-into-solutions-b-hero-s-study
#14
Robert Sidonio, Natalia Holot, David L Cooper
The needs of individuals living with hemophilia B, especially those with mild or moderate hemophilia and affected females, are not well understood. The Bridging Hemophilia B Experiences, Results and Opportunities into Solutions (B-HERO-S) initiative was developed in an effort to obtain greater insights into the unique issues and challenges faced by those with hemophilia B. This study explored the impact of hemophilia B on education, employment, engagement in physical activities and other psychosocial aspects of the lives of affected individuals and their families...
April 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/28319288/impact-of-single-centre-kidney-paired-donation-transplantation-to-increase-the-donor-pool-in-india
#15
Vivek B Kute, Himanshu V Patel, Pankaj R Shah, Pranjal R Modi, Veena R Shah, Sayyed J Rizvi, Bipin C Pal, Priyadarshini S Shah, Manisha P Modi, Beena P Butala, Pavan S Wakhare, Umesh T Varyani, Saiprasad G Shinde, Vijay A Ghodela, Govind S Kasat, Mayur V Patil, Jaideep C Patel, Deepk P Kumar, Varsha B Trivedi, Minaxi H Patel, Hargovind L Trivedi
In a living donor kidney transplantation (LDKT) dominated transplant programme, kidney paired donation (KPD) may be a cost-effective and valid alternative strategy to increase LDKT in countries with limited resources where deceased donation kidney transplantation (DDKT) is in the initial stages. Here, we report our experience of 300 single-centre KPD transplantations to increase LDKT in India. Between January 2000 and July 2016, 3616 LDKT and 561 DDKT were performed at our transplantation centre, 300 (8.3%) using KPD...
March 20, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28318843/development-of-a-conceptual-etiological-model-of-treatment-regimen-fatigue-among-patients-engaged-in-hiv-care-a-qualitative-study
#16
Kasey Claborn, Mary Beth Miller, Ellen Meier, Sofia Carbone
Treatment regimen fatigue (TRF) is a decreased desire and motivation to maintain vigilance in adhering to treatment, and little is known about TRF in people living with HIV. We aimed to develop a conceptual framework of TRF. Five focus groups were conducted in 2014. Eligible participants were (a) HIV infected, (b) at least 18 years of age, (c) prescribed antiretroviral therapy, and (d) fluent in English. Data were analyzed using thematic analysis. Analyses revealed these themes: patient experiences of TRF; etiological factors at the systems, provider, and patient levels; strategies to manage TRF; consequences of TRF; and protective factors that prevent the occurrence of TRF...
March 3, 2017: Journal of the Association of Nurses in AIDS Care: JANAC
https://www.readbyqxmd.com/read/28318393/pathways-to-adolescent-childbearing-among-kaqchikel-women-in-guatemala
#17
Emily Lemon, Monique Hennink, Nely Amparo Can Saquic
One-in-five children in Guatemala is born to a mother aged 15-19 years, which poses social, economic and health risks to both mother and child. In Guatemala, adolescent childbearing is directly associated with education, ethnicity and poverty, which increases vulnerability among Indigenous young women living in poverty. This study examines the context and experiences of adolescent childbearing from the perspectives of young mothers in the Kaqchikel Indigenous ethnic group of Sololá, Guatemala. Data were collected in 19 qualitative in-depth interviews with women who had given birth to one or more children when aged 15 to 19 years...
March 20, 2017: Culture, Health & Sexuality
https://www.readbyqxmd.com/read/28318387/a-qualitative-study-of-the-challenges-of-providing-pre-prosthetic-rehabilitation-in-rural-south-africa
#18
Liezel Ennion, Anton Johannesson Johannesson
BACKGROUND: There is a known shortage of rehabilitation staff in rural settings and a sharp increase in the number of lower limb amputations being performed. A lack of adequate pre-prosthetic rehabilitation will result in worse physical and psychological outcomes for a person with a lower limb amputation, and they will not be eligible to be fitted with a prosthesis. OBJECTIVE: To explore therapists' experiences with providing pre-prosthetic rehabilitation in a rural setting...
March 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28318200/-disclosure-of-human-immunodeficiency-virus-diagnosis-in-children-and-adolescents-affected-by-it-and-their-caregivers
#19
Adriana Malanca, Irene Foradori, Erica Stankievich, Hugo Pandullo, Marcelo Losso
Children and adolescents need to know about their health or that of their parents. However, families affected by human immunodeficiency virus often delay disclosure of diagnosis for fear of stigma or discrimination or simply because they wonder when and how to communicate it. We present the experience of implementing a program to "reveal" the human immunodeficiency virus diagnosis to children, adolescents and caregivers. The aim was to describe and understand the impact of disclosure and to collaborate on actions to improve comprehensive care for families living with human immunodeficiency virus...
April 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28317887/nmr-spectroscopy-of-single-sub-nl-ova-with-inductive-ultra-compact-single-chip-probes
#20
Marco Grisi, Franck Vincent, Beatrice Volpe, Roberto Guidetti, Nicola Harris, Armin Beck, Giovanni Boero
Nuclear magnetic resonance (NMR) spectroscopy enables non-invasive chemical studies of intact living matter. However, the use of NMR at the volume scale typical of microorganisms is hindered by sensitivity limitations, and experiments on single intact organisms have so far been limited to entities having volumes larger than 5 nL. Here we show NMR spectroscopy experiments conducted on single intact ova of 0.1 and 0.5 nL (i.e. 10 to 50 times smaller than previously achieved), thereby reaching the relevant volume scale where life development begins for a broad variety of organisms, humans included...
March 20, 2017: Scientific Reports
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