Σάββατο 10 Φεβρουαρίου 2018

Adrenergic control mechanisms of heart rate - down to a T?

Abstract

Each heart beat originates from complex molecular processes which result in the generation of a spontaneous action potential that triggers an electrical cascade to the rest of the heart, converted into co-ordinated mechanical action to allow effective function as a pump.

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Having Older Siblings Is Associated with Lower Rates of Depression, ADD/ADHD, Anxiety and Behavior Problems Among Children with ASD

Abstract

Objective Within the social determinants of mental health framework, this article investigated whether children with ASD who have older siblings are less likely to experience depression, anxiety, behavior problems or have ADD/ADHD after controlling for standard social determinants of mental health such as household income, parental education and adverse childhood experiences (ACEs). Methods Using the National Survey of Children's Health 2011–2012, children with ASD spectrum disorders (n = 1624) were categorized into three groups: only child, oldest child and has older siblings. Design corrected cross-tabulations, univariate and multivariate logistic regressions were estimated. Results The three groups of children with ASD were comparable in demographic characteristics (except age), ACEs, and parent-reported ASD severity. Children with ASD who had older siblings were significantly less likely to experience depression, anxiety or behavior problems. They were also less likely to have been diagnosed with ADD or ADHD. Adjusted odds ratios ranged from 0.12 to 0.53 indicating robust associations. Conclusions for Practice Children with ASD who have older siblings were less likely to have comorbid mental health disorders than other children with ASD. Conversely, oldest and only children with ASD were at increased risk for these disorders. Further research is needed to understand how this protection is conferred on children with ASD, and whether it can be adapted into interventions for only and oldest children with ASD.



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Shank3 mutations and HCN channelopathy: one size does not fit all

Abstract

Autism, from the Greek autos ("self") and ismos ("action") was initially described as a congenital lack of interest in other people.

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Non-syndromic bilateral ulnar aplasia with humero-radial synostosis and oligo-ectro-dactyly

Congenital anomalies of the upper limbs are rare and etiologically heterogeneous. Herein, we report a male infant with non-syndromic bilateral Type Vb ulnar longitudinal dysplasia with radiohumeral synostosis (apparent humeral bifurcation), and bilateral oligo-ectro-syndactyly who was born following an uncomplicated pregnancy, with no maternal use of prescription or illicit medication. Array CGH (60,000 probes) and chromosomal breakage analysis (DEB) were normal. Similar appearances have been reported in children exposed to thalidomide or cocaine, but sporadic patients have also been reported without a prior history of exposure to known teratogens.



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Παρασκευή 9 Φεβρουαρίου 2018

Sustainability of a Community-Based CHOICE Program to Improve the Health and Nutrition Status of Mothers and Infants in Indonesia

Abstract

Objectives Few studies have been undertaken to determine whether and how project results are sustained. University of Notre Dame (ND) and Project Concern International conducted a Post-Project Sustainability Study (PSS) of a USAID-funded program (CHOICE), implemented in Indonesia, Banten province, between 2003 and 2007, in order to determine lasting effects and improve PSS methodologies. Methods Sustainability was measured through a comparison of data collected on mother–infant pairs in 2014 with final evaluation data from 2007; and through a comparison of 2014 data collected from the CHOICE villages and comparison villages. Results The analysis showed positive differences in multiple indicators in CHOICE villages between 2007 and 2014, including births attended by skilled personnel (Mean Difference 48.56, 95% CI 38.68 to 58.43) and treatment of diarrhea (MD 16.42, 95% CI − 0.94 to 33.37). However, only one statistically significant difference between intervention and comparison groups in 2014 was observed, infants with diarrhea whose mothers sought advice or treatment (MD − 5.48, 95% CI − 9.55 to 1.39), showing more mothers in intervention group sought advice or treatment. Because contextual factors were not studied in detail and baseline data was not available for the comparison villages, it is difficult to determine the reasons for the results. Given that longitudinal data was not collected, it is also difficult to determine whether results fluctuated between 2007 and 2014. Conclusions for practice This PSS contributes to the limited body of knowledge in sustainability research. Lessons learned from this study will increase potential for sustainable impact of projects, as more rigorous measurement will lead to greater overall understanding of how sustainability actually "happens".



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Enhancing Understanding of Postpartum Pain Among Migrant and Non-migrant Women Through a Qualitative Lens



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Assessing ocular activity during performance of motor skills using electrooculography

Abstract

Eye-tracking research has revealed that, compared to novices, experts make longer ocular fixations on the target of an action when performing motor skills; that is, they have a longer quiet eye. Remarkably, the reason why a longer quiet eye aids movement has yet to be established. There is a need for interdisciplinary research and new measures to accelerate progress on the mechanistic understanding of the phenomenon. With the aim to provide researchers with new tools, we assessed the utility of electrooculography (EOG) to examine ocular activity while 10 experts and 10 novices putted golf balls. We measured quiet eye durations, distinguishing its pre- and postmovement initiation components, and developed a novel time-varying index of ocular activity, eye quietness, computed as the variability of the EOG in short time intervals: lower values correspond with greater quietness. Finally, we measured movement durations using a combination of infrared and sound sensors. Experts had longer postmovement initiation quiet eye compared to novices; however, total and premovement quiet eye durations did not differ between groups. Eye quietness was inversely correlated with quiet eye duration, and was greatest immediately after movement initiation. Importantly, movement duration correlated positively with postmovement initiation quiet eye and negatively with eye quietness shortly after movement initiation. This study demonstrates the utility of assessing ocular activity during performance of motor skills using EOG. Additionally, these findings provide evidence that expert–novice differences in ocular activity may reflect differences in the kinematics (e.g., movement duration) of how experts and novices execute motor skills.



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