267 research outputs found
Association of Paternal Age and Risk for Major Congenital Anomalies From the National Birth Defects Prevention Study, 1997 to 2004
The objective of this study was to examine the associations between paternal age and birth defects of unknown etiologies while carefully controlling for maternal age
Thinking or feeling? An exploratory study of maternal scaffolding, child mental state talk and emotion understanding in language-impaired and typically-developing school-aged children
Background
Motherâchild mental state talk (MST) supports children's developing socialâemotional understanding. In typically developing (TD) children, family conversations about emotion, cognition, and causes have been linked to children's emotion understanding. Specific language impairment (SLI) may compromise developing emotion understanding and adjustment.
Aims
We investigated emotion understanding in children with SLI and TD, in relation to motherâchild conversation. Specifically, is cognitive, emotion, or causal MST more important for child emotion understanding and how might maternal scaffolding support this?
Sample
Nine 5â to 9âyearâold children with SLI and nine ageâmatched typically developing (TD) children, and their mothers.
Method
We assessed children's language, emotion understanding and reported behavioural adjustment. Motherâchild conversations were coded for MST, including emotion, cognition, and causal talk, and for scaffolding of causal talk.
Results
Children with SLI scored lower than TD children on emotion understanding and adjustment. Mothers in each group provided similar amounts of cognitive, emotion, and causal talk, but SLI children used proportionally less cognitive and causal talk than TD children did, and more such child talk predicted better child emotion understanding. Child emotion talk did not differ between groups and did not predict emotion understanding. Both groups participated in maternalâscaffolded causal talk, but causal talk about emotion was more frequent in TD children, and such talk predicted higher emotion understanding.
Conclusions
Cognitive and causal language scaffolded by mothers provides tools for articulating increasingly complex ideas about emotion, predicting children's emotion understanding. Our study provides a robust method for studying scaffolding processes for understanding causes of emotion
Picturing the nation : The Celtic periphery as discursive other in the archaeological displays of the museum of Scotland
Using the archaeological displays at the Museum of Scotland in Edinburgh, this paper examines the exhibition as a site of identity creation through the negotiations between categories of same and Other. Through an analysis of the poetics of display, the paper argues that the exhibition constructs a particular relationship between the Celtic Fringe and Scottish National identity that draws upon the historical discourses of the Highlands and Islands of Scotland as a place and a time \u27apart\u27. This will be shown to have implications for the display of archaeological material in museums but also for contemporary understandings of Scottish National identity. <br /
Stability of Self-Assembled Polymeric Micelles in Serum
The stability of polymeric nanoparticles in serum is critical to their use in drug delivery where dilution after intravenous injection often results in nanoparticle disassembly and drug unloading; however, few investigate this in biologically relevant media. To gain greater insight into nanoparticle stability in blood, the stability of self-assembled polymeric micelles of poly(d,l-lactide-co-2-methyl-2-carboxytrimethylene carbonate)-g-poly(ethylene glycol), P(LA-co-TMCC)-g-PEG, were tested in both serum and individual serum protein solutions. By encapsulating Förster resonance energy transfer pairs and following their release by fluorescence, these micelles demonstrated excellent thermodynamic and kinetic stability in the presence of serum. Further analyses by fast protein liquid chromatography and dynamic light scattering confirmed these data. Moreover, these micelles are compatible with red blood cells, as shown by a hemolysis assay. The stability and compatibility demonstrated in blood suggest that these micelles may be stable in vivo, which is critical for intravenous drug delivery applications. This comprehensive approach to understanding micelle stability and compatibility is broadly applicable
Public perceptions of energy security in Greece and Turkey: Exploring the relevance of pro-environmental and pro-cultural orientations
Recent definitions of energy security have evolved to include qualitative dimensions, such as social acceptability, alongside more classic issues such as the availability and affordability of energy supplies. Despite the importance of lay-public opinion in shaping energy and environmental policy, however, currently relatively little is known about the underlying nature of peopleâs attitudes towards energy security. The current study used an online survey to gather perceptions of energy security in samples from two neighbouring countries with a historical reliance on energy imports (i.e. Greece & Turkey). There was a specific focus on understanding the relationships between individualsâ pro-environmental and pro-cultural orientations and their energy security concerns. The results not only confirm the multifaceted nature of energy security attitudes but also indicate that the extent and nature of this concern (both in general and in terms of a number of sub-facets of concern) differs between populations. While pro-cultural orientations were not predictive of concern in either subsample, pro-environmental orientations were (e.g. for concerns about fossil fuel depletion within the Greek subsample). This research contributes to the literature pertaining to the nature and antecedents of lay-public opinions of energy security and provides a footing for further systematic investigation into this area
Unseen influence-The role of low carbon retrofit advisers and installers in the adoption and use of domestic energy technology
Reducing climate changing emissions associated with residential property continues to be a significant challenge. Five case studies of different domestic energy technology schemes in England highlight the influence of advisers and installers in householders' decisions to adopt low carbon technologies. Many of these advisers and installers are micro-enterprises working in connected groups in particular geographic areas. Such micro-enterprises form a large part of the construction sector, but despite the number of enterprises and the potential impact of changes in the behaviour of the sole traders and small firms, there appears to be little policy that specifically targets this group.Data from these case studies is presented and organised into a typological framework, in order to illustrate the range of ways in which the impact of advisers and installers can be modified. Two of the six factors in the typological framework relate to the motivation of installers themselves and how their work is perceived by their clients. By examining these factors in particular, this paper makes a novel contribution to understanding the factors that influence the take up and use of domestic energy technologies, leading to the possibility of new policy options or interventions
Effects of antiplatelet therapy on stroke risk by brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases: subgroup analyses of the RESTART randomised, open-label trial
Background
Findings from the RESTART trial suggest that starting antiplatelet therapy might reduce the risk of recurrent symptomatic intracerebral haemorrhage compared with avoiding antiplatelet therapy. Brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases (such as cerebral microbleeds) are associated with greater risks of recurrent intracerebral haemorrhage. We did subgroup analyses of the RESTART trial to explore whether these brain imaging features modify the effects of antiplatelet therapy
Predicted contribution of folic acid fortification of corn masa flour to the usual folic acid intake for the US population: National Health and Nutrition Examination Survey 2001â2004
Background: Folic acid can prevent up to 70% of neural tube defects (NTDs) if taken before pregnancy. Compared with other race-ethnicities, Hispanic women have higher rates of NTDs, lower rates of folic acid supplement use, and lower total folic acid intakes. Objective: The objective was to assess potential effects of fortifying corn masa flour with folic acid on Mexican American women and other segments of the US population. Design: A model was developed by using data from the National Health and Nutrition Examination Survey 2001-2004 to estimate the folic acid content in foods containing corn masa flour if fortified at a level of 140 ug folic acid/100 g corn masa flour. Results: Had corn masa flour fortification occurred, we estimated that Mexican American women aged 15-44 y could have increased their total usual daily folic acid intake by 19.9% and non-Hispanic white women by 4.2%. Among the US population, estimated relative percentage increases in total usual daily folic acid intake with corn masa flour fortification were greatest among Mexican Americans (16.8%) and lowest among children aged 1-3 y (2%) and adults aged \u3e51 y (0-0.5%). Conclusion: Analyses suggest that corn masa flour fortification would have effectively targeted Mexican Americans, specifically, Mexican American women, without substantially increasing folic acid intake among other segments of the population. Such increases could reduce the disparity in total folic acid intake between Mexican American and non-Hispanic white women of childbearing age and implies that an additional NTD preventive benefit would be observed for Mexican American women
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Peas, please! Food familiarization though picture books helps parents introduce vegetables into preschoolers' diets
Repeated taste exposure is an established means of increasing childrenâs liking and intake of fruit and vegetables. However, parents find it difficult to offer children disliked foods repeatedly, often giving up after a few attempts. Studies show that familiarizing children to fruit and vegetables through picture books can increase their interest in tasting targeted foods. This study explored whether looking at picture books before providing foods to taste improved the outcomes of a home-delivered taste exposure regime. Parents of 127 toddlers (aged 21-24 months) identified two âtargetâ foods they wanted their child to eat (1 fruit, 1 vegetable). Families were randomly assigned to one of three groups. Parents and children in two experimental groups looked at books about either the target fruit or vegetable every day for two weeks; the control group did not receive a book. Parents in all three groups were then asked to offer their child both target foods every day during a 2-week taste-exposure phase. Parental ratings of childrenâs liking and consumption of the foods were collected at baseline, immediately following taste-exposure (post-intervention), and 3 months later (follow-up). In all groups, liking of both foods increased following taste exposure and remained above baseline at follow-up (all ps<.001). In addition, compared to the control group who experienced only taste exposure, looking at vegetable books enhanced childrenâs liking of their target vegetable post-intervention (p<.001) and at follow-up (p<.05), and increased consumption of the vegetable at follow-up (p<.01). Exposure to vegetable books was also associated with smaller increases in neophobia and food fussiness over the period of the study compared to controls (ps<.01), suggesting that picture books may have positive, long-term impacts on childrenâs attitudes towards new foods
Substitution of Met-38 to Ile in Îł-synuclein found in two patients with amyotrophic lateral sclerosis induces aggregation into amyloid
α-, ÎČ-, and Îł-Synuclein are intrinsically disordered proteins implicated in physiological processes in the nervous system of vertebrates. α-synuclein (αSyn) is the amyloidogenic protein associated with Parkinsonâs disease and certain other neurodegenerative disorders. Intensive research has focused on the mechanisms that cause αSyn to form amyloid structures, identifying its NAC region as being necessary and sufficient for amyloid assembly. Recent work has shown that a 7-residue sequence (P1) is necessary for αSyn amyloid formation. Although Îł-synuclein (ÎłSyn) is 55% identical in sequence to αSyn and its pathological deposits are also observed in association with neurodegenerative conditions, ÎłSyn is resilient to amyloid formation in vitro. Here, we report a rare single nucleotide polymorphism (SNP) in the SNCG gene encoding ÎłSyn, found in two patients with amyotrophic lateral sclerosis (ALS). The SNP results in the substitution of Met38 with Ile in the P1 region of the protein. These individuals also had a second, common and nonpathological, SNP in SNCG resulting in the substitution of Glu110 with Val. In vitro studies demonstrate that the Ile38 variant accelerates amyloid fibril assembly. Contrastingly, Val110 retards fibril assembly and mitigates the effect of Ile38. Substitution of residue 38 with Leu had little effect, while Val retards, and Ala increases the rate of amyloid formation. Ile38 ÎłSyn also results in the formation of ÎłSyn-containing inclusions in cells. The results show how a single point substitution can enhance amyloid formation of ÎłSyn and highlight the P1 region in driving amyloid formation in another synuclein family member
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