124 research outputs found

    \u27Tis Home Where\u27er the Heart Is

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    \u27Tis home where\u27er the heart is,Where\u27er its living treasures dwell;In cabin or in princely hall,In forest haunt or hermit\u27s cell.\u27Tis bright where\u27er the heart is,Its fairy spells have pow\u27r to bringFresh fountains to the wilderness,And to the desert vernal spring. \u27Tis free where\u27er the heart is,Nor rankling chains, nor dungeon dim,Can check the mind\u27s aspirings,The bounding spirits pealing hymn.The heart gives life its beauty,Its warmth, its radiance and its power,Is sunlight to its rippling stream,And soft dew to its drooping flower

    I\u27m Only Sixteen

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    I\u27m only sixteen, \u27tis a nice little age,I would not be younger or older,Already I\u27ve conn\u27d over Love\u27s mystic page,And warm\u27d when I should have grown colder.I would like to be married,But wedlock, they say, Has troubles which I\u27ve never seen,So, I\u27d rather not barter my freedom away,For I\u27ve only just enter\u27d sixteen. I hate an old maid yet I don\u27t wish to wedUntil I have jilted my dozens;And the beaux who had been by my glances misled,I\u27d give to my young country cousins. Make hay while the sun shines, so wisely they say,Mine\u27s bright, and my pasture is green;I\u27ll think of November though blooming in May,For I\u27ve only just enterd sixteen. I\u27ve done with young fops they are playthings at best,And please while around you they flutter;The schoolgirls are getting to be quite a pest,And I warmly detest bread and butter.I can smile on a man if he\u27s not quite too old,Has whiskers is noble in mien;And i would not object to the music of gold,For I\u27ve only just enter\u27d sixteen

    Perfectionism and the Big Five: Conscientiousness predicts longitudinal increases in self-oriented perfectionism

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    Findings from cross-sectional studies on the relationship between perfectionism and the Big Five personality traits demonstrate that conscientiousness shows significant positive correlations with self-oriented perfectionism, and neuroticism with socially prescribed perfectionism. The question is whether conscientiousness and neuroticism also predict longitudinal changes in self-oriented and socially prescribed perfectionism. A sample of 214 adolescents aged 14-19 years completed measures of the Big Five and perfectionism twice over a period of 5 to 8 months. As was expected, conscientiousness predicted longitudinal increases in self-oriented perfectionism. Neuroticism, however, did not predict any longitudinal increases in perfectionism—neither in self-oriented nor in socially prescribed perfectionism. Providing support for McCrae and Costa’s dynamic personality theory (McCrae & Costa, 1999) which holds that broad personality traits play a part in the development of lower-level personality characteristics, the findings suggest that conscientiousness is a trait that plays a role in the development of self-oriented perfectionism

    Educational Attainment at Age 10–11 Years Predicts Health Risk Behaviors and Injury Risk During Adolescence

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    Purpose: To examine the effect of educational attainment in primary school on later adolescent health. Methods: Education data attainments at age 7 and 11 were linked with (1) primary and secondary care injury consultation/admissions and (2) the Health Behaviour in School-aged Children survey. Cox regression was carried out to examine if attainment in primary school predicts time to injury in adolescence. Results: Pupils that achieve attainment at age 7 but not at age 11 (i.e., declining attainment over time in primary school) are more likely to have an injury during adolescence. These children are also more likely to self-report drinking in adolescence. Conclusions: Interventions aimed at children with declining attainment in primary school could help to improve adolescent health

    Effects of vitamin D supplementation on endothelial function:a systematic review and meta-analysis of randomised clinical trials

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    Background: In addition to regulating calcium homoeostasis and bone health, vitamin D influences vascular and metabolic processes including endothelial function (EF) and insulin signalling. This systematic review and meta-analysis of randomised clinical trials (RCTs) were conducted to investigate the effect of vitamin D supplementation on EF and to examine whether the effect size was modified by health status, study duration, dose, route of vitamin D administration, vitamin D status (baseline and post-intervention), body mass index (BMI), age and type of vitamin D.  Methods: We searched the Medline, Embase, Cochrane Library and Scopus databases from inception until March 2015 for studies meeting the following criteria: (1) RCT with adult participants, (2) vitamin D administration alone, (3) studies that quantified EF using commonly applied methods including ultrasound, plethysmography, applanation tonometry and laser Doppler.  Results: Sixteen articles reporting data for 1177 participants were included. Study duration ranged from 4 to 52 weeks. The effect of vitamin D on EF was not significant (SMD: 0.08, 95 % CI −0.06, 0.22, p = 0.28). Subgroup analysis showed a significant improvement of EF in diabetic subjects (SMD: 0.31, 95 % CI 0.05, 0.57, p = 0.02). A non-significant trend was found for diastolic blood pressure (β = 0.02; p = 0.07) and BMI (β = 0.05; p = 0.06).  Conclusions: Vitamin D supplementation did not improve EF. The significant effect of vitamin D in diabetics and a tendency for an association with BMI may indicate a role of excess adiposity and insulin resistance in modulating the effects of vitamin D on vascular function. This remains to be tested in future studies

    Variation in Phenotype, Parasite Load and Male Competitive Ability across a Cryptic Hybrid Zone

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    BackgroundMolecular genetic studies are revealing an increasing number of cryptic lineages or species, which are highly genetically divergent but apparently cannot be distinguished morphologically. This observation gives rise to three important questions: 1) have these cryptic lineages diverged in phenotypic traits that may not be obvious to humans; 2) when cryptic lineages come into secondary contact, what are the evolutionary consequences: stable co-existence, replacement, admixture or differentiation and 3) what processes influence the evolutionary dynamics of these secondary contact zones?Methodology/principal findingsTo address these questions, we first tested whether males of the Iberian lizard Lacerta schreiberi from two highly genetically divergent, yet morphologically cryptic lineages on either side of an east-west secondary contact could be differentiated based on detailed analysis of morphology, coloration and parasite load. Next, we tested whether these differences could be driven by pre-copulatory intra-sexual selection (male-male competition). Compared to eastern males, western males had fewer parasites, were in better body condition and were more intensely coloured. Although subtle environmental variation across the hybrid zone could explain the differences in parasite load and body condition, these were uncorrelated with colour expression, suggesting that the differences in coloration reflect heritable divergence. The lineages did not differ in their aggressive behaviour or competitive ability. However, body size, which predicted male aggressiveness, was positively correlated with the colour traits that differed between genetic backgrounds.Conclusions/significanceOur study confirms that these cryptic lineages differ in several aspects that are likely to influence fitness. Although there were no clear differences in male competitive ability, our results suggest a potential indirect role for intra-sexual selection. Specifically, if lizards use the colour traits that differ between genetic backgrounds to assess the size of potential rivals or mates, the resulting fitness differential favouring western males could result in net male-mediated gene flow from west to east across the current hybrid zone.Devi Stuart-Fox, Raquel Godinho, Joëlle Goüy de Bellocq, Nancy R. Irwin, José Carlos Brito, Adnan Moussalli, Pavel Široký, Andrew F. Hugall and Stuart J. E. Bair

    Copy Number Variation in Patients with Disorders of Sex Development Due to 46,XY Gonadal Dysgenesis

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    Disorders of sex development (DSD), ranging in severity from mild genital abnormalities to complete sex reversal, represent a major concern for patients and their families. DSD are often due to disruption of the genetic programs that regulate gonad development. Although some genes have been identified in these developmental pathways, the causative mutations have not been identified in more than 50% 46,XY DSD cases. We used the Affymetrix Genome-Wide Human SNP Array 6.0 to analyse copy number variation in 23 individuals with unexplained 46,XY DSD due to gonadal dysgenesis (GD). Here we describe three discrete changes in copy number that are the likely cause of the GD. Firstly, we identified a large duplication on the X chromosome that included DAX1 (NR0B1). Secondly, we identified a rearrangement that appears to affect a novel gonad-specific regulatory region in a known testis gene, SOX9. Surprisingly this patient lacked any signs of campomelic dysplasia, suggesting that the deletion affected expression of SOX9 only in the gonad. Functional analysis of potential SRY binding sites within this deleted region identified five putative enhancers, suggesting that sequences additional to the known SRY-binding TES enhancer influence human testis-specific SOX9 expression. Thirdly, we identified a small deletion immediately downstream of GATA4, supporting a role for GATA4 in gonad development in humans. These CNV analyses give new insights into the pathways involved in human gonad development and dysfunction, and suggest that rearrangements of non-coding sequences disturbing gene regulation may account for significant proportion of DSD cases

    Within-sibship genome-wide association analyses decrease bias in estimates of direct genetic effects

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    Estimates from genome-wide association studies (GWAS) of unrelated individuals capture effects of inherited variation (direct effects), demography (population stratification, assortative mating) and relatives (indirect genetic effects). Family-based GWAS designs can control for demographic and indirect genetic effects, but large-scale family datasets have been lacking. We combined data from 178,086 siblings from 19 cohorts to generate population (between-family) and within-sibship (within-family) GWAS estimates for 25 phenotypes. Within-sibship GWAS estimates were smaller than population estimates for height, educational attainment, age at first birth, number of children, cognitive ability, depressive symptoms and smoking. Some differences were observed in downstream SNP heritability, genetic correlations and Mendelian randomization analyses. For example, the within-sibship genetic correlation between educational attainment and body mass index attenuated towards zero. In contrast, analyses of most molecular phenotypes (for example, low-density lipoprotein-cholesterol) were generally consistent. We also found within-sibship evidence of polygenic adaptation on taller height. Here, we illustrate the importance of family-based GWAS data for phenotypes influenced by demographic and indirect genetic effects
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