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Classification of introns, which is crucial to understanding their evolution and splicing, has historically been binary and has resulted in the naming of major and minor introns that are spliced by their namesake spliceosome. However, a broad range of intron consensus sequences exist, leading us to here reclassify introns as minor, minor-like, hybrid, major-like, major and non-canonical introns in 263 species across six eukaryotic supergroups. Through intron orthology analysis, we discovered that minor-like introns are a transitory node for intron conversion across evolution. Despite close resemblance of their consensus sequences to minor introns, these introns possess an AG dinucleotide at the -1 and -2 position of the 5' splice site, a salient feature of major introns. Through combined analysis of CoLa-seq, CLIP-seq for major and minor spliceosome components, and RNAseq from samples in which the minor spliceosome is inhibited we found that minor-like introns are also an intermediate class from a splicing mechanism perspective. Importantly, this analysis has provided insight into the sequence elements that have evolved to make minor-like introns amenable to recognition by both minor and major spliceosome components. We hope that this revised intron classification provides a new framework to study intron evolution and splicing.
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Evolución Molecular , Intrones , Empalme del ARN , Empalmosomas , Intrones/genética , Empalmosomas/genética , Humanos , Sitios de Empalme de ARN , Animales , Secuencia de Consenso , Eucariontes/genética , Eucariontes/clasificación , Secuencia de BasesRESUMEN
Whether 30-day modified Rankin Scale (mRS) scores can predict 90-day scores is unclear. This study derived and validated a model to predict ordinal 90-day mRS score in an intracerebral hemorrhage (ICH) population using 30-day mRS values and routinely available baseline variables. Adults enrolled in the Antihypertensive Treatment of Acute Cerebral Hemorrhage-2 (ATACH-2) trial between May 2011 and September 2015 with acute ICH, who were alive at 30 days and had mRS scores reported at both 30 and 90 days were included in this post-hoc analysis. A proportional odds regression model for predicting ordinal 90-day mRS scores was developed and internally validated using bootstrapping. Variables in the model included: mRS score at 30 days, age (years), hematoma volume (cm3), hematoma location (deep [basal ganglia, thalamus], lobar, or infratentorial), presence of intraventricular hemorrhage (IVH), baseline Glasgow Coma Scale (GCS) score, and National Institutes of Health Stroke Scale (NIHSS) score at randomization. We assessed model fit, calibration, discrimination, and agreement (ordinal, dichotomized functional independence), and EuroQol-5D ([EQ-5D] utility weighted) between predicted and observed 90-day mRS. A total of 898/1000 participants were included. Following bootstrap internal validation, our model (calibration slope = 0.967) had an optimism-corrected c-index of 0.884 (95% CI = 0.873-0.896) and R2 = 0.712 for 90-day mRS score. The weighted ĸ for agreement between observed and predicted ordinal 90-day mRS score was 0.811 (95% CI = 0.787-0.834). Agreement between observed and predicted functional independence (mRS score of 0-2) at 90 days was 74.3% (95% CI = 69.9-78.7%). The mean ± SD absolute difference between predicted and observed EQ-5D-weighted mRS score was negligible (0.005 ± 0.145). This tool allows practitioners and researchers to utilize clinically available information along with the mRS score 30 days after ICH to reliably predict the mRS score at 90 days.
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Hemorragias Intracraneales , Humanos , Masculino , Femenino , Anciano , Persona de Mediana Edad , Hemorragia Cerebral/complicaciones , Índice de Severidad de la Enfermedad , Escala de Coma de Glasgow , Pronóstico , Anciano de 80 o más AñosRESUMEN
To determine the effects of astaxanthin (ASTX) supplementation on the equine gut microbiota during a deconditioning-reconditioning cycle, 12 polo ponies were assigned to a control (CON; n = 6) or supplemented (ASTX; 75 mg ASTX daily orally; n = 6) group. All horses underwent a 16-week deconditioning period, with no forced exercise, followed by a 16-week reconditioning program where physical activity gradually increased. Fecal samples were obtained at the beginning of the study (Baseline), after deconditioning (PostDecon), after reconditioning (PostRecon), and 16 weeks after the cessation of ASTX supplementation (Washout). Following DNA extraction from fecal samples, v4 of 16S was amplified and sequenced to determine operational taxonomic unit tables and α-diversity and ß-diversity indices. The total number of observed species was greater at Baseline than PostDecon, PostRecon, and Washout (p ≤ 0.02). A main effect of ASTX (p = 0.01) and timepoint (p = 0.01) was observed on ß-diversity, yet the variability of timepoint was greater (13%) than ASTX (6%), indicating a greater effect of timepoint than ASTX. Deconditioning and reconditioning periods affected the abundance of the Bacteroidetes and Fibrobacteres phyla. Physical activity and ASTX supplementation affect the equine gut microbiome, yet conditioning status may have a greater impact.
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Suplementos Dietéticos , Microbioma Gastrointestinal , Condicionamiento Físico Animal , Xantófilas , Animales , Caballos/microbiología , Microbioma Gastrointestinal/efectos de los fármacos , Xantófilas/farmacología , Masculino , Heces/microbiología , FemeninoRESUMEN
INTRODUCTION: The federal Child and Adult Care Food Program (CACFP) improves nutrition and reduces food insecurity among young children by helping cover the food costs for child care providers and families. This nationwide study evaluated the extent and predictors of the CACFP's utilization among licensed child care centers to identify opportunities for expanding CACFP nutrition support. METHODS: Administrative data from the CACFP and child care licensing agencies in 47 states and District of Columbia were compiled and geocoded for 93,227 licensed child care centers. CACFP participation was predicted using a multivariable Bayesian spatial logistic regression model in the sample of low-income areas to target CACFP eligible child care centers. Data were collected in 2020-2021 and analyzed in 2022. RESULTS: Of all licensed child care centers, 36.5% participated in the CACFP, ranging from 15.2% to 65.3% across states; when restricted to low-income areas, 57.5% participated (range, 15.7%-85.7%). Income differences did not explain the large variation in CACFP participation rates across states. Having at least three CACFP sponsoring agencies per state predicted a 38% higher probability of CACFP participation (OR=1.38; 95% Credible Interval=1.08-1.78). CONCLUSIONS: Currently CACFP participation rates among licensed child care centers point to program underutilization and unequal access, particularly in some states and regions. Work at the federal and state levels is warranted to expand participation in the program, above all in low-income areas, so that more young children could eat healthfully with the CACFP.
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Asistencia Alimentaria , Estado Nutricional , Adulto , Niño , Humanos , Preescolar , Teorema de Bayes , Guarderías Infantiles , Cuidado del Niño , Alimentos , Política NutricionalRESUMEN
Purpose: Malignancy after heart transplantation is associated with poor outcomes. At present, no prediction model exists for any malignancy within the first year after transplant. Methods: We studied adults who underwent heart transplantation included in the multicenter, national Scientific Registry of Transplant Recipients from January 2000 through April 2021. Possible predictors of malignancy were identified based on their known association with malignancy. Multiple imputations were conducted for missing values using predictive mean matching. A multivariable logistic regression model for predicting malignancy development within the first year after transplant was developed and internally validated via 500 bootstrapped samples to estimate the optimism-corrected measures of model accuracy and performance. Results: Among the 47 212 recipients comprising 16% females, 76% whites, 7% with prior malignancy, and a median age of 56 years; 865 (2.3% of those with non-missing data) developed malignancy within the first year after transplant. Prior malignancy, older age at heart transplantation, white race, and nonischemic heart failure etiology were the strongest predictors of new malignancy. The optimism-corrected model had modest discrimination (C-statistic: 0.70, 95% CI: 0.69-0.72) and good calibration and performance (calibration slope: 0.96; Cox-Snell R2: 0.063), particularly at lower predicted risk. A nomogram for the practicing clinician was developed. Conclusions: Using selection variables previously linked to cutaneous malignancy, our model was modestly predictive of the development of any malignancy in the first year after heart transplantation. Future research could identify factors that may improve malignancy prediction, including incorporation of time-to-event data.
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Trasplante de Corazón , Neoplasias , Femenino , Adulto , Humanos , Persona de Mediana Edad , Masculino , Modelos Logísticos , Factores de RiesgoRESUMEN
Veterans with disabilities can experience poor quality of life following military service due to the associated negative physical and psychological ramifications. However, participation in physical activities has shown to induce both physical and mental benefits and improve the quality of life of this population. Adaptive sports, an innovative approach to address the unique physical and psychosocial needs of veterans with disabilities, are becoming more widely used as a rehabilitation tool to improve the quality of life for these veterans. This study aimed to determine the acute influence of participation in a single-day, veteran-based, adaptive kayaking and sailing event on the perceived overall health, quality of life, and quality of social life of veterans with varying disabilities. It was hypothesized that all three categories and the sum score of quality of life would reflect a positive acute response after participation in the community-based physical activity event. Veterans responded to three quality of life-related questions using a 5-point Likert scale before and directly after participating in the event. Findings indicated that an adaptive sporting event can have an acute positive influence on the quality of life of veteran participants, with improvements observed in all three categories of perceived quality of life. Therefore, it is advantageous for the whole-health rehabilitation of veterans with disabilities for the Department of Veterans Affairs to continue to provide opportunities for veterans to participate in non-traditional, community-based activities.
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Personas con Discapacidad , Deportes , Veteranos , Estados Unidos , Humanos , Calidad de Vida , Ejercicio FísicoRESUMEN
Poor maternal nutrition during gestation can result in reduced offspring muscle growth and altered muscle metabolism. We hypothesized that over- or restricted-nutrition during gestation would alter the longissimus dorsi muscle (LM) proteome of offspring. Pregnant ewes were fed 60% (restricted), 100% (control), or 140% (over) of National Research Council requirements for total digestible nutrients from day 30 of gestation until parturition. Fetal (RES, CON, OVER) LM were collected at days 90 and 135 of gestation, or from offspring within 24 h of birth. Sarcoplasmic proteins were isolated, trypsin digested, and subjected to multiplexed, label-based quantitative mass spectrometry analysis integrating tandem mass tag technology. Differential expression of proteins was identified by ANOVA followed by Tukey's HSD post hoc tests, and regularized regression via the elastic net. Significance was set at P < 0.05. Over-represented pathways containing differentially expressed proteins were identified by Reactome and included metabolism of proteins, immune system, cellular response to stress/external stimuli, developmental biology, and infectious disease. As a result of maternal diet, a total of 312 proteins were differentially expressed (day 90 = 89 proteins; day 135 = 115 proteins; birth = 131 proteins). Expression of eukaryotic initiation factor (EIF) 2S3, EIF3L, and EIF4G2 was lower in OVER fetuses at day 90 of gestation (P < 0.05). Calcineurin A and mitogen-activated protein kinase 1 were greater in RES fetuses at day 90 (P < 0.04). At day 135 of gestation, pyruvate kinase and lactate dehydrogenase A expression were greater in OVER fetuses than CON (P < 0.04). Thioredoxin expression was greater in RES fetuses relative to CON at day 135 (P = 0.05). At birth, proteins of the COP9 signalosome complex were greater in RES offspring relative to OVER (P < 0.05). Together, these data indicate that protein degradation and synthesis, metabolism, and oxidative stress are altered in a time and diet-specific manner, which may contribute to the phenotypic and metabolic changes observed during fetal development and postnatal growth.
Poor maternal diet during gestation results in changes in body composition and metabolism in the offspring. Here, we demonstrate that over- and restricted-feeding during gestation alter global protein expression in the longissimus dorsi muscle of offspring during gestation and just after birth. These protein changes are related to protein synthesis and degradation, stress responses, metabolism, and oxidative stress. Proteins related to the initiation of protein translation were increased in offspring of over-fed dams at mid-gestation, while changes in abundance of enzymes associated with metabolism were altered in late gestation and just after birth. In offspring of restricted-fed ewes, proteins relating to cell signaling were increased at mid-gestation, while again, changes in late gestation and birth were related to metabolism, protein degradation, and stress responses. Together, these may provide a mechanism by which poor maternal diet during gestation alters the poor growth and development that occurs in these offspring.
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Fenómenos Fisiológicos Nutricionales de los Animales , Proteoma , Animales , Dieta/veterinaria , Femenino , Fenómenos Fisiologicos Nutricionales Maternos , Músculos , Embarazo , OvinosRESUMEN
Importance: More than 45 countries and several local jurisdictions have implemented sugar-sweetened beverage (SSB) taxes to improve nutrition and population health, and evidence on their outcomes to date is essential to inform policy discussions. Responding to this need, the World Health Organization commissioned a systematic literature review on the outcomes of fiscal policies, including SSB taxes. Objective: To assess the associations of implemented SSB taxes with prices, sales, consumption, diet, body weight, product changes, unintended consequences, health, and pregnancy outcomes. Data Sources: Searches of 8 bibliographic databases (Business Source Complete, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, CINAHL, EconLit, PsycINFO, PubMed, and Scopus) were performed from database inception through June 1, 2020, with no language or setting restrictions. Grey literature was assessed using 14 sources and government websites. Study Selection: The review included primary studies of implemented SSB taxes. Data Extraction and Synthesis: The review followed the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. For prices, sales and consumption, results were meta-analyzed using a 3-level random-effects model. Study quality was assessed at the outcome level. Main Outcomes and Measures: Tax pass-through rate for prices, percentage reduction in SSB demand, and price elasticity of demand for sales and consumption. Heterogeneity was assessed using τ2 and the I2 statistic. Results: A total of 86 articles were eligible, with 62 studies contributing to the meta-analysis. The overall tax pass-through rate was 82% (95% CI, 66% to 98%; P < .001, I2 = 99%), suggesting tax undershifting. The demand for SSBs was highly sensitive to tax-induced price increases, with the price elasticity of demand of -1.59 (95% CI, -2.11 to -1.08; P < .001; I2 = 100%) and a mean reduction in SSB sales of 15% (95% CI, -20% to -9%; P < .001; I2 = 100%). There was no evidence of substitution to untaxed beverages, and changes in SSB consumption were not significant. The narrative synthesis found reformulation and reduced sugar content of taxed beverages for tiered taxes, cross-border shopping in most studies of local-level taxes, and no negative changes in employment. Data on the heterogeneity of SSB tax outcomes across subpopulations were limited. Conclusions and Relevance: In this systematic review and meta-analysis of implemented SSB taxes worldwide, SSB taxes were associated with higher prices and lower sales of taxed beverages.
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Bebidas Azucaradas , Bebidas , Peso Corporal , Comercio , Humanos , ImpuestosRESUMEN
Importance: Fiscal policy is a promising approach to incentivizing better food choices and reducing the burden of chronic disease. To inform guidelines on using fiscal policies, including taxes and subsidies, to promote health, the World Health Organization commissioned a systematic review and meta-analysis of the worldwide literature on the outcomes of such policies for food products. Objective: To assess the outcomes of implemented food taxes and subsidies for prices, sales, consumption, and population-level diet and health. Data Sources: Eight bibliographic databases were searched for peer-reviewed literature and 14 data sources along with governmental websites were searched for grey literature that were published from database inception through June 1, 2020. There were no language and setting restrictions. Study Selection: Only primary studies of implemented food taxes and subsidies were considered for inclusion. Data Extraction and Synthesis: The Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) reporting guideline was followed. A 3-level random-effects model was used to conduct a meta-analysis of sales and consumption outcomes of fruit and vegetable subsidies. Other outcomes were analyzed in a narrative synthesis. Main Outcomes and Measures: Study estimates in the meta-analysis were combined using a price elasticity measure for sales and consumption outcomes. Heterogeneity was assessed using the I2 statistic and τ2. Studies varied in how diet and health were measured. Results: A total of 54 articles were included in the systematic review, of which 15 studies were included in the meta-analysis. Most food subsidies targeted fruits and vegetables and populations with low income, whereas the evidence on food taxes was primarily from the nonessential energy-dense food tax in Mexico. Sales of subsidized fruits and vegetables increased significantly, with an estimated price elasticity of demand of -0.59 (95% CI, -1.04 to -0.13 [P = .02]; 95% prediction interval, -2.07 to 0.90; I2 = 92.4% [95% CI, 89.0%-94.8%; P < .001]), suggesting inelastic demand. There was no significant change in the consumption of subsidized fruits and vegetables, with an estimated price elasticity of demand of -0.17 (95% CI, -0.49 to 0.15 [P = .26]; 95% prediction interval, -1.01 to 0.67; I2 = 76.2% [95% CI, 54.3%-87.6%; P < .001]). Food excise taxes were associated with higher prices and reduced sales. Evidence was limited on the differential outcomes of food taxes and subsidies across subpopulations. Conclusions and Relevance: Results of this systematic review and meta-analysis indicated that fruit and vegetable subsidies were associated with a moderate increase in fruit and vegetable sales. Further research is warranted to understand the implications of food taxes and subsidies for population-level consumption, diet, and health outcomes.
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Promoción de la Salud , Impuestos , Dieta , Humanos , Evaluación de Resultado en la Atención de Salud , VerdurasRESUMEN
PREMISE: The functional significance of leaf margins has long been debated. In this study, we explore influences of climate, leaf lobing, woodiness, and shared evolutionary history on two leaf margin traits within the genus Pelargonium. METHODS: Leaves from 454 populations of Pelargonium (161 species) were collected in the Greater Cape Floristic Region and scored for tooth presence/absence and degree of lobing. Tooth density (number of teeth per interior perimeter distance) was calculated for a subset of these. We compared five hypotheses to explain tooth presence and density using mixed effect models. RESULTS: Tooth presence/absence was best predicted by the interaction of leaf lobing and mean annual temperature (MAT), but often in patterns opposite those previously reported: species were more likely to be toothed with warmer temperatures, particularly for unlobed and highly lobed leaves. In contrast, tooth density was best predicted by the interaction of MAT and the season of most rain; density declines with temperature as consistent with expectations, but only in winter-rain dominated areas. Woody and nonwoody species within Pelargonium have similar associations between tooth presence/absence and MAT, contrary to the expectation that patterns within nonwoody species would be insignificant. CONCLUSIONS: We conclude Pelargonium leaf margins show predictable responses to climate, but these responses are complex and can contradict those found for global patterns across plant communities.
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Clima , Pelargonium , Evolución Biológica , Filogenia , Hojas de la PlantaRESUMEN
BACKGROUND: Nyssorhynchus darlingi (also known as Anopheles darlingi) is the primary malaria vector in the Amazon River Basin. In Brazil, analysis of single nucleotide polymorphisms (SNPs) previously detected three major population clusters, and a common garden experiment in a laboratory setting revealed significant population variation in life history traits. Increasing temperatures and local level variation can affect life history traits, i.e. adult longevity, that alter vectorial capacity with implications for malaria transmission in Ny. darlingi. METHODS: We investigated the population structure of Ny. darlingi from 7 localities across Brazil utilizing SNPs and compared them to a comprehensive Ny. darlingi catalog. To test the effects of local level variation on life history traits, we reared F1 progeny from the 7 localities at three constant temperatures (20, 24 and 28 °C), measuring key life history traits (larval development, food-starved adult lifespan, adult size and daily survival). RESULTS: Using nextRAD genotyping-by-sequencing, 93 of the field-collected Ny. darlingi were genotyped at 33,759 loci. Results revealed three populations (K = 3), congruent with major biomes (Amazonia, Cerrado and Mata Atlântica), with greater FST values between biomes than within. In the life history experiments, increasing temperature reduced larval development time, adult lifespan, and wing length in all localities. The variation of family responses for all traits within four localities of the Amazonia biome was significant (ANOVA, P < 0.05). Individual families within localities revealed a range of responses as temperature increased, for larval development, adult lifespan, wing length and survival time. CONCLUSIONS: SNP analysis of several Brazilian localities provided results in support of a previous study wherein populations of Ny. darlingi were clustered by three major Brazilian biomes. Our laboratory results of temperature effects demonstrated that population variation in life history traits of Ny. darlingi exists at the local level, supporting previous research demonstrating the high plasticity of this species. Understanding this plasticity and inherent variation between families of Ny. darlingi at the local level should be considered when deploying intervention strategies and may improve the likelihood of successful malaria elimination in South America.
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Anopheles/fisiología , Rasgos de la Historia de Vida , Fenotipo , Temperatura , Adaptación Fisiológica/fisiología , Animales , Brasil , Ecosistema , Malaria/transmisión , Mosquitos Vectores/fisiología , Dinámica PoblacionalRESUMEN
OBJECTIVES: Patients with chronic pancreatitis (CP) are at increased risk of low bone mineral density (BMD), although the prevalence of low BMD in patients with CP in the United States is lacking. We aimed to determine the prevalence of low BMD and identify potential risk factors, including hypogonadism and use of opioid medications, in subjects with CP in the United States. METHODS: This was a prospective, observational study. Subjects with CP underwent dual-energy x-ray absorptiometry scan. Blood was assayed for vitamin D, sex hormones, and a metabolic panel. History was obtained for fractures, menopause, hypogonadal symptoms, and opioid medication doses. Low BMD was defined by both World Health Organization and the International Society for Clinical Densitometry criteria. RESULTS: Depending on criteria used, 37% to 55% of our cohort had low BMD. Subjects with low and normal BMD had similar vitamin D levels. Hypogonadism was present in 27% of nonmenopausal subjects and was associated with reduced lumbar spine BMD in subjects 30 years or older. CONCLUSIONS: Patients with CP are at increased risk of low BMD, which is likely multifactorial. Hypogonadism, possibly related to opioid pain medications, may be an independent risk factor for low BMD in CP.
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Densidad Ósea , Hipogonadismo/epidemiología , Pancreatitis Crónica/epidemiología , Vitamina D/sangre , Absorciometría de Fotón , Adulto , Comorbilidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , Estudios Prospectivos , Factores de Riesgo , Estados Unidos/epidemiologíaRESUMEN
Functional traits in closely related lineages are expected to vary similarly along common environmental gradients as a result of shared evolutionary and biogeographic history, or legacy effects, and as a result of biophysical tradeoffs in construction. We test these predictions in Pelargonium, a relatively recent evolutionary radiation. Bayesian phylogenetic mixed effects models assessed, at the subclade level, associations between plant height, leaf area, leaf nitrogen content and leaf mass per area (LMA), and five environmental variables capturing temperature and rainfall gradients across the Greater Cape Floristic Region of South Africa. Trait-trait integration was assessed via pairwise correlations within subclades. Of 20 trait-environment associations, 17 differed among subclades. Signs of regression coefficients diverged for height, leaf area and leaf nitrogen content, but not for LMA. Subclades also differed in trait-trait relationships and these differences were modulated by rainfall seasonality. Leave-one-out cross-validation revealed that whether trait variation was better predicted by environmental predictors or trait-trait integration depended on the clade and trait in question. Legacy signals in trait-environment and trait-trait relationships were apparently lost during the earliest diversification of Pelargonium, but then retained during subsequent subclade evolution. Overall, we demonstrate that global-scale patterns are poor predictors of patterns of trait variation at finer geographic and taxonomic scales.
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Evolución Biológica , Ambiente , Geraniaceae/fisiología , Clima , Modelos Lineales , Filogenia , Carácter Cuantitativo HeredableRESUMEN
Strengths constitute an important element of developmental assessments. It is consistent with evidence-based practice to use assessment tools that adequately measure a given construct and are appropriate for use with their targeted population. The Strengths Assessment Inventory-Youth Version (SAI-Y; Rawana & Brownlee, 2010)-a self-report measure of personal strengths, self-concept, and emotional functioning-was administered to 230 male and female adolescent offenders. Confirmatory factor analyses revealed that the SAI-Y's factor structure demonstrated an acceptable fit overall, while some factors fit the data well, and fewer factors displayed a questionable fit. A majority of scale scores were found to exhibit good reliability for both sexes, with three empirical scale scores demonstrating poor reliability. In addition, scores on the SAI-Y also achieved satisfactory convergent and divergent validity. Total strength scores were significantly correlated in the expected direction with most theoretically related measures of emotional and behavioral functioning (e.g., self-esteem, treatment readiness, antisocial attitudes). Lastly, moderate gender effects and small ethnicity differences in response patterns were found. This was the first validation study of the SAI-Y with a justice-involved sample and the results suggest it is an appropriate measure for use with both male and female justice-involved young persons in detention and in the community. (PsycINFO Database Record
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Delincuencia Juvenil/psicología , Psicometría/instrumentación , Autoevaluación (Psicología) , Encuestas y Cuestionarios/normas , Adolescente , Niño , Femenino , Humanos , Masculino , Reproducibilidad de los ResultadosRESUMEN
Evolutionary radiations with extreme levels of diversity present a unique opportunity to study the role of the environment in plant evolution. If environmental adaptation played an important role in such radiations, we expect to find associations between functional traits and key climatic variables. Similar trait-environment associations across clades may reflect common responses, while contradictory associations may suggest lineage-specific adaptations. Here, we explore trait-environment relationships in two evolutionary radiations in the fynbos biome of the highly biodiverse Cape Floristic Region (CFR) of South Africa. Protea and Pelargonium are morphologically and evolutionarily diverse genera that typify the CFR yet are substantially different in growth form and morphology. Our analytical approach employs a Bayesian multiple-response generalized linear mixed-effects model, taking into account covariation among traits and controlling for phylogenetic relationships. Of the pairwise trait-environment associations tested, 6 out of 24 were in the same direction and 2 out of 24 were in opposite directions, with the latter apparently reflecting alternative life-history strategies. These findings demonstrate that trait diversity within two plant lineages may reflect both parallel and idiosyncratic responses to the environment, rather than all taxa conforming to a global-scale pattern. Such insights are essential for understanding how trait-environment associations arise and how they influence species diversification.
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Evolución Biológica , Pelargonium/genética , Proteaceae/genética , Adaptación Fisiológica , Teorema de Bayes , Clima , Ambiente , Fenotipo , Filogenia , Hojas de la Planta/anatomía & histología , SudáfricaRESUMEN
Nearly four decades have passed since a link was first established between alcohol consumption during pregnancy and a particular pattern of birth defects. Since then, autopsy, longitudinal, structural imaging, and functional imaging studies have revealed a great deal about the teratogenic effects of alcohol. This paper provides a comprehensive summary of the findings from the neurocognitive and behavioral literature on fetal alcohol spectrum disorder (FASD) and outlines the unique profile of cognitive deficits associated with it. We describe diagnostic issues as well as factors contributing to the heterogeneity of the FASD cognitive presentation. Next, we review research on the impact of prenatal alcohol exposure on intellectual functioning, attention, executive functioning, learning and memory, language, quantitative reasoning, and social cognition. In our opinion, future research can now begin to focus on FASD-specific interventions directly informed by the rich body of neurocognitive findings accumulated thus far. WIREs Cogn Sci 2013, 4:81-92. doi: 10.1002/wcs.1202 For further resources related to this article, please visit the WIREs website.
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Individuals with FASD exhibit deficits in many domains that can include memory, learning, behavioural inhibition, executive functioning, interpersonal skills, and language. These deficits have serious implications for affected persons when they become engaged in the legal system. In 2004, Moore and Green reviewed case law and psychological literature which suggested that FASD-related deficits placed affected individuals at a significant disadvantage in the justice system. According to them, this disadvantage stemmed from the limited awareness and knowledge of FASD demonstrated by key players in the justice system, as well as the scarcity of effective interventions in place to rehabilitate affected defendants. The aim of the current paper is to assess the extent to which awareness of FASD-related issues in the Canadian justice system has advanced since the publication of Moore and Green's conclusions. First, the deficits associated with FASD and their implications for the justice system are described. Next, recent case law and psychological evidence are reviewed as we consider issues of witness reliability and false confessions. The significance of FASD for sentencing, fitness to stand trial, and the Not Criminally Responsible by Reason of Mental Disorder defence are also briefly discussed. Finally, emerging system wide responses to FASD-related issues are presented. Overall, it appears that the call for closer examination of FASD by the justice system has been answered, but a need for increased education and awareness remains.
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Víctimas de Crimen/legislación & jurisprudencia , Derecho Penal/legislación & jurisprudencia , Criminales , Trastornos del Espectro Alcohólico Fetal/diagnóstico , Víctimas de Crimen/psicología , Derecho Penal/normas , Criminales/psicología , Femenino , Trastornos del Espectro Alcohólico Fetal/psicología , Humanos , Masculino , EmbarazoRESUMEN
Conflicting findings exist regarding the risks of low to moderate levels of alcohol use during pregnancy. A recent study from Australia has suggested that mild gestational drinking is not associated with adverse fetal effects, and may even be associated with favorable outcomes as compared to "no drinking".The study may lead women to continue consuming alcohol throughout pregnancy, despite methodological limitations that render its conclusions uncertain. This review discusses the challenges of assessing long-term effects of moderate drinking during pregnancy. Recommendations are provided for researchers investigating the effects of prenatal alcohol consumption on subsequent developmental outcomes in children.
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Consumo de Bebidas Alcohólicas/efectos adversos , Efectos Tardíos de la Exposición Prenatal/epidemiología , Proyectos de Investigación , Australia/epidemiología , Niño , Conducta Infantil/efectos de los fármacos , Trastornos de la Conducta Infantil/inducido químicamente , Trastornos de la Conducta Infantil/epidemiología , Femenino , Humanos , Embarazo , Factores de TiempoRESUMEN
Chemotherapy and endocrine treatments for breast cancer are believed to increase risk of osteoporosis by causing early menopause in premenopausal women and by further depleting estrogen levels in postmenopausal women. Multivariate analyses were used to evaluate the contributions of 7 predictors (age, body mass index [BMI], family history of osteoporosis, months since menopause, past use of chemotherapy, and current use of tamoxifen or aromatase inhibitors) in explaining variability in bone mineral density (BMD) at the hip and the spine and bone turnover in 249 postmenopausal women who are breast cancer survivors. This report was an analysis of baseline data from a federally funded (1 R01 NR07743-01A1) intervention study on osteoporosis prevention. Mean age of the women was 58.5 years, and average BMI was 26.7 kg/m; 98% were white. All had measurable bone loss, 167 had chemotherapy, 76 were on tamoxifen, and 21 were on aromatase inhibitors. Women with higher BMI had higher BMD at the hip (P < .001) and the spine (P = .004). Women on tamoxifen had lower measures of bone formation (Alkphase B) (P < .001), suggesting less bone turnover, and higher BMD at the hip (P = .035). There was a trend for women who had received chemotherapy to have lower BMD at the spine (P = .06). The implications of these findings are discussed in the article.
Asunto(s)
Densidad Ósea/fisiología , Remodelación Ósea/fisiología , Neoplasias de la Mama/complicaciones , Osteoporosis/etiología , Posmenopausia , Adulto , Anciano , Inhibidores de la Aromatasa , Índice de Masa Corporal , Neoplasias de la Mama/fisiopatología , Calcio , Difosfonatos , Femenino , Cadera/fisiología , Humanos , Persona de Mediana Edad , Osteoporosis/fisiopatología , Proyectos Piloto , Factores de Riesgo , Columna Vertebral/fisiología , Tamoxifeno , Vitamina DRESUMEN
The quantification of abdominal fat is a marker of health risk. While dual-energy x-ray absorptiometry (DEXA) is easily applied, it measures overall fat, although abdominal fat may be a better indicator of health risk from obesity. We have evaluated whether a subcomponent of DEXA measurements correlates better with computed tomography (CT) for body fat than those traditionally used. Forty-seven healthy adults (22 M/25 F), aged 54.5+/-15.8 yr (mean+/-SD), with BMI of 27.1+/-4.6 kg/m2 participated in a cross-sectional study. Body fat was measured using abdominal CT and DEXA for total fat, trunk fat, and a modified trunk measurement that excludes the chest, termed "lower trunk," and compared. The coefficient of variation for DEXA measurements for trunk, lower trunk, and total body were 1.98, 3.12, and 0.85%, respectively. Mean DEXA for percentage fat ranged from 31.7% to 34.1% for trunk, lower trunk, and total body, compared to 54.2% for abdominal CT (p<0.003 for each pairwise comparison). Lower trunk, whole trunk, and total body DEXA measurements were not different. Measurement of subcomponents of fat content by DEXA is not superior to whole body measurements and remains consistently lower than measurements by CT.