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Growth Trajectory

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https://www.readbyqxmd.com/read/28547854/nucleus-accumbens-functional-connectivity-at-age-20-is-associated-with-trajectory-of-adolescent-cannabis-use-and-predicts-psychosocial-functioning-in-young-adulthood
#1
Sarah D Lichenstein, Samuel Musselman, Daniel S Shaw, Stephanie Sitnick, Erika E Forbes
AIMS: To identify trajectories of cannabis use across adolescence, 2) to measure the influence of cannabis use characteristics on functional connectivity of the nucleus accumbens (NAcc), and 3) to assess whether patterns of functional connectivity related to cannabis use are associated with psychosocial functioning 2 years later. DESIGN: The Pitt Mother & Child Project (PMCP) is a prospective, longitudinal study of male youth at high risk for psychopathology based on family income and gender...
May 26, 2017: Addiction
https://www.readbyqxmd.com/read/28545755/are-alcohol-trajectories-a-useful-way-of-identifying-at-risk-youth-a-multiwave-longitudinal-epidemiologic-study
#2
David D Vachon, Robert F Krueger, Daniel E Irons, William G Iacono, Matt McGue
OBJECTIVE: Trajectory approaches are a popular way of identifying subgroups of children and adolescents at high risk for developing alcohol use problems. However, mounting evidence challenges the meaning and utility of these putatively discrete alcohol trajectories, which can be analytically derived even in the absence of real subgroups. This study tests the hypothesis that alcohol trajectories may not reflect discrete groups-that the development of alcohol use is continuous rather than categorical...
June 2017: Journal of the American Academy of Child and Adolescent Psychiatry
https://www.readbyqxmd.com/read/28545003/adaptation-specialization-and-coevolution-within-phytobiomes
#3
REVIEW
David A Baltrus
Growth patterns of individual plants and evolutionary trajectories of plant communities are intimately linked with and are critically affected by host-associated microbiomes. Research across systems has begun to shed light on how these phytobiomes are established under laboratory and natural conditions, and have cultivated hope that a better understanding of the governing principles for host-microbe interactions can guide attempts to engineer microbiomes to boost agricultural yields. One important, yet relatively understudied, parameter in regards to phytobiome membership is the degree to which specialization and coevolution between plant species and microbes provides structure to these communities...
May 22, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28544337/growth-curves-of-normal-serum-total-ige-levels-throughout-childhood-a-quantile-analysis-in-a-birth-cohort
#4
Chiara Sacco, Serena Perna, Donatella Vicari, Marco Alfò, Carl-Peter Bauer, Ute Hoffman, Johannes Forster, Fred Zepp, Antje Schuster, Ulrich Wahn, Thomas Keil, Susanne Lau, Paolo Maria Matricardi
BACKGROUND: Previous studies of serum total IgE (t-IgE) were not able to discriminate well enough atopic from non-atopic subjects, i.e. with or without serum-specific IgE antibodies to allergens. OBJECTIVES: To model growth curves of the total IgE levels in children without atopic sensitization (hereafter defined as "normal" t-IgE levels) and to test their usefulness in predicting atopic sensitization. METHODS: The German Multicentre Allergy Study (MAS), a birth cohort with 1314 recruited newborns, began in 1990 and examined the participants until age 20y...
May 25, 2017: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/28543051/multilevel-and-sex-specific-selection-on-competitive-traits-in-north-american-red-squirrels
#5
David N Fisher, Stan Boutin, Ben Dantzer, Murray M Humphries, Jeffrey E Lane, Andrew G McAdam
Individuals often interact more closely with some members of the population (e.g. offspring, siblings or group members) than they do with other individuals. This structuring of interactions can lead to multilevel natural selection, where traits expressed at the group-level influence fitness alongside individual-level traits. Such multilevel selection can alter evolutionary trajectories, yet is rarely quantified in the wild, especially for species that do not interact in clearly demarcated groups. We quantified multilevel natural selection on two traits, postnatal growth rate and birth date, in a population of North American red squirrels (Tamiasciurus hudsonicus)...
May 23, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28542794/positive-affectivity-and-fear-trajectories-in-infancy-contributions-of-mother-child-interaction-factors
#6
Maria A Gartstein, Gregory R Hancock, Sydney L Iverson
Fear and positive emotionality were considered in a growth modeling context. Mothers, primarily Caucasian (91.9%) and of middle socioeconomic status, participated in play interactions with infants at 4 months (N = 148). Infant fear and positive affectivity were evaluated at 6, 8, 10, and 12 months of age. A linear trajectory was superior in explaining growth for parent report and observation-based indicators of positive affectivity and parent report of fearfulness; a piecewise model explained the nonlinear growth of observation-based fear...
May 24, 2017: Child Development
https://www.readbyqxmd.com/read/28541549/cognitive-development-in-children-up-to-age-11-years-born-after-art-a-longitudinal-cohort-study
#7
Anna Barbuscia, Melinda C Mills
STUDY QUESTION: How does the cognitive development of children conceived after ART (IVF and ICSI) - measured as cognitive skills at age 3, 5, 7 and 11 years - differ over time from those born after natural conception (NC)? SUMMARY ANSWER: Improved measures of cognitive development up to age 5 years were recorded in children conceived with ART compared to NC, which attenuates by 11 years, with ART children still scoring slightly better than NC children. WHAT IS KNOWN ALREADY: Results on the cognitive outcomes of children conceived after ART have been highly contradictory...
May 24, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28541063/getting-together-social-contact-frequency-across-the-life-span
#8
Julia Sander, Jürgen Schupp, David Richter
Frequent social interactions are strongly linked to positive affect, longevity, and good health. Although there has been extensive research on changes in the size of social networks over time, little attention has been given to the development of contact frequency across the life span. In this cohort-sequential longitudinal study, we examined intraindividual changes in the frequency of social contact with family and nonfamily members, and potential moderators of these changes. The data come from the 1998, 2003, 2008, and 2013 waves of the German Socio-Economic Panel (SOEP) study (N = 36,716; age range: 17-85 years)...
May 25, 2017: Developmental Psychology
https://www.readbyqxmd.com/read/28534077/white-matter-injury-in-the-preterm-infant-pathology-and-mechanisms
#9
REVIEW
Stephen A Back
The human preterm brain is particularly susceptible to cerebral white matter injury (WMI) that disrupts the normal progression of developmental myelination. Advances in the care of preterm infants have resulted in a sustained reduction in the severity of WMI that has shifted from more severe focal necrotic lesions to milder diffuse WMI. Nevertheless, WMI remains a global health problem and the most common cause of chronic neurological morbidity from cerebral palsy and diverse neurobehavioral disabilities. Diffuse WMI involves maturation-dependent vulnerability of the oligodendrocyte (OL) lineage with selective degeneration of late oligodendrocyte progenitors (preOLs) triggered by oxidative stress and other insults...
May 22, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28533330/race-and-sex-differences-of-long-term-blood-pressure-profiles-from-childhood-and-adult-hypertension-the-bogalusa-heart-study
#10
Wei Shen, Tao Zhang, Shengxu Li, Huijie Zhang, Bo Xi, Hongbing Shen, Camilo Fernandez, Lydia Bazzano, Jiang He, Wei Chen
This study aims to characterize longitudinal blood pressure (BP) trajectories from childhood in black-white and sex groups and examine the association between childhood level-independent trajectories of BP and adult hypertension. The longitudinal cohort consisted of 2732 adults who had body mass index and BP measured 4 to 15 times from childhood (4-19 years) to adulthood (20-51 years). Model-estimated levels and linear slopes of BP and body mass index at childhood age points were calculated at 1-year intervals using the growth curve parameters and their first derivatives, respectively...
May 22, 2017: Hypertension
https://www.readbyqxmd.com/read/28530435/friends-also-matter-examining-friendship-adjustment-indices-as-moderators-of-anxious-withdrawal-and-trajectories-of-change-in-psychological-maladjustment
#11
Andrea Markovic, Julie C Bowker
The present study evaluated whether 3 indices of friendship adjustment (mutual friendship involvement, friendship stability, friendship quality) are important, but overlooked, moderators of the impact of anxious-withdrawal on trajectories of psychological maladjustment during early adolescence. Participants included 271 young adolescents (51% boys; Mage = 11.83 years; 42% ethnic minority) who completed peer nomination and self-report measures at 3 waves in a longitudinal study. In line with hypotheses, growth curve analyses revealed that anxious-withdrawal predicted less negative psychological adjustment trajectories for friended young adolescents, albeit somewhat differently for boys and girls...
May 22, 2017: Developmental Psychology
https://www.readbyqxmd.com/read/28529329/body-mass-index-growth-trajectories-associated-with-the-different-parameters-of-the-metabolic-syndrome-at-adulthood
#12
K V Giudici, M-F Rolland-Cachera, G Gusto, D Goxe, O Lantieri, S Hercberg, S Péneau
BACKGROUND: Growth trajectories have shown to be related to obesity and metabolic risks in later life, however body mass index (BMI) trajectories according to the presence or absence of metabolic syndrome (MS) and its parameters in adulthood are scarce in literature. OBJECTIVES: To investigate BMI trajectories during childhood in relation to MS and its parameters in adult age. METHODS: A total of 1919 subjects (43.4% male, 20-60y) participated in this retrospective cohort study...
May 22, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28528334/hormones-and-human-and-nonhuman-primate-growth
#13
Robin Miriam Bernstein
The aim of this paper was to review information pertaining to the hormonal regulation of nonhuman primate growth, with specific focus on the growth hormone (GH)-insulin-like growth factor (IGF) axis and adrenal androgens. Hormones of the GH-IGF axis are consistently associated with measures of growth - linear, weight, or both - during the growth period; in adulthood, concentrations of IGF-I, IGF-binding protein-3, and GH-binding protein are not associated with any measures of size. Comparing patterns of dehydroepiandrosterone (DHEA) and DHEA sulfate (DHEAS) may be especially relevant for understanding whether the childhood stage of growth and development is unique to humans and perhaps other apes...
May 19, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28528015/the-mediating-effect-of-mindful-non-reactivity-in-exposure-based-cognitive-behavior-therapy-for-severe-health-anxiety
#14
Erik Hedman, Hugo Hesser, Erik Andersson, Erland Axelsson, Brjánn Ljótsson
Exposure-based cognitive behavior therapy (CBT) has been shown to be effective in the treatment of severe health anxiety, but little is known about mediators of treatment effect. The aim of the present study was to investigate mindful non-reactivity as a putative mediator of health anxiety outcome using data from a large scale randomized controlled trial. We assessed mindful non-reactivity using the Five Facets Mindfulness Questionnaire-Non-Reactivity scale (FFMQ-NR) and health anxiety with the Short Health Anxiety Inventory (SHAI)...
May 2, 2017: Journal of Anxiety Disorders
https://www.readbyqxmd.com/read/28525438/slowing-bmi-growth-trajectories-in-elementary-school-aged-children-the-northeast-iowa-food-and-fitness-initiative
#15
Loren L Toussaint, Kristin Housholder, Katelyn Janssen, Ann Mansfield, Brian A Lynch
This project examines the Northeast Iowa Food and Fitness Initiative, a policy-, community-, and school-based effort to slow children's body mass index (BMI) growth over 6 years. Kindergarteners (K) to fifth graders (5) from 10 different school districts participated (N = 4101). Students with 0 to 1 years of initiative exposure showed greater growth in BMI compared with children who had 2 to 6 years of exposure, resulting in K-5 BMI savings of 1.5 points (6 lb) for median-height boys and girls. Results suggest that changes to policies, communities, and schools may provide effective obesity reduction in children...
July 2017: Family & Community Health
https://www.readbyqxmd.com/read/28525313/a-tunable-three-dimensional-in-vitro-culture-model-of-growth-plate-cartilage-using-alginate-hydrogel-scaffolds
#16
Alek G Erickson, Taylor D Laughlin, Sarah M Romereim, Catherine N Sargus-Patino, Angela K Pannier, Andrew T Dudley
Defining the final size and geometry of engineered tissues through precise control of the scalar and vector components of tissue growth is a necessary benchmark for regenerative medicine, but it has proved to be a significant challenge for tissue engineers. The growth plate cartilage that promotes elongation of the long bones is a good model system for studying morphogenetic mechanisms because cartilage is composed of a single cell type, the chondrocyte; chondrocytes are readily maintained in culture; and growth trajectory is predominately in a single vector...
May 18, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28524803/maternal-and-early-life-nutrition-and-physical-activity-setting-the-research-and-intervention-agenda-for-addressing-the-double-burden-of-malnutrition-in-south-african-children
#17
A Prioreschi, S Wrottesley, C E Draper, S A Tomaz, C J Cook, E D Watson, M N M Van Poppel, R Said-Mohamed, S A Norris, E V Lambert, L K Micklesfield
Early life is important for later health outcomes, yet there are few studies which adequately address all of the potential early life insults that may affect later life health and growth trajectories. This is particularly evident in low- to middle-income countries such as South Africa, where women of childbearing age are particularly vulnerable to high levels of physical inactivity, malnutrition, and obesity. Pregnancy may therefore be an opportune time to change behaviours and improve maternal and offspring health outcomes, and decrease the inter-generational transfer of risk...
2017: Global Health Action
https://www.readbyqxmd.com/read/28523122/sex-differences-in-rat-placental-development-from-pre-implantation-to-late-gestation
#18
J I Kalisch-Smith, D G Simmons, M Pantaleon, K M Moritz
BACKGROUND: A male fetus is suggested to be more susceptible to in utero and birth complications. This may be due in part to altered morphology or function of the XY placenta. We hypothesised that sexual dimorphism begins at the blastocyst stage with sex differences in the progenitor trophectoderm (TE) and its derived trophoblast lineages, as these cells populate the majority of cell types within the placenta. We investigated sex-specific differences in cell allocation in the pre-implantation embryo and further characterised growth and gene expression of the placental compartments from the early stages of the definitive placenta through to late gestation...
2017: Biology of Sex Differences
https://www.readbyqxmd.com/read/28520476/early-life-growth-predictors-of-childhood-adiposity-trajectories-and-future-risk-for-obesity-birth-to-twenty-cohort
#19
Richard J Munthali, Juliana Kagura, Zané Lombard, Shane A Norris
BACKGROUND: There is growing evidence of variations in adiposity trajectories among individuals, but the influence of early life growth patterns on these trajectories is underresearched in low- and middle-income countries. Therefore, our aim was to examine the association between early life conditional weight gain and childhood adiposity trajectories. METHODS: We previously identified distinct adiposity trajectories (four for girls and three for boys) in black South African children (boys = 877; girls = 947)...
May 18, 2017: Childhood Obesity
https://www.readbyqxmd.com/read/28516825/girls-and-boys-trajectories-of-appearance-anxiety-from-age-10-to-15-years-are-associated-with-earlier-maturation-and-appearance-related-teasing
#20
Melanie J Zimmer-Gembeck, Haley J Webb, Lara J Farrell, Allison M Waters
Adolescents' appearance-related concerns can provoke increasing emotional, social, and eating-related problems. The aims of this five-wave (2.5-year), multiple-informant longitudinal study were to (a) examine growth trajectories of appearance anxiety symptoms and appearance esteem, (b) identify whether trajectories differed by gender, and (c) examine several launching factors including parent-reported physical maturation, peer-rated physical appearance, body mass index, and appearance teasing by parents and peers...
May 18, 2017: Development and Psychopathology
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