Both prenatal and postnatal parental bonding (i.e., the affective tie from parent to child) have important effects on parental and child functioning. However, research on the continuity and ...correlates of parental bonding is lacking. Therefore, the goal of the present study was to examine the stability of bonding levels and to explore distinct bonding patterns with a latent class analysis. Moreover, the correlates of these bonding patterns in the parental-, child-, and contextual domain were studied. Levels of maternal (N = 370) and paternal (N = 292) bonding and potential correlates were assessed at 26 weeks of pregnancy, 6 months, and 24 months postpartum. Results showed moderate stability of bonding from pregnancy to toddlerhood. For both mothers and fathers, 4 distinct bonding patterns were found. Parents with low bonding patterns were characterized by increased anxiety and parenting stress, less partner support, less adaptive personality profiles, and children with difficult temperament. These findings indicate the importance of monitoring young children's parents with poor levels of bonding as their bonding patterns remain stable from pregnancy until toddlerhood and because those parents experience problems in multiple domains.
We study a toy version of a grand-unified theory on the lattice: An SU(3) gauge theory, which experiences a Brout-Englert-Higgs effect due to a single Higgs field in the fundamental representation. ...This yields a perturbative breaking pattern SU(3)→SU(2). We investigate the singlet vector channel, finding a nondegenerate and massive ground state. This is in contradistinction to the perturbative prediction of three massless and five massive vector states, even though the correlation functions of the gauge bosons exhibit a weak-coupling behavior, being almost tree-level-like. However, a combination of perturbation theory with the Fröhlich-Morchio-Strocchi mechanism, and thus passing to gauge-invariant perturbation theory, allows one to predict the physical spectrum in this channel.
Individual risk assessment for atherosclerotic cardiovascular disease is important for safe menopausal hormone prescription. Besides the traditional risk factors, female-specific risk variables ...related to pregnancy and gynecologic conditions importantly contribute to a more tailored risk assessment in women at middle age. Of these, prior pre-eclampsia/HELLP (hemolysis, elevated liver enzymes and low platelets) syndrome and early spontaneous menopause (<40 years) seem to be the strongest adverse risk variables. Concomitant inflammatory disorders should also be taken into account. Adding a coronary artery calcium score with a computed tomography scan to risk assessment has a high predictive value for future cardiovascular events. This should be considered to discriminate between low-risk and high-risk women when uncertainty exists. In women at intermediate risk, menopausal hormone therapy can be easily combined with preventive medication if cardiovascular risk factors are present. In women at higher risk who have severe disabling vasomotor symptoms, a lower dosage of hormone therapy can be considered in good collaboration between the gynecologist and the cardiologist/vascular specialist.
Cardiovascular disease develops 7 to 10 years later in women than in men and is still the major cause of death in women. The risk of heart disease in women is often underestimated due to the ...misperception that females are ‘protected’ against cardiovascular disease. The under-recognition of heart disease and differences in clinical presentation in women lead to less aggressive treatment strategies and a lower representation of women in clinical trials. Furthermore, self-awareness in women and identification of their cardiovascular risk factors needs more attention, which should result in a better prevention of cardiovascular events. In this review we summarise the major issues that are important in the diagnosis and treatment of coronary heart disease in women. (Neth Heart J 2010;18:598–603.)
FEBio: finite elements for biomechanics Maas, Steve A; Ellis, Benjamin J; Ateshian, Gerard A ...
Journal of biomechanical engineering
134, Issue:
1
Journal Article
Peer reviewed
Open access
In the field of computational biomechanics, investigators have primarily used commercial software that is neither geared toward biological applications nor sufficiently flexible to follow the latest ...developments in the field. This lack of a tailored software environment has hampered research progress, as well as dissemination of models and results. To address these issues, we developed the FEBio software suite (http://mrl.sci.utah.edu/software/febio), a nonlinear implicit finite element (FE) framework, designed specifically for analysis in computational solid biomechanics. This paper provides an overview of the theoretical basis of FEBio and its main features. FEBio offers modeling scenarios, constitutive models, and boundary conditions, which are relevant to numerous applications in biomechanics. The open-source FEBio software is written in C++, with particular attention to scalar and parallel performance on modern computer architectures. Software verification is a large part of the development and maintenance of FEBio, and to demonstrate the general approach, the description and results of several problems from the FEBio Verification Suite are presented and compared to analytical solutions or results from other established and verified FE codes. An additional simulation is described that illustrates the application of FEBio to a research problem in biomechanics. Together with the pre- and postprocessing software PREVIEW and POSTVIEW, FEBio provides a tailored solution for research and development in computational biomechanics.
Small wireless trunk accelerometers have become a popular approach to unobtrusively quantify human locomotion and provide insights into both gait rehabilitation and sports performance. However, ...limited evidence exists as to which trunk accelerometry measures are suitable for the purpose of detecting movement compensations while running, and specifically in response to fatigue. The aim of this study was therefore to detect deviations in the dynamic center of mass (CoM) motion due to running-induced fatigue using tri-axial trunk accelerometry. Twenty runners aged 18-25 years completed an indoor treadmill running protocol to volitional exhaustion at speeds equivalent to their 3.2 km time trial performance. The following dependent measures were extracted from tri-axial trunk accelerations of 20 running steps before and after the treadmill fatigue protocol: the tri-axial ratio of acceleration root mean square (RMS) to the resultant vector RMS, step and stride regularity (autocorrelation procedure), and sample entropy. Running-induced fatigue increased mediolateral and anteroposterior ratios of acceleration RMS (p < .05), decreased the anteroposterior step regularity (p < .05), and increased the anteroposterior sample entropy (p < .05) of trunk accelerometry patterns. Our findings indicate that treadmill running-induced fatigue might reveal itself in a greater contribution of variability in horizontal plane trunk accelerations, with anteroposterior trunk accelerations that are less regular from step-to-step and are less predictable. It appears that trunk accelerometry parameters can be used to detect deviations in dynamic CoM motion induced by treadmill running fatigue, yet it is unknown how robust or generalizable these parameters are to outdoor running environments.
Early executive functioning is an important predictor for future development of children’s cognitive skills and behavioral outcomes. Parenting behavior has proven to be a key environmental ...determinant of child executive functioning. However, the association of parental affect and cognitions directed to the child with child executive functioning has been understudied. Therefore, in the present study we examine the associations between parental bonding (i.e., the affective tie from parent to child), parenting stress, and child executive functioning. At 26 weeks of pregnancy, and at 6 months and 24 months postpartum the quality of the maternal (N = 335) and paternal (N = 261) bond with the infant was assessed. At 24 months, postnatal parenting stress and child executive functioning were measured by means of parent-report questionnaires. Results indicated that for both mothers and fathers feelings of bonding negatively predicted experienced parenting stress over time. In addition, for both parents a negative indirect effect of bonding on child executive functioning problems was found via experienced parenting stress. These findings indicate the importance of monitoring parents who experience a low level and quality of early parent-child bonding, as this makes them vulnerable to parenting stress, consequently putting their children at risk for developing executive functioning problems.
•This is the first study on experiences related to legal age limits on accessing donor information•Donor information can be important for identity development•Age limits create challenges in terms of ...dependency on others, autonomy and loyalty to parents•Age limits do not take into account the context of younger siblings within the family•Comprehensive counselling should be available for the whole relational network
What are the lived experiences of donor-conceived people, parents, sperm donors and counsellors related to legal age limits on accessing donor information in the Netherlands?
A phenomenological study was carried out that included 20 donor-conceived individuals, 15 parents, 6 sperm donors and 5 counsellors. Data were collected through online qualitative in-depth interviews and focus groups. The data were analysed using Dahlberg's Reflective Lifeworld Approach.
The results show how: (i) age limits create challenges related to dependency, autonomy and loyalty to parents; (ii) donor information can be important for identity development, which looks different at different ages; (iii) inaccessible information can lead to unfair loss and may be perceived as negative; (iv) relational stability provides a good foundation for dealing with the (in)accessibility of donor information; (v) procedural barriers and age limits increase the inaccessibility of donor information; and (vi) comprehensive counselling is desired for donor-conceived individuals, parents and donors.
This study shows that legal age limits on accessing donor information can lead to several negative consequences. The age limits focus on one individual, which is not appropriate for questions about ancestry that always pertain to a relational network. Counselling should be tailored to the child's needs, and the child's family should be involved. Furthermore, the donor should receive independent counselling.
Background
Due to the lack of high-quality evidence which has hindered the development of evidence-based guidelines, there is a need to provide general guidance on cranioplasty (CP) following ...traumatic brain injury (TBI), as well as identify areas of ongoing uncertainty via a consensus-based approach.
Methods
The international consensus meeting on post-traumatic CP was held during the International Conference on Recent Advances in Neurotraumatology (ICRAN), in Naples, Italy, in June 2018. This meeting was endorsed by the Neurotrauma Committee of the World Federation of Neurosurgical Societies (WFNS), the NIHR Global Health Research Group on Neurotrauma, and several other neurotrauma organizations. Discussions and voting were organized around 5 pre-specified themes: (1) indications and technique, (2) materials, (3) timing, (4) hydrocephalus, and (5) paediatric CP.
Results
The participants discussed published evidence on each topic and proposed consensus statements, which were subject to ratification using anonymous real-time voting. Statements required an agreement threshold of more than 70% for inclusion in the final recommendations.
Conclusions
This document is the first set of practical consensus-based clinical recommendations on post-traumatic CP, focusing on timing, materials, complications, and surgical procedures. Future research directions are also presented.
Schizophrenia (SZ) is a neurodevelopmental disorder with a broad symptomatology, including cognitive symptoms that are thought to arise from the prefrontal cortex (PFC). The neurobiological aetiology ...of these symptoms remains elusive, yet both impaired redox control and PFC dysconnectivity have been recently implicated. PFC dysconnectivity has been linked to white matter, oligodendrocyte (OL) and myelin abnormalities in SZ patients. Myelin is produced by mature OLs, and OL precursor cells (OPCs) are exceptionally susceptible to oxidative stress. Here we propose a hypothesis for the aetiology of cognitive symptomatology in SZ: the redox-induced prefrontal OPC-dysfunctioning hypothesis. We pose that the combination of genetic and environmental factors causes oxidative stress marked by a build-up of reactive oxygen species that, during late adolescence, impair OPC signal transduction processes that are necessary for OPC proliferation and differentiation, and involve AMP-activated protein kinase, Akt-mTOR-P70S6K and peroxisome proliferator receptor alpha signalling. OPC dysfunctioning coincides with the relatively late onset of PFC myelination, causing hypomyelination and disruption of connectivity in this brain area. The resulting cognitive deficits arise in parallel with SZ onset. Hence, our hypothesis provides a novel neurobiological framework for the aetiology of SZ cognitive symptoms. Future research addressing our hypothesis could have important implications for the development of new (combined) antioxidant- and promyelination-based strategies to treat the cognitive symptoms in SZ.
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