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1.
Our goal was to examine the trajectory of bonding impairment across the first 6 months postpartum in the context of maternal risk, including maternal history of childhood abuse and neglect and postpartum psychopathology, and to test the association between self-reported bonding impairment and observed positive parenting behaviors. In a sample of women with childhood abuse and neglect histories (CA+, n?=?97) and a healthy control comparison group (CA?, n?=?53), participants completed questionnaires related to bonding with their infants at 6 weeks, 4 months, and 6 months postpartum and psychopathology at 6 months postpartum. In addition, during a 6-month postpartum home visit, mothers and infants participated in a dyadic play interaction subsequently coded for positive parenting behaviors by blinded coders. We found that all women, independent of risk status, increased in bonding with their infant over the first 6 months postpartum; however, women with postpartum psychopathology (depression and posttraumatic stress disorder [PTSD]) showed consistently greater bonding impairment scores at all timepoints. Moreover, we found that, at the 6-month assessment, bonding impairment and observed parenting behaviors were significantly associated. These results highlight the adverse effects of maternal postpartum depression and PTSD on mother–infant bonding in early postpartum in women with child abuse and neglect histories. These findings also shed light on the critical need for early detection and effective treatment of postpartum mental illness in order to prevent problematic parenting and the development of disturbed mother–infant relationships. Results support the use of the Postpartum Bonding Questionnaire as a tool to assess parenting quality by its demonstrated association with observed parenting behaviors.  相似文献   

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Both traumatic experiences in their birth families and multiple placement histories lead to increased mental health problems in foster children. The formation of secure attachments to new caregivers could be a protective factor for foster children. The current study focused on the associations between foster parents’ sensitivity, parenting stress and foster children’s attachment behavior as well as behavior problems. The sample consists of 48 children (aged from 1 to 6 years) and their foster caregivers. Attachment behavior and sensitivity were observed during home visits. Furthermore, caregiver reports were used to assess parenting stress and children’s behavior problems. Compared to normative data, foster children showed lower levels of attachment security and more behavior problems. Foster children’s attachment security and behavior problems were predicted significantly or marginally by foster parents’ stress and supportive presence.  相似文献   

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Postpartum negative mood interferes with maternal–infant bonding and carries long-term negative consequences for infant growth. We examined the effects of birth-related risks on mother’s postpartum anxiety and depression. A community cohort of 1,844 low-risk women who delivered a singleton term baby completed measures assessing delivery, emotions during labor, attitudes toward pregnancy and infant, mood regulation, and postpartum anxiety and depression. Under conditions of low risk, 20.5% of parturient women reported high levels of depressive symptoms. Following Cesarean Section Delivery (CSD), 23% reported high depressive symptoms, compared to 19% following Vaginal Delivery (VGD), and 21% after Assisted Vaginal Delivery (AVGD). State anxiety was highest in CSD and lowest in VGD. Mothers undergoing CSD experienced labor as most negative, reported highest somatic symptoms during the last trimester, and were least efficient in regulating negative mood. Postpartum depression was independently associated with higher maternal age, CSD, labor pain, lower negative and higher positive emotions during labor, inefficient mood regulation, somatic symptoms, and more negative and less positive perception of fetus during last trimester. Results demonstrate that elevated depressive symptoms are prevalent in the postpartum even under optimal socioeconomic and health conditions and increase following CSD. Interventions to increase positive infant-related perceptions and emotions may be especially important for promoting bond formation following CSD.  相似文献   

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Systemic sclerosis (SSc, scleroderma) is a devastating, immune-mediated, multisystem disorder characterized by microvasculature damage, circulating autoantibodies, and fibroblast activation, leading to massive fibrosis of skin, vessels, muscles, and visceral organs. Scleroderma causes disability and death as the result of end-stage organ failure. At present, no specific diagnostic nor therapeutic tools are available to handle the disease. In spite of significant effort, the etiology and pathogenesis of SSc remain obscure and, consequently, the disease outcome is unpredictable. Several years ago, Murrell suggested a unifying hypothesis linking the pathogenesis of scleroderma to the generation of a large excess of reactive oxygen species. This hypothesis has been substantiated by several reports indicating the presence of an abnormal redox state in patients with scleroderma. This review will summarize the available evidence supporting the link between free radicals and the main pathological features of scleroderma.  相似文献   

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The present study examined observations of parenting quality (mothers’ emotional availability – EA) during infant bedtimes at 4 points across the infants’ first year, assessing relations between levels and trajectories of EA and infant attachment at 12 months and the role of infant temperament in moderating these associations. The sample (N = 128) was predominantly Euro-American (82.5%) and at low socioeconomic risk. Latent growth curve modeling with latent basis coefficients indicated substantial individual differences in initial levels and slopes in EA trajectories across the first year. Both levels of maternal EA and EA trajectories across the first year predicted 12-month infant attachment security. Although maternal EA tended to decrease across the first year in the full sample, EA trajectories that showed a “bounce-back” between 6 and 12 months, suggesting more successful maternal adaptation to an expanding infant developmental repertoire, predicted greater infant security at 12 months. In addition, linkages between latent EA trajectories and 12-month attachment were moderated by 3-month infant temperamental reactivity and regulation. These findings indicate that infant attachment security is sensitive to both static and dynamic aspects of parenting quality across the first year, and that infant temperament can interact with both in predicting infant attachment.  相似文献   

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This survey study of 176 participants from eight customer service organizations investigated how individual factors moderate the impact of emotional labor strategies on employee well-being. Hierarchical regression analyses indicated that gender and autonomy were significant moderators of the relationships between emotional labor strategies and the personal outcomes of emotional exhaustion, affective well-being, and job satisfaction. Females were more likely to experience negative consequences when engaging in surface acting. Autonomy served to alleviate negative outcomes for individuals who used emotional labor strategies often. Contrary to our hypotheses, emotional intelligence did not moderate the relationship between the emotional labor strategies and personal outcomes. Results demonstrated how the emotional labor process can influence employee well-being.  相似文献   

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Despite differences in presentation, age-related dementing diseases such as Alzheimer’s (AD), Parkinson’s (PD), and Huntington’s diseases (HD), and dementia with Lewy bodies (DLB) may share pathogenic processes. This review aims to systematically assemble and compare findings in various biochemical pathways across these four dementias.PubMed and Google Scholar were screened for articles reporting on brain and biofluid measurements of metals and/or metabolites in AD, PD, HD, or DLB. Articles were assessed using specific a priori-defined inclusion and exclusion criteria. Of 284 papers identified, 198 met criteria for inclusion.Although varying coverage levels of metals and metabolites across diseases and tissues made comparison of many analytes impossible, several common findings were identified: elevated glucose in both brain tissue and biofluids of AD, PD, and HD cases; increased iron and decreased copper in AD, PD and HD brain tissue; and decreased uric acid in biofluids of AD and PD cases. Other analytes were found to differ between diseases or were otherwise not covered across all conditions.These findings indicate that disturbances in glucose and purine pathways may be common to AD, PD, and HD. However, standardisation of methodologies and better coverage in some areas – notably of DLB – are necessary to validate and extend these findings.  相似文献   

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The present study shows that nicotinamide prevents the long-term effect of perinatal asphyxia on dopamine release monitored with in vivo microdialysis in the neostriatum of 3-month-old rats. Perinatal asphyxia was induced by immersing foetuses-containing uterine horns removed from ready-to-deliver rats into a water bath for 16 or 20 min. Sibling, spontaneous, and caesarean-delivered pups were used as controls. Saline or nicotinamide (0.8 mmol/kg, i.p.) was administered to control and asphyxia-exposed animals 24, 48, and 72 h after birth. After weaning, the rats were randomly distributed in laboratory cages for animal care under standard ad libitum laboratory conditions. Approximately 3 months after birth, control and asphyxia-exposed animals were implanted with microdialysis probes into the lateral neostriatum for measuring extracellular monoamine and metabolite levels with HPLC-coupled to an electrochemical detection system under basal, D-amphetamine, and K+-depolarising conditions. There was an asphyxia-dependent decrease of extracellular dopamine levels, mainly observed during the periods when D-amphetamine (100 μM) or KCl (100 mM) was added into the perfusion medium. Compared to that observed in caesarean-delivered controls, the effect of D-amphetamine on dopamine levels was decreased by approximately 30 and 70% in animals exposed to 16 and 20 min of perinatal asphyxia, respectively. The effect of K+-depolarisation was decreased by 45 and 83% in animals exposed to the same periods of asphyxia, respectively. Both effects were prevented by nicotinamide, even if the treatment started 24 h after the insult. The present results support the idea of nicotinamide as an interesting molecule, useful for protecting against anoxia/ischemia occurring at neonatal stages. Nicotinamide can help to restore NADH/NAD+ depletion, but also to inhibit PARP-1 overactivation, a mechanism of action that has attracted attention, representing a novel target for neuroprotection following insults involving energy failure.  相似文献   

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African American women with systemic lupus erythematosus (SLE) have worse disease outcomes compared to their White counterparts. Stressors associated with race may contribute to poorer health in this population through maladaptive behavioral pathways. This study investigated relationships between stress associated with anticipating racism, smoking, and SLE disease activity. Data were from 432 African American women with SLE in the Black Women’s Experiences Living with Lupus (BeWELL) Study. Controlling for sociodemographic and health-related covariates, multivariable regression analyses revealed a significant association between anticipatory racism stress (ARS) and disease activity (p?=?0.00, b?=?1.13, 95% CI [0.43, 1.82]). A significant interaction between ARS and smoking also indicated that smoking exacerbated the effect of ARS on disease activity (p?=?0.04, b?=?1.95, CI?=?0.04, 3.96). Test for evidence of smoking mediating the effect of ARS on disease activity were not statistically significant (z?=?1.77, p?=?0.08). Findings have implications for future SLE disparities research among African American women with SLE.

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Teeth tell the tale of interactions between predator and prey. If a dental battery is made up of teeth that look similar, they are morphologically homodont, but if there is an unspecified amount of regional specialization in size or shape, they are morphologically heterodont. These are vague terms with no useful functional implication because morphological homodonty does not necessarily equal functional homodonty. Teeth that look the same may not function the same. Conical teeth are prevalent in fishes, superficially tasked with the simple job of puncture. There is a great deal of variation in the shape and placement of conical teeth. Anterior teeth may be larger than posterior ones, larger teeth may be surrounded by small ones, and patches of teeth may all have the same size and shape. Such variations suggest that conical dentitions might represent a single morphological solution for different functional problems. We are interested in the concept of homodonty and using the conical tooth as a model to differentiate between tooth shape and performance. We consider the stress that a tooth can exert on prey as stress is what causes damage. To create a statistical measure of functional homodonty, stress was calculated from measurements of surface area, position, and applied force. Functional homodonty is then defined as the degree to which teeth along the jaw all bear/exert similar stresses despite changes in shape. We find that morphologically heterodont teeth are often functionally homodont and that position is a better predictor of performance than shape. Furthermore, the arrangement of teeth affects their function, such that there is a functional advantage to having several smaller teeth surrounding a singular large tooth. We demonstrate that this arrangement of teeth is useful to grab, rather than tear, prey upon puncture, with the smaller teeth dissipating large stress forces around the larger tooth. We show that measurements of how shape affects stress distribution in response to loading give us a clearer picture of the evolution of conically shaped teeth.  相似文献   

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This paper reviews a wide range of recent studies that have linked AD-associated biochemical and physiological changes with oxidative stress and damage. Some of these changes include disruptions in metal ion homeostasis, mitochondrial damage, reduced glucose metabolism, decreased intracellular pH and inflammation. Although the changes mentioned above are associated with oxidative stress, in most cases, a cause and effect relationship is not clearcut, as many changes are interlinked. Increases in the levels of Aβ peptides, the main protein components of the cerebral amyloid deposits of AD, have been demonstrated to occur in inherited early-onset forms of AD, and as a result of certain environmental and genetic risk factors. Aβ peptides have been shown to exhibit superoxide dismutase activity, producing hydrogen peroxide which may be responsible for the neurotoxicity exhibited by this peptide in vitro. This review also discusses the biochemical aspects of oxidative stress, antioxidant defence mechanisms, and possible antioxidant therapeutic measures which may be effective in counteracting increased levels of oxidative stress. In conclusion, this review provides support for the theory that damage caused by free radicals and oxidative stress is a primary cause of the neurodegeneration seen in AD with Aβ postulated as an initiator of this process.  相似文献   

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This article examines relations between coping with general and postoperative pain. Children's and parent's coping ratings, and the contribution of temperament and coping to postoperative adjustment. Before and after day surgery, 7-to 12-year-olds (n = 124) rated their coping with pain. Parents rated their child's coping and temperament pain and distress were rated on the day of and 2 days following surgery. Coping with general and postoperative pain were moderately correlated (median r = .48). Except for distraction, all types of coping strategies were used more frequently for general than postoperative pain. Correlations between child and parent coping ratings were moderate (median r = .36). After controlling for emotionality and medications, lower levels of emotion-focused avoidance and higher levels of distraction were related to lower pain and distress. After controlling for a priori surgical group (no-low pain; moderate-high pain), emotionality, and medications, lower levels of emotion-focused avoidance were related to lower pain and distress but distraction was no longer significant in a number of the regressions. Coping with pain has trait-like qualities but differences in the nature and context of pain create differences in strategy use. Level of pain appears to influence the type of coping strategies used. Interventions should target children's use of distraction and minimize us of emotion-focused avoidance.  相似文献   

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The recent expansion of Nicotine Replacement Therapy to pregnant women and children ignores the fact that nicotine impairs, disrupts, duplicates and/or interacts with essential physiological functions and is involved in tobacco-related carcinogenesis. The main concerns in the present context are its fetotoxicity and neuroteratogenicity that can cause cognitive, affective and behavioral disorders in children born to mothers exposed to nicotine during pregnancy, and the detrimental effects of nicotine on the growing organism. Hence, the use of nicotine, whose efficacy in treating nicotine addiction is controversial even in adults, must be strictly avoided in pregnancy, breastfeeding, childhood and adolescence.  相似文献   

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The purpose of this study was to investigate the impact of depressive and anxiety symptoms on maternal bonding to the infant 2–3 months postpartum and the influence of the mother’s bonding to the infant during pregnancy and to her own caregiver during her childhood on maternal bonding 2–3 months postpartum. This study originated from a community-based cohort study carried out in rural Bangladesh. Trained staff collected data and administrated the questionnaires during the third trimester of pregnancy, at childbirth and 2–3 months postpartum. Maternal depressive and anxiety symptoms were assessed with the Edinburgh Postnatal Depression Scale and the State Anxiety Inventory and the mother’s emotional bonding to the infant with the Postpartum Bonding Questionnaire. The results showed that 11% of the women reported depressive symptoms, 35% anxiety symptoms, 3.4% both depressive and anxiety symptoms and 51% neither depressive nor anxiety symptoms. Mothers with depressive symptoms were older, were poorer, fewer were literate, reported more intimate partner violence and showed lower emotional bonding to their infants 2–3 months postpartum compared to mentally well and anxious mothers. Approximately 11% of the mothers reported mild bonding disturbances and nearly one third of them showed depressive symptoms. Depressive symptoms and giving birth to a girl were negatively associated to a mother’s emotional bonding to her infant, while maternal anxiety symptoms and high bonding to the foetus during pregnancy were positively associated to the mother's emotional bonding to the infant 2–3 months postpartum.  相似文献   

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The increasing data provides enough evidences confirming the involvement of free radicals and other reactive oxygen species (ROS) superoxide radical ( . O 2 ? ), nitric oxide (NO . ), hydrogen peroxide (H2O2) and hydroxyl radicals ( . OH) in a number of physiological and pathological processes. Imbalance between levels of ROS resulting in the body and the capacity of antioxidant defense mechanisms occur oxidative stress (OS). OS is related to a number of structural and functional damages to cells and is involved in the pathogenesis of many diseases, including neurodegenerative diseases such as Alzheimer’s disease, Parkinson’s disease (PD), amyotrophic lateral sclerosis, and Huntington disease. Defects in oxidative phosphorylation and oxidative damage play an important role in neurodegenerative diseases. The aim of this study was to investigate some biomarkers of OS such as the level of lipid peroxidation measured as malondialdehyde (MDA) reactive products and activity of antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT) in the blood of PD patients compared with control group of healthy volunteers. By the present research we report higher levels of MDA products and an imbalance in SOD and CAT enzyme activities in PD patients compared to the control group.  相似文献   

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