Mode of birth and DNA methylation at birth, in childhood, and in adolescence: Uncovering the relationship using ALSPAC data

Mode of birth has been linked to offspring health. Changes in DNA methylation (DNAm) may represent a potential mechanism; however, findings are heterogeneous and limited to early infancy. This preregistered study examined whether mode of birth (vaginal birth compared with elective or emergency cesarean section) affects DNAm at birth, in childhood, and adolescence and whether these effects are modified by the postnatal care environment, specifically by breastfeeding and mother-infant bonding. Using data from 876 mother-infant dyads from the U.K. Avon Longitudinal Study of Parents and Children, we examined differentially methylated cytosine-phosphate-guanine dinucleotides and regions associated with mode of birth. DNAm was quantified using Illumina Infinium Human Methylation 450 K BeadChip in cord blood (at birth) and in peripheral blood (at 7 and 15-17 years). Analyses controlled for maternal age, education, smoking during pregnancy, child sex, gestational week at birth, and batch effects. We also examined interactions of mode of birth with breastfeeding practices and mother-infant bonding. In cord blood, two cytosine-phosphate-guanine dinucleotides (cg05230316; cg13230077) were linked to mode of birth (pFDR < .050). DNAm in childhood or adolescence was not statistically associated with mode of birth (pFDR > .050), and breastfeeding and mother-infant bonding were not moderators (p > .050). Overall, findings suggest mode of birth may have a small effect on cord blood DNAm, but these effects may not persist into later developmental stages. Other postnatal influences should be considered, and further investigation is needed to address study limitations. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Psychophysiological strategies for enhancing performance through imagery-skin conductance level analysis in guided vs. self-produced imagery

Athletes need to achieve their optimal level of arousal for peak performance. Visualization or mental rehearsal (i.e., Imagery) often helps to obtain an appropriate level of activation, which can be detected by monitoring Skin Conductance Level (SCL). However, different types of imagery could elicit different amount of physiological arousal. Therefore, this study aims: (1) to investigate differences in SCL associated with two instructional modalities of imagery (guided vs. self-produced) and six different scripts; (2) to check if SCL could differentiate respondents according to their sport expertise. Thirty participants, aged between 14 and 42 years (M = 22.93; SD = 5.24), with different sport levels took part in the study. Participants listened to each previously recorded script and then were asked to imagine the scene for a minute. During the task, SCL was monitored. We analysed the mean value, variance, slope and number of fluctuations per minute of the electrodermal signal. Unsupervised machine learning models were used for measuring the resemblance of the signal. The Wilcoxon signed-rank test was used for distinguishing guided and self-produced imagery, and The Mann-Whitney U test was used for distinguishing results of different level athletes. We discovered that among others, self-produced imagery generates lower SCL, higher variance, and a higher number of fluctuations compared to guided imagery. Moreover, we found similarities of the SCL signal among the groups of athletes (i.e. expertise level). From a practical point of view, our findings suggest that different imagery instructional modalities can be implemented for specific purposes of mental preparation.

Exploring the key drivers of responsive parenting in mothers and fathers - observed and self-reported responsiveness

BACKGROUND

This article explores parental responsiveness - the ability of a parent to react to a child's needs adequately, promptly, and with tenderness and synchrony. Parental responsiveness can be measured using observational and self-report scales. The purpose of this study was to explore whether individual differences in empathy and attachment in mothers and fathers and their satisfaction with their relationship are predictors of parental responsiveness toward infants. Moreover, self-report and observational measures of parental responsiveness were compared.

PARTICIPANTS AND PROCEDURE

A total of 110 triads (mother, father, and child aged 6-10 months) took part in the free play procedure and parents' behaviors towards their children were assessed using the Ainsworth Sensitivity Scale. Moreover, they filled out a set of questionnaires measuring parental self-reported responsiveness, empathy, experiences in close relationships and romantic relationship satisfaction.

RESULTS

Higher empathic concern was connected with higher responsiveness and this was seen in both individual and partner measures. At the individual level, measures of responsiveness (self-report and observational) were not congruent and probably depended on other variables. In couples, there were positive correlations in three aspects of their family functioning: observed and self-reported parental responsiveness as well as relationship satisfaction.

CONCLUSIONS

This study revealed differences between self-reported and observational measures of parental responsiveness, indicating that their results may not always be congruent and could depend on other variables.

The Coronavirus Anxiety Scale: Cross-national measurement invariance and convergent validity evidence

Coronavirus Anxiety Scale (CAS) is a widely used measure that captures somatic symptoms of coronavirus-related anxiety. In a large-scale collaboration spanning 60 countries (Ntotal = 21,513), we examined the CAS's measurement invariance and assessed the convergent validity of CAS scores in relation to the fear of COVID-19 (FCV-19S) and the satisfaction with life (SWLS-3) scales. We utilized both conventional exact invariance tests and alignment procedures, with results revealing that the single-factor model fit the data well in almost all countries. Partial scalar invariance was supported in a subset of 56 countries. To ensure the robustness of results, given the unbalanced samples, we employed resampling techniques both with and without replacement and found the results were more stable in larger samples. The alignment procedure demonstrated a high degree of measurement invariance with 9% of the parameters exhibiting noninvariance. We also conducted simulations of alignment using the parameters estimated in the current model. Findings demonstrated reliability of the means but indicated challenges in estimating the latent variances. Strong positive correlations between CAS and FCV-19S estimated with all three different approaches were found in most countries. Correlations of CAS and SWLS-3 were weak and negative but significantly differed from zero in several countries. Overall, the study provided support for the measurement invariance of the CAS and offered evidence of its convergent validity while also highlighting issues with variance estimation. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Unraveling the link between family of origin and parental responsiveness toward own child

This study investigates the influence of family of origin on parental responsiveness toward own child, taking into account gender differences. A total of 110 triads of mothers, fathers, and their first child aged 6-10 months participated in the standardized Free Play procedure. Parental responsiveness was assessed through observational measures (using Ainsworth procedure) and self-reported scales (Parental Responsiveness Scale). Results revealed correlations between objectively assessed responsiveness and self-reported parental styles in the family of origin, separately for mothers and fathers. Among mothers having daughters, parental sensitivity (an important aspect of observationally measured responsiveness) was positively correlated with having had a liberal loving mother and a negative correlation with an autocratic mother. Cooperation (another aspect of observationally measured responsiveness) was correlated positively with having had a liberal loving mother. Meanwhile, having a liberal unloving mother predicted lover sensitivity and cooperation. Similar correlations were not observed for mothers having sons. Among fathers having daughters, both aspects of observed responsiveness were positively correlated with having had a democratic father and negatively with autocratic or liberal unloving parents. Moreover, having a liberal unloving father and autocratic mother predicted their lower responsiveness toward daughters. These findings highlight the role of family dynamics in shaping parental responsiveness and emphasize the importance of understanding these dynamics in promoting responsive parenting.

Dyadic approach to maturity to parenthood: multilevel study on attachment in expectant and non-expectant couples

OBJECTIVE

This study examined links between attachment styles and maturity to parenthood and its dimensions across different age groups of childless young adult couples. The role of developmental factors (age, assuming parental role) for maturity to parenthood was also investigated.

BACKGROUND

Relational and individual factors have both been confirmed to be crucial for the transition to parenthood. The concept of maturity to parenthood has been linked to individual values, personality traits, and close relationships. However, the question arises whether maturity to parenthood is related to one of the most crucial concepts in family psychology - attachment.

METHOD

Three hundred heterosexual young adult couples aged 20-35 years (M_age  = 26.20; SD  = 3.63) took part. Couples were divided into three groups: 1) 110 couples aged 20-25 (emerging adulthood); 2) 90 couples aged 26-35 (young adulthood); and 3) 100 couples aged 20-35 expecting their first child (third trimester of pregnancy). The main questionnaires used were the Maturity to Parenthood Scale and Close Relationship Experience Scale.

RESULTS

The results indicated that the more avoidant couples had lower maturity to parenthood. A moderation effect of group (pregnancy) was also observed - the effect of attachment-related avoidance was weaker in expectant couples. Women presented higher overall and behavioural maturity to parenthood than men. Furthermore, higher life satisfaction were associated with greater maturity to parenthood.

CONCLUSION

Maturity to parenthood is also created in the dyadic context. When related to lower attachment avoidance, it might greatly facilitate transition to parenthood and future parent - child relations.

The Effects of the COVID-19 Pandemic on the Parenting of Infants: A Couples Study

(1) Background: The COVID-19 pandemic has led to many negative changes in everyday functioning. This study aimed to establish how it impacts parental responsiveness towards their children; (2) Methods: 132 couples (N = 264) who were parents of young children (from 3 to 24 months; M = 12.61; SD = 6.71) participated in this study. The Parental Responsiveness Scale was used to measure parental responsiveness toward their own child and the Polish adaptation of the My Emotions Scale was used to measure emotional reactions to the child's cry. We collected data about perceived stress, fear of being affected by COVID-19, and emotional overload caused by the pandemic. An analysis using actor-partner interdependence models was carried out; (3) Results: there were actor effects for both parental responsiveness and reactions to the child's cry (for all measured aspects (frustration, amusement, anxiety, empathy, sympathy)). For women, parental responsiveness was a negative partner effect of stress, and for men, there was a positive effect of fear of being infected, emotional overload, and stress; (4) Conclusions: these results show how important it is to take care of families and investigate the effects of the pandemic on their functioning.

Do empathy and oxytocin predict responsiveness to a crying infant simulator in expecting and non-expecting couples? A multilevel study

Infant crying is a strong emotional stimulus that elicits caregiving responses in adults. Here we examine the role of empathy (measured with the Polish version of Interpersonal Reactivity Index) and salivary oxytocin in modulating sensitive responsiveness to a crying infant simulator in two groups of heterosexual couples: 111 expecting or 110 not expecting a baby. Sensitive responsiveness was observed during a standardized procedure using the Ainsworth Sensitivity Scale while participants took care of the infant simulator, both individually and as a couple. Other-oriented empathy predicted elevated levels of individual but not couple sensitive responsiveness. More OT reactivity to crying predicted less responsiveness in non-expecting couples, which might be explained by their stronger focus on task performance. This study uniquely combined hormonal, observational and self-report measures in couples, and showed that personality and hormonal correlates of sensitive responsiveness might be studied before the child's birth with the use of infant simulators.

Measuring and Predicting Maturity to Parenthood: What Has Personality Got to Do with It?

Maturity to parenthood is essential for taking on parental roles but remains an understudied issue. Still, close relations between maturity and personality dimensions are commonly emphasized. Thus, conducting research on maturity in context of personality seems a valuable research direction. The present research consists of two studies, focusing on the development and validation of Maturity to Parenthood Scale (MPS), in relation to personality, emotional regulation, coping with challenges, and intimate relationship satisfaction. In both studies, childless adults aged 20-35 years took part: (1) 718 participants (Mage = 25.49; SD = 2.89; 479 women), (2) 150 participants (Mage = 23.69; SD = 3.15; 104 women). All the participants had been in an intimate relationship for at least six months at the time of the study, the majority declared their willingness to have children in the future, had higher education, and were professionally active. The results showed that MPS is a reliable, valid measure comprising the following three subscales: valence, behavioral, and cognitive-emotional maturity to parenthood. The findings also confirmed the importance of broad- and narrow-band individual differences and contextual factors for maturity. MPS may be used in psychoeducation, supporting the transition to biological or adoptive/foster parenthood, as well as in medical and psychological care.

Closeness with a partner and parental bond with a child during the transition to parenthood

OBJECTIVE

The aim of this longitudinal study was to examine the dyadic interdependence of the relationships between partners' perception of closeness with one another and their pre- and postnatal bonds with a child.

RESEARCH DESIGN AND PARTICIPANTS

A total of 213 first-time expectant couples participated in the study both during pregnancy (1st stage) and after the child's birth (2nd stage).

MEASUREMENTS

The participants completed the following measures: the one-item pictorial Inclusion of Other into the Self (IOS) scale and the brief maternal and paternal versions of the Antenatal Attachment Scales (MAAS/PAAS, respectively) and Postnatal Attachment Scales (MPAS/PPAS, respectively).

FINDINGS

The Actor-Partner Interdependence Models (APIM) for distinguishable dyads were performed and revealed the positive effect of parents' perceptions of closeness with their partners regarding both their own and their partners' bond with their child during pregnancy. However, after the child's birth, for both mothers and fathers, only their own perception of closeness with their partners was associated with their bond with their child. Moreover, only the actor effects of bonding with a child during pregnancy as well as the change in perception of closeness with a partner on the partner's bond with their child after birth were found (no partner effect).

KEY CONCLUSIONS

Couple attributes during the transition to parenthood should be emphasized to promote the development of parental pre- and postnatal bonds.

(Re-)activity in the caregiving situation: Genetic diversity within Oxytocin-Vasopressin Pathway is associated with salivary oxytocin and vasopressin concentrations in response to contact with a crying infant-simulator

Oxytocin (OT) and vasopressin (AVP) hormones as well as their receptors (OXTR and AVPR1a) have been deemed crucial for caregiving and sensitive responsiveness to infant cues. However, previous research on genetic polymorphisms and OT and AVP levels in the context of caregiving were sparse and have brought contradictory findings. The aim of this reported observational study was to examine the impact of genetic variations within genes related to OT and AVP signaling pathway on hormones levels' changes in response to the caregiving situation. A total of 221 adult intimate couples (110 childless, non-pregnant and 111 expectant couples) participated in three 10 min sessions, during which they were taking care of a crying life-like simulator. 30 min prior to the first session salivary samples to analyze basal OT and AVP, and polymorphisms in OXTR, AVPR1a and CD38 genes were collected. Subsequent OT and AVP levels were measured 15 min after each session. The two most frequently studied OXTR SNPs (rs53576 and rs2254298) had no or a minor impact on higher OT levels, which were linked to rs1042778, rs13316193, rs2228485, rs2268490, rs4686302 genotypes. AVP levels were affected by rs1042778, rs13316193, rs4686302 and rs237887. OT levels varied depending on the OT (rs2770378, rs4813625), CD38 (rs379686), and 5-HTR2A (rs6314) genotype. OT and AVP levels were also associated with rs6314 (5-HTR2A). AVP levels were linked to ESR1 (rs1884051) and SIM1 (rs3734354) variations. Shorter variants of RS3 and RS1 were associated with lower levels of AVP. In conclusion, analyzed polymorphisms were associated with both the level and changes in OT and AVP hormone levels in the standardized situation of caregiving reactions to infant crying.

Neural Oscillation During Mental Imagery in Sport: An Olympic Sailor Case Study

The purpose of the current study was to examine the cortical correlates of imagery depending on instructional modality (guided vs. self-produced) using various sports-related scripts. According to the expert-performance approach, we took an idiosyncratic perspective analyzing the mental imagery of an experienced two-time Olympic athlete to verify whether different instructional modalities of imagery (i.e., guided vs. self-produced) and different scripts (e.g., training or competition environment) could differently involve brain activity. The subject listened to each previously recorded script taken from two existing questionnaires concerning imagery ability in sport and then was asked to imagine the scene for a minute. During the task, brain waves were monitored using EEG (32-channel g. Nautilus). Our findings indicate that guided imagery might induce higher high alpha and SMR (usually associated with selective attention), whereas self-produced imagery might facilitate higher low alpha (associated with global resting state and relaxation). Results are discussed in light of the neural efficiency hypothesis as a marker of optimal performance and transient hypofrontality as a marker of flow state. Practical mental training recommendations are presented.

Empathy and Hormonal Changes as Predictors of Sensitive Responsiveness towards Infant Crying: A Study Protocol

Sensitive responsiveness refers to parents' ability to recognize and respond to infants' cues and has been linked to parental empathy. Additionally, oxytocin (OT) and vasopressin (AVP) are hormones important for sensitivity and empathy. The aim of this study is to test the links between dispositional empathy along with changing OT and AVP levels and responsiveness to a life-like doll in couples and to verify whether these factors are predictors of responsiveness to a child's cues. Exploratory analyses include predictors of sensitive responsiveness: polymorphisms of OXTR, AVPR1a and CD38 genes, personal characteristics and relational factors. The project employs standardized experimental settings that can be used with non-parents and the assessment of parental sensitive responsiveness towards their child. The participants are couples expecting their first child (111) and childless couples (110). The procedure involves caretaking of a life-like doll. Salivary samples and questionnaire data are collected in a planned manner. In the second part, the expectant couples are invited for the assessment of their sensitivity to their own child (Free Play episodes). Parental sensitivity is assessed using the Ainsworth Sensitivity Scale. This paper presents an interdisciplinary research project that reaches beyond the questionnaire measurement, considering many factors influencing the dynamics of adult-infant interaction.

Validation of the Parental Responsiveness Scale

BACKGROUND

Parental responsiveness is a parent's predisposition to react to their child's verbal and non-verbal cues promptly and adequately. There is no self-report scale that measures this type of behavior. The aim of this study was to construct a valid and useful scale to measure this construct as subjectively reported by parents of young children.

PARTICIPANTS AND PROCEDURE

Two hundred and fifty parents (including 186 mothers) of young children aged from 1 to 18 months (Mage = 8.60, SDage = 4.06) took part in the study. To confirm the external validity of the tool, participants filled in the following questionnaires: the Parental Responsiveness Scale, the Empathic Sensitivity Scale, and the Experience in Close Relationships-Revised Scale - short version.

RESULTS

The confirmatory analysis verified the one-dimensional structure and that the model has a good fit. Moreover, the results of external validation indicated satisfactory correlations between parental responsiveness and empathic concern (r = .30, p < .01), perspective-taking (r = .31, p < .01), and avoidance (r = .23, p < .01) in relationships.

CONCLUSIONS

The Parental Responsiveness Scale is valid and reliable. This scale could be useful in research on family and child development, and on individual differences between parents, but can also be of use in practice.

Dyadic empathy in Polish samples: validation of the Interpersonal Reactivity Index for Couples

BACKGROUND

Empathy as a multidimensional construct is considered a basis of satisfying intimate relationships. The role of other-oriented focus in empathizing with a partner has been highlighted. The Interpersonal Reactivity Index for Couples (IRIC) measures emotional and cognitive empathy displayed in the context of a romantic relationship and expressed towards the partner.

PARTICIPANTS AND PROCEDURE

A total sample of 2339 individuals in intimate relationships (including 1006 couples) participated in the research. Three studies are presented on adaptation of the IRIC to Polish in the context of participants' emotional and relational functioning.

RESULTS

The two-factor structure of the measure was confirmed. However, the specific content of two factors was modified to better fit the data. A reliable and valid measure of empathic tendencies in couples has been obtained. Emotional dyadic empathic concern and cognitive dyadic perspective taking were associated with general emotional and cognitive empathy as well as with relationship satisfaction. Correlations with emotional contagion, stress and attachment were also explored.

CONCLUSIONS

The IRIC is a short, reliable and valid measure of empathic tendencies in couples to be easily implemented in research and practice. Personal traits of both partners should be seen as predictors or correlates of dyadic empathy. The presented research results might be applied to the design of interventions and programs increasing quality of romantic relationships.

Do Physical Activity and Personality Matter for Hair Cortisol Concentration and Self-Reported Stress in Pregnancy? A Pilot Cross-Sectional Study

Background: Physical activity reduces psychosocial stress in pregnant women. Stress levels might be self-reported (psychosocial) or measured with biomarkers, one of which is hair cortisol concentration (HCC). Additionally, personality has been associated with stress and physical activity. Methods: The first aim of our study was to explore the differences in self-reported stress assessed by the Perceived Stress Scale (PSS) and in HCC with regard to physical activity level in pregnant (N = 29) and non-pregnant (N = 21) women. The second aim was to analyze the correlations among perceived stress, HCC, frequency of exercise and personality in the two groups separately. Results: There was a significant difference in frequency of exercise and self-reported stress between the two groups, with a lower level in pregnant women, but no differences in HCC and in personality were found. In the group of pregnant women, there was a significant negative correlation between HCC and frequency of exercise sessions, with the latter correlating positively with openness to experience. In the group of non-pregnant women, perceived stress negatively correlated with extraversion, agreeableness and emotional stability. HCC correlated negatively with conscientiousness. Conclusions: Our findings indicate the importance of physical activity programs dedicated to pregnant women for their life quality.

Parents' personality and maternal experiences in childcare as predictors of postpartum depression in couples in transition to parenthood

OBJECTIVES

Analysis of interrelationships between the five global personality dimensions of both parents and mothers' experiences regarding feeding the baby/childcare, as well as determining their role as predictors of postpartum depression.

METHODS

223 first-time expectant couples participated in the study (I stage), and 143 couples from this group were examined about five months after the childbirth (II stage). The following questionnaires were used:the NEO Five-Factor Inventory (NEO-FFI), the Edinburgh Postnatal Depression Scale (EPDS), and the Mother and Baby Scale (MBAS).

RESULTS

EPDS scores were interrelated in couples. Both parents' Neuroticism measured before the childbirth was associated with higher levels of self-assessed and partner's postpartum depression. Mothers'Neuroticism negatively correlated with global confidence regarding childcare and the child's positive alertness during feeding (which was also associated with a higher female Extraversion). Maternal global confidence in childcare negatively correlated with postpartum depression in both partners. Perceived child's alertness and mother's global confidence significantly mediated the relationship between mothers' Neuroticism (and their Extraversion in the case of child's alertness), and theEPDS scorein women. Partners' similarity in Neuroticism was associated with worse functioning of mothers (higher EPDS scores, lack of confidence), whereas similarity in Openness to experience negatively correlated with fathers' EPDS score, and positively with mothers' global confidence.

CONCLUSIONS

Complex associations between postpartum depression scores and personality dimensions of men and women, and mother's experiences indicate the need to include fathers and couples in studies. Offering the possibility to meet with lactation consultants might be an essential element of support system for new parents.

Prenatal bonds among Polish expectant couples: a brief version of the parental antenatal attachment scales

OBJECTIVE

To examine the psychometric properties of the Maternal and Paternal Attachment Scales (MAAS/PAAS) in a Polish sample of expectant couples.

BACKGROUND

A parental prenatal bond is important for the psychological and health outcomes of children and parents. The MAAS/PAAS is one of the well-established measures for parental prenatal bonding. However, there is a lack of Polish investigations of the factor structure and construct validity of these scales.

METHODS

The sample consisted of 341 Polish expectant couples who were surveyed about their prenatal bond, closeness with their unborn child, relationship satisfaction, and gender-role attitudes towards parenthood. The reliability and construct validity of the MAAS/PAAS were evaluated. A Confirmatory Factor Analysis (CFA) and a Principal Axis Factoring (PAF) were conducted.

RESULTS

The obtained results did not confirm the original factor structures of the MAAS/PAAS. However, in the proposed  single 11-item version for the MAAS/PAAS, two factors equivalent to the original structure were extracted. The scale reliability for the brief MAAS/PAAS version was good. The construct validity was confirmed.

CONCLUSION

The single Polish brief version for the MAAS/PAAS is a reliable and valid measure to use in Polish context. The obtained results support the importance of couple functioning for the MAAS/PAAS.

Risk factors for anxiety and depression among pregnant women during the COVID-19 pandemic: A web-based cross-sectional survey

INTRODUCTION

The article presents a protocol of a cross-sectional study of mental health of pregnant women in relation to the coronavirus disease 19 (COVID-19) pandemic. The primary aim is to compare differences in anxiety and depression scores of pregnant women between countries affected by the COVID-19 pandemic. The secondary aim is to assess demographic, economic, and social aspects affecting maternal anxiety and depression scores among pregnant women worldwide in the time of the COVID-19 pandemic. Finally, we will be able to compare differences in perception of the different aspects of the COVID-19 pandemic (social distancing, restrictions related to delivery) between countries and according to the epidemic status (number of infected patients, number of reported deaths). The comparisons will also be done according to the COVID-19 status of the participants.

METHODS AND ANALYSIS

It is a web-based anonymous survey of pregnant women living in countries affected by the COVID-19 pandemic. The survey is comprised of 3 sections:Web-based recruitment for health research has proven to be cost-effective and efficient. At current times with the COVID-19 pandemic, limited resources and social distancing restrictions, performing a mental health study involving pregnant women on a large international scale cannot be safely conducted without involving social-media.The fears of pregnant women fall into 3 categories: the medical condition, the economic status and the organization of daily activity.The study has received approval of the medical ethics committee and has been registered on Clinicaltrials.gov. Results will be published in peer-reviewed journals and made public through all available media.

How Well Do Couples Care When They Are Expecting Their First Child? Family and Dyadic Predictors of Parental Sensitivity in Expectant Couples

Belsky's Process Model points to family-of-origin (especially experiences of mistreatment in childhood) as well as personality and marital relations as determinants of parenting quality, including parental sensitive responsiveness. Parental sensitivity might be intuitively developed during pregnancy and affects perinatal mental health. However, there is a lack of studies investigating effects of family-of-origin and relationship perceptions on expectant couples' parental sensitive responsiveness. The aim of the presented study was to test mediation and moderation effects of perceived partner's empathic concern and retrospectively assessed abuse experienced in childhood on sensitive parental responsiveness operationalized as caretaking behaviors and emotional reactions to a crying life-like doll. One hundred eleven expectant couples (N = 222; age: M _women = 28.4 years, SD = 3.03; age: M _men = 29.2 years, SD = 3.31; relationship duration: M _years = 6.8, SD = 3.43; gestational week: M = 31.3, SD = 4.58) assessed the extent to which they experienced physical and emotional abuse from their parents in childhood and rated their current partner's empathic concern. In the experimental procedure, couples reacted to a crying life-like doll and were assessed by trained psychologists using the modified Ainsworth Sensitivity Scale to measure couples' sensitive responsiveness. The results confirmed a significant mediational effect of perceived women's (and not men's) empathic concern for the relationship between the reported experience of abuse in family-of-origin by expectant fathers (and not mothers) and couples' sensitivity. Support and interventions regarding couples' empathy and parenting competence can be offered to both mothers and fathers to identify those who are at risk of low parental sensitivity.

Sense of purpose in life and escape from self as the predictors of quality of life in clinical samples

Depression is a leading mental disorder from which suffer Europeans and especially women. In clinical groups with elevated risk of suicidal tendencies, both the negative factors and psychological variables that can protect a person should be analyzed. The aims of the current study were analysis of purpose in life function in perceived quality of life-self-efficacy and life satisfaction among people suffering from depression in comparison with control group and analysis of escape from self (EfS)-function as an indicator of suicidal thoughts occurrence, for suicide attempt and perceived quality of life (life satisfaction). Two studies were conducted on two clinical groups. The first study consists of females, 20 of them with depression and 40 without depression disorder as a control group. Measures used in this study are Purpose in Life Scale, General Self-Efficacy Scale, and Satisfaction with Life Scale (SWLS). The second study consists of 60 participants, including 20 who attempted suicide. Measures used in this study are SWLS Scale and an EfS measure. There is a significant meaning of the sense of purpose of life for well-being and self-efficacy. The ability to maintain the feeling of sense of one's existence seems to be a significant factor that protects from a decrease in life quality and keeps the feeling of being able to deal in difficult situations, as well as helps to accept depression symptoms.

Endoparasites of lizards (Lacertilia) from captive breeding and trade networks

Parasitic infections are widespread among exotic lizards and cause serious problems in both private captive breeding and trade networks. Among 168 lizards obtained from captive breeding (Zoological Garden in Wrocław and private owners) and trade (pet shops and wholesale) the total prevalence of endoparasites was 42.35 %. We detected species of Protozoa, Cestoda, Trematoda - Digenea and Nematoda as well as pseudoparasites. The prevalence of endoparasites was higher in the reptiles obtained from captive breeding (59.5 %) than in those from trade network, however the parasite species spectrum was wider in the animals form pet shops and wholesales.

Self-esteem and styles of coping with stress versus strategies of planning in people with psychopathic personality disorders

BACKGROUND

Psychopathy is a notion that has been difficult to define. The operational definition of psychopathy by Hare is one of the most commonly used in psychology and it is usually identified with the scale used to measure this type of personality, which is the Psychopathy Checklist - Revision (PCL-R). PCL-R is composed of two factors: Factor 1 describes a constellation of psychopathic traits considered by many clinicians to be basic for this type of personality, and Factor 2 describes types of behaviour indicating impulsiveness, lack of stability and antisocial lifestyle. The aim of the research was to verify a hypothesis that people with psychopathic personality disorders are characterised by high self-esteem, unconstructive strategies of planning actions and non-adaptive styles of coping with stress.

MATERIAL/METHODS

The group of participants included 30 people at the age of 22-36 convicted with a legally binding sentence. Methods were: 1. The Psychopathy Checklist-Revision (PCL-R); 2. Antisocial Personality Questionnaire (APQ); 3. Coping Inventory for Stressful Situations (CISS); 4. Generalised Self-Efficacy Scale (GSES).

RESULTS

The participants were diagnosed as psychopaths (PCL-R), and more specifically - as primary psychopaths (APQ). They revealed a grandiose sense of self-worth, increased self-control, impulsive style of functioning, perceived high self-efficacy (which might be considered as a defence mechanism). Psychopaths prefer a coping style focused on emotions and avoidance.

CONCLUSIONS

The hypothesis was confirmed, that people with psychopathic personality disorders are characterised by high self-esteem, unconstructive strategies of planning actions and non-adaptive styles of coping with stress.

Myocardial perfusion SPECT with dipyridamole stress test in cardiac syndrome X

Cardiac syndrome X defines patients with typical anginal chest pain, a positive exercise ECG stress test and angiographically normal coronary arteries. AIM of this study was to evaluate the role of myocardial perfusion SPECT with dipyridamole stress in the diagnosis of cardiac syndrome X.

PATIENTS, METHODS

68 patients with syndrome X aged 32 to 60 years were subjected to myocardial imaging using (99m)Tc-MIBI according to the two-days protocol: at rest and after dipyridamole infusion. Semiquantitative evaluation of the images was based on the assessment of (99m)Tc-MIBI uptake in 17 myocardial segments using a 5-points scale (0 point -- normal uptake, 4 points -- no uptake). Scores obtained in each segment were summed up, constituting the summed rest score (SRS) and summed stress score (SSS).

RESULTS

Mean SRS was 7.9 +/- 4.8 and mean SSS was 7.2 +/- 4.4 (non-significant difference). Individual comparison of SRS and SSS values revealed three patterns of scintigraphic images: 1) in 25 patients (36.8%), a paradoxical improvement of perfusion at stress images was found, 2) in 23 patients (33.8%), the myocardial perfusion deteriorated after dipyridamole, 3) in 20 patients (29.4%), no significant change of the myocardial perfusion between rest and stress images occurred.

CONCLUSIONS

In cardiac syndrome X, myocardial SPECT with dipyridamole stress shows different patterns of myocardial perfusion that reflects heterogeneity of this pathology.

Ambulatory electrocardiographic evaluation of the heart in patients treated by megachemotherapy and bone marrow transplantation

The aim of the study was evaluation of the frequency of conduction defects and cardiac arrhythmias before and one month (once a week) after bone marrow transplantation (BMT). It was evaluated by 24-hour electrocardiography based on the Holter's method. There were 50 patients (mean age 29.0 years) examined who were treated with megachemotherapy based on BuCy2, BuCy4 (busulphan and cyclophosphamide), BEAM (carmustine, etoposide, cytarabine, melphalan) and dexaBEAM (dexa-dexamethason) programs before BMT. No heart conduction defects occurred. The mean heart rate increased after BMT. Tachycardia (> 100/min) was observed in 92.5-98.1% of patients and bradycardia (< 60/min) in 41.6-68.0% patients. In 6% of patients bradycardia below 40/min occurred. The heart rate was increased in patients who previously used anthracycline antibiotics, had anaemia or fever, and in patients after autologous BMT (p < 0.05). The complex ventricular extrasystoles were detected in 20% of patients before megachemotherapy. They were more frequently observed in patients with hypokalemia (p < 0.05). After therapy these extrasystoles were observed in a total of 24% patients. There was a statistically significant correlation between this kind of extrasystole and age. The extrasystoles developed mainly in young men. In 10% they occurred de novo and also mainly in men. The heart failure (III degrees, IV degrees according to NYHA) occurred in 14% of patients and death caused by heart (or multiorgan) damage in 18%. Older patients and those who had higher mean heart rate during the first month after BMT were dying more frequently (p < 0.05).

The effects of dipyridamole stress test on plasma levels of soluble adhesion molecules intracellular adhesion molecule-1, vascular cell adhesion molecule-1, E-selectin and L-selectin in patients with ischemic heart disease and patients with syndrome X

BACKGROUND

Adhesion of activated leukocytes to the endothelium as a result of myocardial ischemia/reperfusion has been shown to be involved in the development of tissue injury. Leukocyte adhesion to the endothelium occurs via adhesion molecules expressed on the surface of both cell types. Upon cell activation these proteins may be released into the circulation and measured in a soluble form.

AIM

To verify whether the dipyridamole stress test, performed in patients with ischemic heart disease (IHD) and in patients with syndrome X, modifies plasma levels of the soluble adhesion molecules vascular cell adhesion molecule-1 (VCAM-1), intracellular adhesion molecule-1 (ICAM-1), E-selectin and L-selectin.

METHODS

Plasma levels of the soluble endothelial adhesion molecules ICAM-1, VCAM-1 and E-selectin, as well as of the soluble leukocyte adhesion molecule L-selectin, were measured in venous blood samples taken before and 7 min after administration of dipyridamole in patients with IHD, patients with syndrome X and healthy individuals. Myocardial perfusion was evaluated using single photon emission tomography. The plasma levels of soluble VCAM-1, ICAM-1, E-selectin and L-selectin were all measured using enzyme-linked immunosorbent assays.

RESULTS

After infusion of dipyridamole, plasma levels of ICAM-1 increased significantly in patients with IHD, whereas they remained unchanged in patients with syndrome X and in the control group. In patients with IHD, the initial plasma levels of VCAM-1, E-selectin and L-selectin, before administration of dipyridamole, were higher than those observed in patients with syndrome X and than those in the control group. Plasma levels of soluble VCAM-1, E-selectin and L-selectin decreased significantly in patients with IHD following the dipyridamole stress test, whereas they remained unchanged in patients with syndrome X, and in the control group.

CONCLUSION

In patients with IHD, administration of dipyridamole induces myocardial ischemia resulting in modification of plasma levels of the soluble adhesion molecules.

Intense acute phase response in ischemic patients

The aim of this study was to estimate the qualitative and quantitative changes of acute phase proteins in patients suffering from coronary heart disease. The study was carried out on 74 patients and 12 healthy volunteers. The patients were divided into three groups as follows: patients with myocardial infarction (n=37), Group I--without heart failure, Group II--with heart failure (II-III NYHA), Group III--patients with unstable angina pectoris (n=35); controls-healthy volunteers (n=12). The immunological measurements were performed at the beginning of hospitalisation (point 0), after 4, 8, 12 and 72 h, and after 6, 9 and 12 days of hospitalisation. The concentrations of C-reactive protein (CRP), alpha1-acid glycoprotein (AGP) and alpha1-antichymotrypsin (ACT) were measured using rocket immunoelectrophoresis according to Laurell. Glycosylation profiles of AGP and ACT were determined using crossed affinity immunoelectrophoresis with Con A as ligand according to Bøg-Hansen. Between Groups I and II statistically significant differences were observed for all investigated parameters. Highest concentration values were observed for Groups II and III; for Group II they appeared earlier than for Group III. The maximal values for reactivity coefficients (AGP-RC and ACT-RC) were observed earlier than the respective maximal values of concentrations. Continuous activation occurring in unstable angina leads to a more rapid increase in the concentrations of acute phase proteins and more marked alterations in their glycosylation profiles. In a way these patients seem to be 'primed' with constant stimulation, so that they respond dramatically to the stimulus of ischemia.

Binding of monoclonal antibodies to platelet glycoproteins Ib and IIb/IIIa in uremic patients

In this study, we have found a reduced binding of monoclonal antibodies (CD42b and CD41a) to glycoproteins Ib and IIb/IIIa of uremic platelets. Presumably, this was due to the altered structure of the sugary part of these glycoproteins. Change in the glycoprotein composition may have effected the disturbed adhesion and aggregation of uremic platelets.

The first 15 minutes of hemodialysis does not affect platelets

In the study, platelet count and volume, granulocyte number, binding of monoclonal antibodies to platelet glycoproteins Ib and IIb/IIIa were evaluated in hemodialyzed patients. Exclusively, the granulocyte count dropped significantly at 15 minutes after the initiation of dialysis as compared to predialysis samples. It seems that contemporary used cuprophane dialyzer membrane is more biocompatibile and does not have major impact on platelets.

Changes of acute phase proteins glycosylation profile as a possible prognostic marker in myocardial infarction

In 24 consecutive patients with myocardial infarction, the concentrations of C-reactive protein, alpha 1-acid glycoprotein and alpha 1-antichymotrypsin, as well as acid alpha 1-glycoprotein and alpha 1-antichymotrypsin glycosylation profiles were estimated. Blood samples were taken at admission, after 4, 8, 12 and 24 h, on 2, 3, 6, 9, and 12 days of hospitalization. All studied patients were divided into 2 groups: 12 patients without clinical or radiological symptoms of acute heart failure and 12 patients with acute heart failure. The results of all investigations were tested statistically to appraise significance of differences between the two investigated groups. At admission, as well as after 6 and 12 h, C-reactive protein concentration was significantly higher in patients who developed heart failure. Similarly, the glycosylation profile of alpha 1-antichymotrypsin, reported as reactivity coefficient, was of good prognostic value from the first time-point on. Development of acute cardiac failure seemed to correlate more with the magnitude of inflammatory reaction (measured by changes in acute phase proteins) than with enzymatically estimated infarct size.

Metabolic control quality and free radical activity in diabetic patients

The role of oxidative/reductive balance derangement in the pathogenesis of diabetic microangiopathy has often been discussed in the last few years. Therefore, we decided to evaluate the influence of intensive insulin therapy on selected indicators of free radical production. The levels of plasma hydrogen peroxide (H2O2) and serum malonyldialdehyde (MDA) were estimated in 15 patients with Type 1 and 15 with Type 2 diabetes before and after 2 weeks of intensive treatment. The initial H2O2 and MDA levels in all cases were significantly higher than in controls. After 2 weeks of treatment, the values for both estimated parameters were significantly lower; however, they were still higher than in the control group. Our results seem to confirm the previous suggestions concerning the relation between metabolic disturbances and oxidative stress in diabetic patients.

[Actions of new iminium compounds against bacteria and fungi. 30. 3-alkoxymethyl-1-hexyl-, 3-alkylthiomethyl-1-hexyl-, 3-alkoxymethyl-1-octyl- and 3-alkylthiomethyl-1-octylbenzimidazolium chlorides]

Syntheses and antimicrobial activity of the title compounds are described. They were obtained by reaction of 1-hexyl- or 1-octylbenzimidazol with chloromethylalkyl ether or chloromethylalkyl sulfide. The antibacterial properties were tested on 13 strains of bacteria and fungi. The best antibacterial activity was exhibited by chlorides with octylthiomethyl and decyloxymethyl groups.

Peroxide plasma level in patients with coronary heart disease as a possible indicator of ischemia during exercise test

BACKGROUND

This study evaluated the possible changes in production of free oxygen species during myocardial ischemia in the course of exercise testing of ischemic coronary disease.

METHODS

Exercise testing was performed on 58 patients with suspected ischemic coronary disease. Plasma hydrogen peroxide (H2O2) level was assayed according to Frew et al. (Anal Chim Acta 1983, 155:139-150) in venous blood samples obtained before the test, at submaximal and maximal work loads, and after 30 minutes of rest.

RESULTS

Hydrogen peroxide plasma level significantly increased (P < 0.001) at maximal work load in patients with positive exercise test results. Patients with negative exercise test results initially manifested a higher H2O2 level that dropped during maximal work load.

CONCLUSIONS

The rise in plasma H2O2 level during myocardial ischemia indicates that intensification of oxygen free radical production occurs. This may be the result of hypoxanthine conversion by xanthine oxidase, catecholamine auto-oxidation, polymorphonuclear neutrophil activation, and/or derangement within mitochondrial electron transfer. The noticed difference between patients with a positive exercise test and those diagnosed as without ischemia may be of clinical relevance.

[Effect of heparin on the interaction between platelets with collagen]

An effect of a standard heparin preparation on the interaction between blood platelets and collagen has been investigated. The experiments have shown, that the addition of heparin in the concentration of 0.3; 0.6 or 0.9 IU/mL did not change the interaction between blood platelets and collagen. Such interaction increased, when heparin concentration was 1,2 IU/mL, and remained unchanged despite the further increase in heparin concentration. The authors suggest that such a course of this interaction results from the stimulating action of heparin added in adequate concentration on protein release from platelet alpha granulations--which bound GP II b/III a complex with collagen.

[The effect of blood pressure changes during hemodialysis on left ventricular systolic function]

Echocardiographic study was performed in 31 uremic patients on maintenance hemodialysis (HD) with no apparent heart failure, valvular heart disease, pericardial effusion or coronary artery disease. On the basis of blood pressure patients were classified into two groups: 1) patients with normal arterial pressure (group I) (n = 19), 2) patients with blood hypertension (group II) (n = 12). Cardiac function was assessed immediately before and after HD session. Left ventricular end-diastolic diameter (EDD), left ventricular end-systolic diameter (ESD) and ejection fraction (EF) were calculated. Body weight, heart rate and mean blood pressure (mBP) were also measured. A significant decrease of EDD was noted in both groups during HD but it was less evident in group II (p < 0.05). ESD decreased significantly in group II (p < 0.01) when it did not change in group I. EF increased significantly only in group II (p < 0.05). Blood pressure decreased during HD in both groups. A significant inverse linear association between EF and ESD was noted during HD in both groups (r = -0.685; p < 0.001) but was more evident in group II. There was no association between and EDD (r = 0.199; NS). Similar analysis shows that ESD was significantly with mBP (group II--r = 0.914; p < 0.001, group I--r = 0.565; p < 0.05). Such association were not found for EDD and RR. Only in group II the decrease in mBP was statistical significantly correlated with the increase in EF. The decrease in EDD during HD exists probably due to changes in intravascular volume.(ABSTRACT TRUNCATED AT 250 WORDS)

[Unusually large thrombus in the left cardiac ventricle in a patient with a history of anterior wall infarction]

The giant size thrombus like a swallow's nest in the left cardiac ventricle in the patient with a history of anterior infarction was reported. In the autopsy a significant narrowing of the left coronary artery and two critical narrowings of the anterior interventricular artery were revealed. The relation between the localization of the pathological changes in the coronary arteries and the thrombi occurring during cardiac infarction was discussed.

[Spastic paralysis of the lower extremities as the first symptom of acute myeloblastic leukemia]

A case of acute myeloblastic leukemia (AML) with spastic paralysis of the lower extremities caused by a tumor of the spinal cord as the first symptoms of the disease is presented. The tumor consisted of leukaemic cells. A diagnosis of AML type M2, according to FAB classification, was established. A complete remission was achieved after 2 courses of chemotherapy. Patient started to walk after intensive rehabilitation. After 14 months of complete remission, recurrence was observed despite an intensified therapy.

Dialyzable factors from uremic serum increase 125I-fibrinogen binding by normal blood platelets

The influence of uremic serum on 125I-fibrinogen binding by normal blood platelets after induction with adenosine diphosphate was evaluated. The study was performed on 12 hemodialyzed uremic patients. The control group included 12 healthy subjects. It has been demonstrated that the uremic serum from the patients before hemodialysis significantly augmented fibrinogen binding by normal blood platelets (33.8 +/- 11.8%) in comparison with control subjects (14.4 +/- 8.9%). After hemodialysis, fibrinogen binding was comparable with the control group (14.9 +/- 10.1%). Uremic toxins removable during hemodialysis are probably responsible for the potentiation of 125I-fibrinogen binding by platelets.