Rima Azar

The Association of Major Depression, Conduct Disorder, and Maternal Overcontrol with a Failure to Show a Cortisol Buffered Response in 4-Month-Old Infants of Teenage Mothers

BACKGROUND Adolescent pregnancy can be associated with major depression (MD) and conduct disorder (CD). Some infants of adolescent mothers are prenatally exposed to these factors, which may result in heightened risk for perturbations of their stress systems. Between 2 and 4 months, a normal shift occurs in the adrenocortical system in which we observe a marked decrease in infant cortisol response when facing mild stressors. This study aimed to explore whether MD (lifetime, during pregnancy, postpartum), CD, and maternal overcontrol are associated with increased cortisol reactivity in 4-month-old infants of teenage mothers. METHODS Using arm restraint as a stressor, morning salivary cortisol was taken prestressor and poststressor in 212 infants during a laboratory visit. Major depression and CD were measured with the computerized National Institute of Mental Health Diagnostic Interview Schedule (NIMH-DIS), postpartum depressive mood was measured with the Edinburgh Postnatal Depression Scale, and overcontrol was observed with the CARE-Index. RESULTS Independent of the predictors, there was a dampened cortisol response. Infants of mothers with lifetime MD and of average to highly overcontrolling mothers showed increased cortisol reactivity. Conduct disorder and cortisol levels were not associated. CONCLUSIONS Future studies should detect whether the absence of a dampened cortisol response in infants whose mothers have lifetime MD or display overcontrolling parenting is stable over time.

Cortisol Levels and Conduct Disorder in Adolescent Mothers.

OBJECTIVE To examine the association between cortisol levels and conduct disorder (CD) in adolescent mothers. Past research has shown that low levels of cortisol were associated with CD, particularly with its aggressive symptoms. The authors tested the hypothesis that adolescent mothers with CD would show lower levels of salivary cortisol compared to mothers without CD at 4 and 9 months postpartum. METHOD Midmorning salivary cortisol levels were measured in 228 adolescent mothers (age at delivery 16.9 +/- 1 years [mean +/- SD]) during a laboratory visit at 4 and 9 months postpartum. CD was diagnosed during pregnancy according to the CD subsection on the criteria for antisocial personality disorder (DSM-III-R). RESULTS Results did not confirm the hypothesis. Lower cortisol levels were not significantly associated with a CD diagnosis, the number of CD symptoms, or aggressive symptoms. CONCLUSIONS Despite valid measures and strong statistical power, this study failed to find an association between cortisol levels and CD in a sample of adolescent mothers. The results may have been influenced by the fact that participants were 4 and 9 months postpartum and by comparisons of mothers with CD to mothers living in stressful circumstances.

Approaches to salivary cortisol collection and analysis in infants.

Salivary cortisol is becoming more commonly utilized as a biologic marker of stress in observational studies and intervention research. However, its use with infants (12 months of age or younger) is less widespread and poses some special challenges to researchers. In order to decide on the most suitable collection procedure for salivary cortisol in infants, a number of criteria should be considered. This article will aid investigators interested in integrating salivary cortisol measurement into their research studies by presenting (1) an overview of the patterns of cortisol secretion in infancy including the development of diurnal rhythm and response to stress; (2) a comparison of the most commonly used approaches for collecting salivary cortisol samples in infants including cotton rope, syringe aspiration technique, filter paper, hydrocellulose microsponge, and the Salimetrics children’s swab; (3) a discussion of the factors contributing to heightened cortisol variability in infancy and how these can be limited; (4) analytical issues associated with cortisol measurement; and (5) examples of criteria to consider when choosing a saliva sampling method and lab for conducting assays.

Listening to the heart-brain talk: persistent depressive symptoms are associated with hsCRP in apparently healthy individuals at high risk for coronary artery disease.

Background: This study examined whether mild-to-moderate depressive symptoms are associated with increased high-sensitivity C-reactive protein (hsCRP) and interleukin 6 (IL-6) levels in apparently healthy individuals at high risk for coronary artery disease. We investigated in individuals whether: (1) current depressive symptoms were associated with increased hsCRP and IL-6 levels; (2) persistent depressive symptoms at two time points 6 months apart were associated with hsCRP and IL-6; and (3), sex-based differences in inflammation were a function of depressive symptoms. Methods: We measured depressive symptoms (twice), hsCRP, and IL-6 (follow-up time point) in 84 apparently healthy individuals (52% women) at high cardiac risk. Results: Patients with persistent depressive symptoms had higher hsCRP, compared to participants without persistent symptoms (5.55 vs. 1.70 mg/l, p < 0.05, 95% CI 0.11 to 1.09, d = 0.67). Participants with current depressive symptoms had higher hsCRP (3.99 vs. 1.70 mg/l, p = 0.059) than those without symptoms. Findings remained unchanged after controlling for covariates. Women had higher adjusted hsCRP than men (2.91 vs. 1.87 mg/l, p < 0.001). When we entered depressive symptoms, the model remained significant, with a significant interaction between sex and symptoms: women with depressive symptoms had higher hsCRP than men with depressive symptoms and than women without symptoms (6.75 vs. 1.11 mg/l). The hypothesized differences were not observed with respect to IL-6, after controlling for body mass index (95% CI−0.77 to 0.73). Conclusions: Before a first ischaemic coronary event, persistent mild-to-moderate depressive symptoms were associated with increased hsCRP. Women with depressive symptoms had higher hsCRP than men with symptoms.

Maternal prenatal state anxiety symptoms and birth weight: A pilot study

Many women suffer from new or worsening anxiety during pregnancy. In this pilot study, we investigated the effect of timing and severity of prenatal state anxiety symptoms on reduced birth weight. We hypothesized that: (1) Women with state anxiety symptoms during mid-gestation would deliver newborns with lower birth weight in comparison to participants with symptoms in early gestation and (2) compared to women with lower anxiety symptoms (< 50th percentile), women with medium-to-high state anxiety symptoms (> 50th percentile) would have lower birth weight offspring. The sample consisted of the first 30 pregnant women who agreed to participate in this pilot study. We assessed anxiety symptoms, using the State-Trait Anxiety Inventory during early and mid-gestation. We obtained birth weight from clinical charts. A hierarchical multiple regression showed that, after controlling for covariates, state anxiety symptoms in mid-gestation were associated with lower infant birth weight [F(9, 7) = 20.30, p<.001]. However, birth weight did not differ as a function of the severity of maternal state anxiety [F(1, 23)=.14, p=.71 and F(1, 24)=1.76, p=.20., respectively]. Clearly, our pilot data need replication. Once statistical significance is established with larger samples, it will be informative to examine the clinical significance of those findings.

Prenatal tobacco exposure and cortisol levels in infants of teen mothers

Abstract Aims: Prenatal tobacco exposure (PTE) is an important public health concern for the offspring of teen mothers. We examined whether PTE is associated with baseline cortisol levels in four-month-old infants of teenage mothers. Methods: We assessed salivary cortisol levels of 212 infants. PTE was measured by using self-reports of cigarette smoking during pregnancy. We used a propensity scores matching analysis to compare infants with PTE and those without. Results: Of 212 mothers, 151 smoked during pregnancy. However, there was no association between PTE and infant cortisol levels. Conclusions: We could not support a relation between PTE and cortisol levels in a sample of four-month-old infants of teenage mothers.

Paediatric patient navigation models of care in Canada: An environmental scan

Objectives (1) To provide other organizations with useful information when implementing paediatric navigation programs and (2) to inform the implementation of a navigation care centre in New Brunswick for children with complex health conditions. Methods This environmental scan consisted of a literature review of published and grey literature for paediatric patient navigation programs across Canada. Additional programs were found following discussions with program coordinators and navigators. Interviews were conducted with key staff from each program and included questions related to patient condition; target population and location; method delivery; navigator background; and navigator roles. Data analysis included analysis of interviews and identification of common themes across the different programs. Results We interviewed staff from 19 paediatric navigation programs across Canada. Programs varied across a number of different themes, including: condition and disease type, program location (e.g., hospital or clinic), navigator background (e.g., registered nurse or peer/lay navigator) and method of delivery (e.g., phone or face-to-face). Overall, navigator roles are similar across all programs, including advocacy, education, support and assistance in accessing resources from both within and outside the health care system. Discussion This scan offers a road map of Canadian paediatric navigation programs. Knowledge learned from this scan will inform stakeholders who are either involved in the delivery of paediatric patient navigation programs or planning to implement such a program. Specifically, our scan informed the development of a navigation centre for children with complex health conditions in New Brunswick.

A Mixed-Methods Quick Strike Research Protocol to Learn About Children With Complex Health Conditions and Their Families:

Advances have been made to improve health care for children with complex health conditions (CCHCs); however, little is known of the needs of these children and their families in the Canadian context. In this article, we describe our Canadian Institutes of Health Research funded Quick Strike protocol, a mixed-methods multisite research project that explored CCHC and their families in two Canadian provinces. The aims were (a) to describe and define CCHC, (b) to understand the needs of CCHC and their families, (c) to identify gaps and barriers to services for this population, and (d) to adapt and test the application of a computerized algorithm to yield information on CCHC. The mixed-methods design was comprised of four components: three qualitative and one quantitative. We describe the components of this project and outline the methods and procedures of data collection and analysis for each component. One of the main sources of data was interviews from 121 stakeholders, which included CCHC and family members, as well as health, social, and education professionals. This Quick Strike project was designed to engage stakeholders and the public with integrated knowledge translation threaded as a core element throughout the research process. Multiple strategies were used to validate and disseminate early findings from the research. As we outline in this article, this research project provided the foundation for one innovative service model of care, NaviCare/SoinsNavi, and spawned a number of additional outcomes such as a secondary analysis of the data to describe interprofessional collaboration for CCHC.

A Comparative Study of Parental Sensitivity Between Three Groups of Adolescent Mothers

ABSTRACT Given the central role that parental sensitivity may potentially play in the intergenerational transmission of social maladjustment, intervention regarding the parental sensitivity of mothers with social adaptation difficulties is vital. Our aim was to compare the parental sensitivity of 33 adolescent mothers in group homes with that of a school group of 63 adolescent mothers divided into two subgroups according to the presence or absence of a conduct disorder diagnosis. Our results revealed that the proportion of sensitive mothers was greater among the adolescents living in group homes (29%) than among the group of adolescent mothers with a conduct disorder diagnosis who did not live in group homes during the first four months of their childrens lives (7%). In particular, we found a smaller proportion of unresponsive mothers in the first group than in the second. The lack of difference among the groups with regards to the numbers of controlling mothers may be explained by the greater difficulty experienced for group home staff members in detecting overly controlling behavior in mothers and taking appropriate action to avoid any risk of physical abuse of children.