Effects of the glucocorticoid receptor gene (NR3C1) and subjective birth experience on the risk of postpartum depression and maternal bonding

Postpartum depression (PPD) is a serious health care issue that affects a substantial share of women giving birth. PPD is considered a severe stress response that is likely associated with impaired HPA-axis activity. However, genetic findings regarding HPA-axis effects on PPD are scarce and inconsistent. Inconsistencies may be due to the neglect of environmental (stressful) events such as perinatal trauma or averse subjective birth experiences associated with PPD. Therefore, the present study aims to investigate whether the NR3C1 gene and subjective birth experience interact on PPD and postpartum bonding to the child. N = 277 mothers provided gene samples and self-report data on PPD and postpartum bonding. We genotyped 11 polymorphisms on the NR3C1 gene (including the prominent BCL1) and conducted haplotype analyses. A negative subjective birth experience was associated with both PPD and maternal postpartum bonding. Our results further show a significant main effect of NR3C1 haplotype (F_{1, 275} = 6.42, p = .012, η² =.023) and a haplotype x birth experience interaction (F_{1, 274} = 4.57, p = .033, η² =.016) on PPD. We did not find any NR3C1 haplotype effects on bonding. Our results support the assumption that the glucocorticoid receptor coding NR3C1 gene is involved in the development of PPD. These gene effects become particularly important in presence of a negative environmental event such as the subjective birth experience. This finding allows more targeted preventions in terms of being particularly sensitive to potentially harming environmental influences that may present even stronger risk factors for genetically vulnerable women.

Mental and physical support (MAPS) for moms: preliminary findings from a prenatal health support program

BACKGROUND

The low incidence of exercise during pregnancy and the high rates of prenatal depression indicate more opportunities are needed for mothers to engage in exercise and obtain health-related support and education. MAPS (mental & physical support) was developed to support mothers' psychological and physical health during pregnancy. MAPS consisted of physical activity classes 2×/week followed by either a speaker or group discussion regarding a parenting or health-related topic. The primary purpose of this study was to determine if the format was feasible prior to developing a main scale randomized trial.

METHODS

Program measurements included a pre/post survey, post-program focus group, attendance logs and scales for exercise, self-efficacy, and social support.

RESULTS

Findings indicated the program format is well-received by participants; however, issues in attendance warrant program format alterations. Further, larger scale studies and the addition of a control group are needed.

CONCLUSION

This format offers practitioners an effective strategy for supporting pregnant women's physical and psychological health.

Exploring Healthy Eating and Exercise Behaviors Among Low-Income Breastfeeding Mothers

BACKGROUND:

Postpartum weight retention is often a significant contributor to overweight and obesity. Lactation is typically not sufficient for mothers to return to pre-pregnancy weight. Modifiable health behaviors (e.g., healthy eating and exercise) are important for postpartum weight loss; however, engagement among mothers, especially those who are resource-limited, is low. A deeper understanding of low-income breastfeeding mothers' healthy-eating and exercise experience, a population that may have unique motivators for health-behavior change, may facilitate creation of effective intervention strategies for these women.

RESEARCH AIM:

To describe the healthy-eating and exercise experiences of low-income postpartum women who choose to breastfeed.

METHODS:

Focus group discussions were conducted with low-income mothers ( N = 21) who breastfed and had a child who was 3 years old or younger. Transcript analysis employed integrated grounded analysis using both a priori codes informed by the theory of planned behavior and grounded codes.

RESULTS:

Three major themes were identified from five focus groups: (a) Mothers were unable to focus on their own diet and exercise due to preoccupation with infant needs and more perceived barriers than facilitators; (b) mothers became motivated to eat healthfully if it benefited the infant; and (c) mothers did not seek out information on maternal nutrition or exercise but used the Internet for infant-health information and health professionals for breastfeeding information.

CONCLUSION:

Low-income breastfeeding mothers may be more receptive to nutrition education or interventions that focus on the mother-infant dyad rather than solely on maternal health.

A cross sectional study investigating weight management motivations, methods and perceived healthy eating and physical activity influences in women up to five years following childbirth

OBJECTIVE

to explore motivations for weight change, weight loss methods used and factors perceived to influence healthy eating and physical activity for weight management following childbirth, and to evaluate differences by socio-demographic, weight status and pregnancy characteristics.

DESIGN

cross-sectional online survey completed from May to August 2013.

PARTICIPANTS

Australian women (n=874, aged 32.8±4.5 years, pre-pregnancy Body Mass Index 25.6±5.7kg/m²) aged 18-40 years who had given birth in the previous 5 years MEASUREMENTS: women self-reported socio-demographic, weight status and pregnancy characteristics. Those who reported being unhappy at their current weight ranked their most to least important reasons for wanting to change their weight from a list of nine options. Weight control methods used in the previous two years were reported from a list of 12 options. Perceived healthy eating and physical activity factors influencing weight management were assessed across 20 items using a five-point Likert scale.

FINDINGS

the most prevalent motivators reported for weight change were to improve health (26.1%) and lift mood (20.3%). Three-quarters (75.7%) of women reported having used at least one weight loss method in the previous two years. Time constraints due to family commitments, enjoyment of physical activity and healthy eating, motivation and cost were factors most commonly reported to influence weight management. Body mass index, parity, education, household income and time since last birth were related to motivations for weight change, weight loss methods used and/or factors perceived to influence weight management.

IMPLICATIONS FOR PRACTICE

weight management support provided by health professionals should consider women's expressed motivators and factors influencing weight management, along with differences in sociodemographic, pregnancy and weight status characteristics, in order to engage women at this life-stage and facilitate adoption of healthy lifestyle behaviours.