Prenatal air pollution exposure is associated with inflammatory, cardiovascular, and metabolic biomarkers in mothers and newborns

BACKGROUND

Prenatal air pollution exposure has been associated with individual inflammatory, cardiovascular, and metabolic biomarkers in mothers and neonates. However, studies of air pollution and a comprehensive panel of biomarkers across maternal and cord blood samples remain limited. Few studies used data-driven methods to identify biomarker groupings that converge biomarkers from multiple biological pathways. This study aims to investigate the impacts of prenatal air pollution on groups of biomarkers in maternal and cord blood samples.

METHODS

In the Maternal And Developmental Risks from Environmental and Social Stressors (MADRES) cohort, 87 biomarkers were quantified from 45 trimester 1 maternal blood and 55 cord blood samples. Pregnancy and trimester 1-averaged concentrations of particulate matter ≤2.5 μm and ≤10 μm in diameter (PM2.5 and PM10), nitrogen dioxide (NO2), and ozone (O3) were estimated, using inverse distance squared weighted spatial interpolation from regulatory air monitoring stations. Traffic-related NOx was assessed using California Line Source Dispersion Model: freeway/highway roads, non-freeway major roads, non-freeway minor roads, and their sum as total NOx. Elastic Net (EN) regression within the rexposome R package was used to group biomarkers and assess their associations with air pollution.

RESULTS

In maternal samples, trimester 1-averaged PM10 was associated with elevated inflammation biomarkers and lowered cardiovascular biomarkers. NO2 exhibited positive associations with cardiovascular and inflammation markers. O3 was inversely associated with inflammation, metabolic, and cardiovascular biomarkers. In cord blood, pregnancy-averaged PM2.5 was associated with higher cardiovascular biomarkers and lower metabolic biomarkers. PM10 was associated with lower inflammation and higher cardiovascular biomarkers. Total and major road NOx was associated with lower cardiovascular biomarkers.

CONCLUSION

Prenatal air pollution exposure was associated with changes in biomarkers related to inflammation, cardiovascular, metabolic, cancer, and neurological function in both mothers and neonates. This study shed light on mechanisms by which air pollution can influence biological function during pregnancy.

Effect of parental adverse childhood experiences on intergenerational DNA methylation signatures from peripheral blood mononuclear cells and buccal mucosa

In this study, the effect of cumulative ACEs experienced on human maternal DNA methylation (DNAm) was estimated while accounting for interaction with domains of ACEs in prenatal peripheral blood mononuclear cell samples from the Maternal and Developmental Risks from Environmental Stressors (MADRES) pregnancy cohort. The intergenerational transmission of ACE-associated DNAm was also explored used paired maternal (N = 120) and neonatal cord blood (N = 69) samples. Replication in buccal samples was explored in the Children's Health Study (CHS) among adult parental (N = 31) and pediatric (N = 114) samples. We used a four-level categorical indicator variable for ACEs exposure: none (0 ACEs), low (1-3 ACEs), moderate (4-6 ACEs), and high (>6 ACEs). Effects of ACEs on maternal DNAm (N = 240) were estimated using linear models. To evaluate evidence for intergenerational transmission, mediation analysis (N = 60 mother-child pairs) was used. Analysis of maternal samples displayed some shared but mostly distinct effects of ACEs on DNAm across low, moderate, and high ACEs categories. CLCN7 and PTPRN2 was associated with maternal DNAm in the low ACE group and this association replicated in the CHS. CLCN7 was also nominally significant in the gene expression correlation analysis among maternal profiles (N = 35), along with 11 other genes. ACE-associated methylation was observed in maternal and neonatal profiles in the COMT promoter region, with some evidence of mediation by maternal COMT methylation. Specific genomic loci exhibited mutually exclusive maternal ACE effects on DNAm in either maternal or neonatal population. There is some evidence for an intergenerational effect of ACEs, supported by shared DNAm signatures in the COMT gene across maternal-neonatal paired samples.

Effect of Parental Adverse Childhood Experiences on Intergenerational DNA Methylation Signatures

Adverse Childhood Experiences (ACEs) are events that occur before a child turns 18 years old that may cause trauma. In this study, the effect of cumulative ACEs experienced on human maternal DNA methylation (DNAm) was estimated while accounting for interaction with domains of ACEs in prenatal peripheral blood mononuclear cell samples from the Maternal and Developmental Risks from Environmental Stressors (MADRES) pregnancy cohort. The intergenerational transmission of ACE-associated DNAm was also explored used paired maternal and neonatal cord blood samples. Replication in buccal samples was explored in the Children's Health Study (CHS). We used a four-level categorical indicator variable for ACEs exposure: none (0 ACEs), low (1-3 ACEs), moderate (4-6 ACEs), and high (> 6 ACEs). Effects of ACEs on maternal DNAm (N = 240) were estimated using linear models. To evaluate evidence for intergenerational transmission, mediation analysis was used. Analysis of maternal samples displayed some shared but mostly distinct effects of ACEs on DNAm across low, moderate, and high ACEs categories. CLCN7 and PTPRN2 was associated with maternal DNAm in the low ACE group and this association replicated in the CHS. ACE-associated methylation was observed in maternal and neonatal profiles in the COMT promoter region, with some evidence of mediation by maternal COMT methylation. Specific genomic loci exhibited mutually exclusive maternal ACE effects on DNAm in either maternal or neonatal population. There is some evidence for an intergenerational effect of ACEs, supported by shared DNAm signatures in the COMT gene across maternal-neonatal paired samples.

Person-centred care in complementary medicine for individuals with chronic conditions in Australia

Background

Increasing chronic condition diagnoses burden public health systems, individuals and communities. The duration and complexity of chronic conditions require ongoing, multifaceted care - such as person-centred care (PCC) - to address the individual needs and quality of life for patients. Many patients with chronic conditions seek additional care outside mainstream medicine, often consulting complementary medicine (CM) practitioners. This study examines the extent of PCC being experienced by patients with chronic conditions who consult CM practitioners.

Methods

Cross-sectional survey (n = 191), conducted nationally, November 2018 to March 2019, in clinics of the five CM professions most commonly consulted by individuals with chronic conditions in Australia (massage, chiropractic, osteopathy, acupuncture, naturopathy). Participants with chronic conditions (n = 153) were surveyed about experiences of PCC during CM consultation, and regarding consultation with medical doctors, using four validated measures.

Results

During consultation with CM practitioners, patient perceptions of PCC were consistently high. Ratings of PCC were consistently higher for consultations with any CM practitioners (summary mean 3.33) than consultations with medical doctors (summary mean 2.95). The highest mean scores for PCC were reported by patients of naturopaths (summary mean 4.04). Variations in perceived PCC for different items between professions indicate nuance in the experience of consultation across different CM professions.

Conclusions

This study indicates PCC is characteristic of CM consultation, which may reflect CM philosophies such as holism. CM practitioners may present an existing resource of PCC. Further attention should be given to CM professions regarding the potential to address unmet needs of individuals with chronic conditions, and subsequently to better manage the public health burden associated with chronic conditions.

Key messages

Person-centred care appears to be a consistent characteristic of complementary medicine clinical care for individuals with chronic conditions. Due to rising rates of chronic conditions and the associated burden on public health systems, complementary medicine professions should be considered as a resource to optimise chronic illness care.

Characteristics of patients visiting naturopathic practitioners for maternal and reproductive health

Background

Naturopathy, recognised by the World Health Organisation as a European traditional medicine system, is practiced in every world region. Patients in countries where naturopathy is practiced visit a naturopathic practitioner for a range of health concerns including maternal and reproductive health; recognised as a global health priority area. This study aims to examine the characteristics of patients visiting naturopathic practitioners for their maternal and reproductive health concerns, and the clinical care provided by naturopathic practitioners to those patients.

Methods

An international cross-sectional survey of typical naturopathic practices and their associated patients, conducted in naturopathic clinics in 14 countries and 4 world regions. Naturopathic practitioners(n = 54) were invited to prospectively complete an online survey for up to 20 consecutive cases within the study period. Univariate relationships were examined through chi-square tests. Backwards stepwise logistic regression was employed to explore the characteristics most likely to be associated with individuals visiting a naturopath for maternal and reproductive health.

Results

Naturopathic practitioners provided data for 852 patients, with 43 (5.0%) visiting a naturopath for maternal and reproductive health concerns such as fertility (54.8%), pregnancy (26.2%), preconception health (11.9%), and lactation, breastfeeding or other postnatal care (7.1%). The regression analysis indicates the practitioners are more likely to prescribe acupuncture (OR 2.71, p<.001) and more likely to identify gynecological (OR 4.31, p<.001) or endocrine (OR 3.30, p=.01) systems as important in the management of the health of these patients.

Conclusions

Individuals are accessing naturopathic practitioners for maternal and reproductive health. An examination of the motivations influencing this population to access naturopathic care and the outcomes of this care is urgently needed.

Key messages

Naturopathic practitioners throughout the world are being visited for assistance with maternal and reproductive health issues including fertility, pregnancy, preconception and postnatal care. Naturopathic practitioners are prescribing acupuncture, as well as a wide range of other treatments, for maternal and reproductive health issues.

Disclosure of complementary medicine use to medical providers: a systematic review and meta-analysis

Concomitant complementary medicine (CM) and conventional medicine use is frequent and carries potential risks. Yet, CM users frequently neglect to disclose CM use to medical providers. Our systematic review examines rates of and reasons for CM use disclosure to medical providers. Observational studies published 2003-2016 were searched (AMED, CINAHL, MEDLINE, PsycINFO). Eighty-six papers reporting disclosure rates and/or reasons for disclosure/non-disclosure of CM use to medical providers were reviewed. Fourteen were selected for meta-analysis of disclosure rates of biologically-based CM. Overall disclosure rates varied (7-80%). Meta-analysis revealed a 33% disclosure rate (95%CI: 24% to 43%) for biologically-based CM. Reasons for non-disclosure included lack of inquiry from medical providers, fear of provider disapproval, perception of disclosure as unimportant, belief providers lacked CM knowledge, lacking time, and belief CM was safe. Reasons for disclosure included inquiry from medical providers, belief providers would support CM use, belief disclosure was important for safety, and belief providers would give advice about CM. Disclosure appears to be influenced by the nature of patient-provider communication. However, inconsistent definitions of CM and lack of a standard measure for disclosure created substantial heterogeneity between studies. Disclosure of CM use to medical providers must be encouraged for safe, effective patient care.

Needs of older caregivers of patients with advanced cancer

OBJECTIVES

To determine whether age or stage of cancer can be used to identify caregivers at high risk for excessive burden or distress.

DESIGN

Descriptive data collected as part of a psychosocial research registry, comparing younger caregivers with older and caregivers of early-stage patients with those of later stage.

PARTICIPANTS

Caregivers of newly diagnosed adult cancer patients.

MEASUREMENTS

Caregiver Reaction Assessment (CRA), the Profile of Mood States (POMS), single-item indicators from the Patient Reported Outcome Measurement Information System set, and the Medical Outcomes Study Social Support (MOS-SS) Scale. Patient information was obtained from the medical record.

RESULTS

Younger caregivers and caregivers of patients with Stage I and II cancer identified a greater lack of family support than older caregivers and caregivers of patients with Stage III and IV cancer. Significant regression models were found for three CRA subscales (Disrupted Schedule, Lack of Family Support, and Health Problems), as well as for the POMS depression and fatigue scales. Caregiver social support (MOS-SS) made the only significant contribution to the models. There were significant differences between caregivers with high and low levels of social support on almost all measures of well-being.

CONCLUSION

Incorporating formal assessment of social support may be useful in identifying at-risk caregivers. In addition, there is a need to further investigate which dimensions of social support are most strongly related to measures of well-being.

Psychosocial registry for persons with cancer: a method of facilitating quality of life and symptom research

Research focused on the psychosocial aspects of the experience of persons with cancer and their family caregivers is hampered by the methodological challenges inherent in quality of life research. A data registry offers a potential solution to many of these problems in providing a large, comprehensive database, using standardized instruments. We report here our preliminary experience with establishing a Psychosocial Registry designed to advance research in the psychological, social, and spiritual aspects of quality of life of newly diagnosed cancer patients and their family caregivers. The first six months of enrollment demonstrated that the majority of newly diagnosed patients approached for consent (68%) and their primary family caregiver (92%) were willing to participate in the registry; of these, 80% also agreed to be contacted in the future for additional studies. Face-to-face interview was the preferred method of data collection. Our preliminary experience suggests that continuation of the registry with the current modest level of resources would generate a sample of approximately 1000 patients in three years. The long-range goal is to establish a national psychosocial data registry that will enroll patients at diagnosis and follow them through the entire cancer experience, including end of life or survivorship.

Small terminal deletions of the long arm of chromosome 2: two new cases

We report on 2 girls with small de novo terminal deletions of the long arm of chromosome 2 and breakpoints within q37. Four cases with similar or more extensive deletions have been previously reported in full. Hypotonia and psychomotor retardation were the only manifestations common to all 6 cases. The phenotype associated with small terminal 2q deletions is variable and clearly not always as mild as indicated in previous reports. The abnormality may also be more common than has been assumed.

Metabolic activity of erosions in rheumatoid arthritis

The hands of 10 patients with rheumatoid arthritis were investigated with diphosphonate scanning and radiology. Increased uptake of isotope can be associated with some erosions but not all and also reflects other processes more linked to acute inflammatory areas unassociated with the development of erosions. If the latter are the hallmark of active rheumatoid arthritis then bone scans are not.

Evaluation of the cognitive component of political issues by use of classical conditioning

The direct use of verbal and physiological response measures to assess the cognitive component of a sociopolitical attitude is made difficult by the multiple meanings of sociopolitical stimuli. In the present study a modified differential classical conditioning procedure was used to produce an unambiguous physiological (skin conductance) response to stimuli related to a discrete social concept (black relatedness and not black relatedness). It was demonstrated that conditioned stimuli clearly related to this specific concept produced a conditioned response. The results also showed that a series of more ambiguous test stimuli related to the 1972-1974 election campaigns produced a gradient of skin conductance responses that was related to the degree of black relatedness or not black relatedness of each stimulus as measured by other means. The implications of the results of this study to further research and other indicators of the cognitive component of attitude are discussed.

Evaluation of the cognitive component of political issues by use of classical conditioning

The direct use of verbal and physiological response measures to assess the cognitive component of a sociopolitical attitude is made difficult by the multiple meanings of sociopolitical stimuli. In the present study a modified differential classical conditioning procedure was used to produce an unambiguous physiological (skin conductance) response to stimuli related to a discrete social concept (black relatedness and not black relatedness). It was demonstrated that conditioned stimuli clearly related to this specific concept produced a conditioned response. The results also showed that a series of more ambiguous test stimuli related to the 1972-1974 election campaigns produced a gradient of skin conductance responses that was related to the degree of black relatedness or not black relatedness of each stimulus as measured by other means. The implications of the results of this study to further research and other indicators of the cognitive component of attitude are discussed.