A review and novel theoretical model of how negative emotions influence inflammation: The critical role of emotion regulation

Emotion regulation among adults with asthma: Links with short-acting inhaler medication overuse and utilization of acute medical care

OBJECTIVE

Existing research suggests that emotion plays an important role in airway inflammation and asthma symptom control. The objective of this study was to determine whether difficulties regulating emotion were associated with overuse of short-acting inhaled medications and acute medical care usage in adults with asthma.

METHODS

The sample included 401 adults with asthma recruited from an online panel of adults with chronic respiratory disease. Sequential binary logistic regression models were used to examine the associations of emotion regulation with short-acting inhaled medication use and acute medical care use, controlling for patient characteristics and comorbid mental health conditions.

RESULTS

Greater difficulties with emotion regulation were significantly associated with greater odds of short-acting inhaler medication overuse (p < 0.001), emergency department visits (p < 0.001), and hospitalizations (p = 0.001).

CONCLUSIONS

Emotion dysregulation may play an important role in asthma management. Evidence-based interventions to reduce difficulties in emotion regulation may help improve problematic patterns of short-acting medication overuse and acute service use. The current findings should be interpreted in the context of several limitations, including the use of self-report measures. Future research should use electronic medical records or metered dose inhalers to objectively assess short-acting inhaler overuse and acute medical care use.

The association between religious beliefs and values with inflammation among Middle-age and older adults

Objectives: Dimensions of religion and spirituality are associated with better emotional, physical, and cognitive health. However, the underlying physiological mechanisms are not well known. We investigated the relationship between dimensions of religion and spirituality with levels of C-reactive protein (CRP), a biomarker of systematic inflammation, in middle-aged and older adults in the United States.Methods: In this descriptive longitudinal study using secondary data, we used proportional odds models of the generalized estimating equation (GEE) to assess the association between religious beliefs and values and religious service attendance with CRP levels from respondents (n = 2,385) aged 50 years and older in the Health and Retirement Study from 2006 to 2014.Results: Middle-aged to older adults who reported higher religious beliefs and values had lower levels of CRP, controlling for age, sex, education, marital status, race, household income, and health, such as hypertension, diabetes, cancer, and body mass index (BMI).Conclusion: Religious beliefs and values are associated with lower CRP levels among middle-aged and older adults in the U.S. This study adds to the understanding of biological processes underlying the relationship between dimensions of religion and spirituality with better cognitive and physical health, potentially through inflammation.

Szabo Y. Childhood Adversity and Adult Inflammation: Exploring the Mediating Role of Emotion Regulation in the MIDUS II Study

The present study furthers understanding of how childhood adversity connects to inflammation and, in turn, poor health. Using the publicly available Midlife in the United States II (MIDUS II) dataset, we test a recent theoretical model that suggests emotion regulation is a potential mechanism of associations between adversity and inflammation. We examined the indirect effects of various types of adversity (e.g., stressful events, maltreatment, threat, and deprivation) on inflammation via two emotion regulation strategies (i.e., expressive suppression and reappraisal). Participants included 1096 adults without a history of cancer or HIV/AIDS who had completed the initial MIDUS II follow up and a sub-study examining biomarkers. Participants completed self-report measures inquiring about psychosocial factors including stressful life events, childhood trauma, and emotion regulation as well as provided blood samples. Bivariate correlation indicated that multiple forms of childhood adversity were associated with both C-reactive protein and fibrinogen. Deprivation, as measured by a stressful life events scale, was positively associated with both reappraisal and suppression. Tests of indirect effects indicated that deprivation was positively associated with fibrinogen through both emotion regulation strategies, particularly for female participants. Our findings partially support recent theory positing emotion regulation as a pathway through which childhood adversity may impact inflammation in adulthood. Further, deprivation may be particularly critical in understanding how adversity is connected to maladaptive emotion regulation and inflammation. Emotion regulation may be an important treatment target to mitigate the negative impact of childhood adversity on health and well-being.

Supplementary Information

The online version contains supplementary material available at 10.1007/s40653-023-00594-2.

Children's empathy moderates the association between perceived interparental conflict and child health

Interparental conflict is known to negatively impact child well-being, including behavioral and physiological well-being. Children's empathy - that is, vicariously experiencing others' emotions - may increase children's sensitivity to and the biological repercussions of interparental conflict. Although empathy represents a valued trait and is an important part of socioemotional development, its influence on children's physical health is unknown. This study examined whether empathy moderates the association between perceived interparental conflict and both child systemic inflammation and parent-rated overall child health in a sample of children between the ages of seven to nine. Children and their parents participating in the long-term evaluation of the Family Foundations program, a randomized trial of a perinatal preventative intervention, provided data approximately eight years following enrollment into the program. We collected peripheral blood samples via dried blood spots, anthropometric measurements, and child and parent psychosocial questionnaires. Results indicated significant positive main effects of child empathy on both C-reactive protein (CRP; B = 0.26, SE = 0.11, p =.026) and Interleukin-6 (IL-6; B = 0.20, SE = 0.10, p =.045) levels. Further, child affective empathy moderated the associations between perceived interparental conflict and both CRP (B = 0.39, SE = 0.19, p =.050) and parent-reported child health (B = 0.30, SE = 0.13, p =.021), such that greater empathy strengthened the negative associations between interparental conflict and child health. Overall, findings suggests that there may be a biological cost of being more empathic in high-conflict environments and highlight the need for tools to help more empathic children appropriately manage vicarious emotions.

Short-term Psychodynamic Psychotherapy in Addition to Standard Medical Therapy Increases Clinical Remission in Adolescents and Young Adults with Inflammatory Bowel Disease: a Randomised Controlled Trial

BACKGROUND

Inflammatory bowel diseases [IBD] are chronic and pervasive conditions of the gastrointestinal tract with a rising incidence in paediatric and young adult populations. Evidence suggests that psychological disorders might be associated with relapse of disease activity. This study aims to evaluate the efficacy of short-term psychodynamic psychotherapy [STPP] in addition to standard medical therapy [SMT] in maintaining clinical remission in adolescents and young adults [AYA] with quiescent IBD, compared with SMT alone.

METHODS

A two-arm, single-centre, randomised, controlled trial was conducted in 60 IBD AYA in clinical remission. Patients were randomised to receive an 8-week STPP + SMT [n = 30] or SMT alone [n = 30]. The primary outcome was the steroid-free remission rate at 52 weeks after treatment. Secondary outcomes included the overall hospitalisation rate within 52 weeks after treatment, and medication adherence obtained from patient's electronic medical records.

RESULTS

Intention-to-treat analysis showed significant improvement in maintaining disease remission rates in the 8-week STPP + SMT group compared with the control one. The proportion of patients maintaining steroid-free remission at 52 weeks was higher in patients in STTP group [93.1%] compared with patients randomised to control group [64.3%; p = 0.01]. There were no significant differences in secondary outcomes, except for depression reduction in STPP + SMT group.

CONCLUSIONS

An 8-week STPP intervention in addition to SMT effectively increases the steroid-free remission rates in AYA with quiescent IBD. Results do not support effects for other secondary outcomes, except for depression reduction.

Emotion regulation shows an age- and sex-specific moderating effect on the relationship between chronic stress and cognitive performance

Despite the extensive knowledge about the effects of chronic stress on cognition, the underlying mechanisms remain unclear. We conducted a cross-sectional moderation analysis on a population-based sample of 596 adults to examine the age- and sex-specific role of emotion regulation (ER) in the relationship between chronic stress and cognitive performance using validated self-report questionnaires. While women showed no direct or moderated relationship between stress and cognition, men displayed a distinct age-related pattern where stress was negatively associated with poorer cognitive performance at older ages, and the onset of this relationship was detected earlier in men with ER problems. These results showed that suppression of emotions and lack of executive control of ER amplify the negative consequences of chronic stress and suggest that there are sex-specific differences in the decline of ability to cope with long-term exposure to stressors.

Inflammation and emotion regulation: a narrative review of evidence and mechanisms in emotion dysregulation disorders

Emotion dysregulation (ED) describes a difficulty with the modulation of which emotions are felt, as well as when and how these emotions are experienced or expressed. It is a focal overarching symptom in many severe and prevalent neuropsychiatric diseases, including bipolar disorders (BD), attention deficit/hyperactivity disorder (ADHD), and borderline personality disorder (BPD). In all these disorders, ED can manifest through symptoms of depression, anxiety, or affective lability. Considering the many symptomatic similarities between BD, ADHD, and BPD, a transdiagnostic approach is a promising lens of investigation. Mounting evidence supports the role of peripheral inflammatory markers and stress in the multifactorial aetiology and physiopathology of BD, ADHD, and BPD. Of note, neural circuits that regulate emotions appear particularly vulnerable to inflammatory insults and peripheral inflammation, which can impact the neuroimmune milieu of the central nervous system. Thus far, few studies have examined the link between ED and inflammation in BD, ADHD, and BPD. To our knowledge, no specific work has provided a critical comparison of the results from these disorders. To fill this gap in the literature, we review the known associations and mechanisms linking ED and inflammation in general, and clinically, in BD, ADHD, and BD. Our narrative review begins with an examination of the routes linking ED and inflammation, followed by a discussion of disorder-specific results accounting for methodological limitations and relevant confounding factors. Finally, we critically discuss both correspondences and discrepancies in the results and comment on potential vulnerability markers and promising therapeutic interventions.

Emotional states predict cellular immune system activity under conditions of life as it is lived: A multivariate time-series analysis approach

The relationship between emotional states and immune system activity is characterized by bidirectional influences; however, limited information is available regarding the temporal dynamics of these effects. The goal of this investigation was to examine how these psychoimmunological interdependencies unfold over time under conditions of "life as it is lived". For this purpose, three healthy women collected their entire urine over a period of approximately two months at 12-h intervals (8 am-8 pm, 8 pm-8 am), resulting in a total of 112 to 126 consecutive measurements per subject. In addition, among other regular psychological assessments, the subjects completed the EWL-60-S, an emotional state questionnaire, each morning and evening. To assess the extent of T-helper type 1 immune activation, the neopterin per creatinine concentration was measured in the urine samples using high-pressure liquid chromatography. The dynamic relationships between the time series of the six emotional states (performance-related activity, general inactivity, extraversion/introversion, general feeling of comfort, emotional irritation, anxiety/depressiveness) and urinary neopterin levels were estimated in vector-autoregressive models and evaluated using Granger-causality tests, impulse-response functions and forecast error variance decompositions. The findings showed that emotional states explained up to 20% of the variance of urinary neopterin per creatinine levels, whereby most of the effects occurred within a period of approximately three days. Across all subjects, increases in anxiety/depressiveness and extraversion led to increases in neopterin levels, while a general feeling of comfort led to decreases in neopterin. These results emphasize the importance of the interdependencies between emotional states and immune system activity and showcase the potential that intensive longitudinal study designs offer for psychoneuroimmunology.

Impact of digital stress on negative emotions and physical complaints in the home office: a follow up study

Background

Due to the COVID-19 pandemic many employees perform under increasingly digital conditions. Enabling home office environments became mandatory for companies wherever possible in consideration of the ongoing pandemic. Simultaneously, studies reported on digital stress. The current literature lacks rigorous research into digital stress on psychosomatic outcomes, emotions, and disease. Therefore, we endeavor to understand how digital stress developed over the course of the pandemic and if it predicts differences in negative emotions and physical complaints in the home office setting.

Methods

To answer the research question, we conducted an online survey among 441 employees in 2020 and 398 employees in 2022 from three municipal administrations in Germany, who were working from home at least occasionally. We used a cluster analysis to detect digitally stressed employees. Regression analyses were performed on digital stress, negative emotions, and physical complaints.

Results

The analysis revealed an increase from 9 to 20% in digital stress, while negative emotions and physical complaints did not show evident differences. In the multivariate model, we observe a change in the proportion of digitally stressed employees between 4 and 17%, while the control variables explain around 9%.

Conclusions

Digital stress did not significantly affect either negative emotions or physical complaints. However, digital stress appeared to exert a more substantial predictive influence on negative emotions. The study emphasizes rising digital stress, which contradicts a positive adaption to the digital working conditions within the observed period. The psychosomatic relations are low or lagged. Further research investigating digital stress and countermeasures, especially to understand how to prevent harmful long-term effects such as distress resulting from working from home conditions, is needed.

Worry and Mindfulness Differentially Impact Symptom Burden Following Treatment Among Breast Cancer Survivors: Findings From a Randomized Crossover Trial

BACKGROUND

Breast cancer survivors often experience many somatic and cognitive side effects resulting from their cancer diagnosis and treatment, including higher rates of pain, fatigue, and memory/concentration problems. Emotion regulation offers opportunities to either enhance or dampen physical health.

PURPOSE

In a secondary analysis of a double-blind randomized controlled trial (RCT) using a typhoid vaccine to assess factors associated with breast cancer survivors' inflammatory responses, we assessed how two specific aspects of emotion regulation, mindfulness, and worry, corresponded to acute changes in focus problems, memory problems, and fatigue along with performance on pain sensitivity and cognitive tasks across two visits among breast cancer survivors.

METHODS

Breast cancer survivors (N = 149) completed two 8.5-hr visits at a clinical research center. Survivors were randomized to either the vaccine/saline placebo or a placebo/vaccine sequence. Worry and mindfulness questionnaires provided data on trait-level emotion regulation abilities. Fatigue, memory problems, and focus difficulties were assessed via Likert scales six times-once before the injections and then every 90 min for 7.5 hr thereafter. Women also completed a pain sensitivity task and several cognitive tasks at each visit.

RESULTS

Findings from this study showed that breast cancer survivors who worried more and were less mindful experienced subjective memory problems, focus problems, and cold pain sensitivity across two visits and irrespective of injection type. Lower mindfulness also corresponded to higher subjective fatigue and hot pain sensitivity and objective ratings. Emotion regulation skills did not predict objective pain sensitivity or cognitive problems.

CONCLUSION

Results from this study highlight the benefits of adaptive emotion regulation in helping mitigate symptoms associated with breast cancer survivorship.

A systematic review of associations between emotion regulation characteristics and inflammation

Elevated inflammation is a risk factor for many psychiatric (e.g., depression) and somatic conditions (e.g., rheumatoid arthritis). Inflammation is influenced by psychosocial processes such as emotion regulation. Characterization of which emotion regulation characteristics impact inflammation could help refine psychosocial interventions aimed at normalizing health-harming inflammatory activity for individuals with psychiatric and somatic illnesses. To investigate this issue, we systematically reviewed the literature on associations between a variety of emotion regulation traits and inflammation. Out of 2816 articles identified, 38 were included in the final review. 28 (74%) found that (a) poor emotion regulation is associated with higher inflammation and/or (b) strong emotion regulation skills are associated with lower inflammation. Consistency of results differed as a function of the emotion regulation construct investigated and methodological characteristics. Results were most consistent for studies testing positive coping/social support seeking or broadly defined emotion regulation/dysregulation. Methodologically, studies testing reactivity to a stressor, adopting a vulnerability-stress framework, or using longitudinal data were most consistent. Implications for integrated, transdiagnostic psychoimmunological theories are discussed, as well as recommendations for clinical research.

Inflammation and emotion regulation: Findings from the MIDUS II study

Emotion regulation (ER) strategies are thought to contribute to mental as well as physical health outcomes. Two common ER strategies include expressive suppression, or inhibition of emotional expression, and cognitive reappraisal, which involves changing how to think about an emotion-eliciting event in order to change its emotional impact. Recent reports have hypothesized that one potential way in which ER may be linked to health outcomes is via the immune system. However, information on this putative link is scarce. The present study aims to explore whether peripheral inflammatory biomarkers are associated with individual differences in ER-strategy use. Participants (n = 117) from the Midlife in the United States II (MIDUS II) study completed the Emotion Regulation Questionnaire (ERQ), and provided a blood sample for immune biomarker extraction including interleukin (IL)-6, IL-8, IL-10, tumor necrosis factor-α (TNF-α), C-reactive protein (CRP), E-selectin, Intercellular Adhesion Molecule-1 (ICAM-1), and fibrinogen. Results showed higher levels of expressive suppression were associated with decreased IL-10, TNF-α, and ICAM-1 levels (controlling for age, sex, BMI, total prescribed medications, and depressive symptoms). Consistent with these findings, hierarchical regression results identified TNF-α as a significant predictor of expressive suppression use. In contrast, no inflammatory markers were associated with predicted use of cognitive reappraisal. Our findings suggest a link between inflammation and specific ER-strategy use. Future research should consider the effects of pro-vs. anti-inflammatory cytokines on adaptive ER and subsequent mental and physical health.

Negative emotions and personal well-being among incarcerated filicide mothers in Rwanda

Despite the tremendous evidence of the harmful effects of maternal filicide on the lives of offenders, there is a scarcity on studies of their negative emotions and personal wellbeing especially in sub-Saharan Africa. Thus, this study was primarily aimed at assessing the prevalence of negative emotions experienced by filicide mothers and how they were associated with personal wellbeing in Rwanda. With an institutional-based cross-sectional study design, we measured the symptoms of anxiety, anger, shame, guilt, depression and personal well-being in a convenient sample of 55 filicidal mothers (mean age = 26.69; SD = 6.88) who were incarcerated in Nyarugenge prison. SPSS (version 24) was used to compute descriptive, Pearson correlation, independent t-test and regression analyses. The results indicated that the rates of shame were (100%), guilt (98.2%), anxiety (92.7%), depression (92.7%), low happiness and satisfaction with life (81.8%), and anger was (76.4%) in the current sample. Based on age category, there was no significant difference in anger scores, depression, guilt, shame and personal well-being scores between young and adult filicide mothers (p>.05). Young filicide mothers (M = 14.55, SD = 4.03), on the other hand, had higher anxiety scores than adult filicide mothers (M = 11.57, SD = 4.72), t = 2.52, p = .015. Finally, anxiety (β = -.507, t = -3.478, p = .001) and age (β = -.335, t = -2.685, p < .001) were negatively associated with personal well-being. The results emerged from this study highlight that filicide mothers experience substantial negative emotions and poor personal wellbeing regardless of their age category. However, poor personal wellbeing was associated with anxiety and age. Based on these results, mental health professionals should examine their mental state with respect to negative emotions and initiate programs that decrease the emotions as well as increase personal well-being.

Editorial commentary on the special issue emerging psychoneuroimmunology research: Future leaders in focus

The theme of this BBI-Health special issue is to promote the research, creativity and forward-thinking of future key opinion leaders in the field of psychoneuroimmunology (PNI). We asked contributing researchers to identify new ideas and spaces for innovation to map out the future trajectory of our discipline. This special issue provides global and diverse views from early career investigators focused on science, society, and/or policy, with an emphasis on diversity in all its aspects. The common thread weaving through the articles contained in this special issue is that all authors were invited to consider the future of PNI while they were experiencing the global COVID-19 lockdowns that slowed down or even prevented them from access to their "hands-on" research. The contributors vary from Master level to assistant professors, and all have already significantly contributed to the field of PNI. Each contributor has provided a photograph and short biography alongside their written perspectives. We hope that you will enjoy learning about their visions for the future of PNI and will join us with enthusiasm as we watch our field grow through the advancement of their scientific careers.