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Background: Older adults often experience an increase in low-grade chronic inflammation. Purpose in life could act as a protective factor as it is associated with beneficial health outcomes. Purpose in life may exert part of its adaptive function by promoting persistence in goal pursuit. During older adulthood, however, when many individuals experience an increase in intractable stressors and declining resources, the adaptive function of purpose could become reduced. Purpose: We examined whether the association between inter- and intra-individual differences in purpose in life and chronic inflammation differed across older adulthood. Method: We assessed four waves of data among 129 older adults (63-91 years old) across 6 years. Results: Hierarchical linear modeling demonstrated that within-person increases in purpose in life predicted reduced levels of chronic inflammation in early old age (25th percentile or 73 years, coefficient  = -.016, p <  .01), but not in advanced old age (75th percentile or 81 years, coefficient  = .002, p = . 67). Between-person differences in purpose were not related to chronic inflammation. Conclusions: These results suggest that greater within-person increases in purpose may protect health processes particularly in early old age but become less effective in advanced old age., Competing Interests: Declaration of Conflicting InterestsThe authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Objective: Although positive marital quality is usually associated with lower chronic low-grade inflammation, not everyone benefits equally from spousal support. Exposure to early life adversity (ELA) has been proposed as a factor that may impede the social buffering effect of positive social relationships. The goal of this study was to test whether ELA would moderate the impact of marital quality on inflammation., Method: This cross-sectional study examined 168 partnered middle-aged women who either were experiencing a current chronic caregiving stressor, raising an adolescent with an autism spectrum disorder or intellectual disability, or who had the normative parenting experience of raising a typically developing adolescent. Participants completed self-report questionnaires on marital satisfaction, dyadic coping, and perceived partner responsiveness to create a composite index of marital quality, and they filled out the Childhood Trauma Questionnaire to assess ELA exposure. Participants also provided plasma samples for the assessment of interleukin-6, tumor necrosis factor-α, and C-reactive protein, three circulating biomarkers of inflammation., Results: ELA moderated the association between marital quality and inflammation. Among individuals who endorsed lower ELA exposure, there was a significant, negative association between marital quality and interleukin-6 and tumor necrosis factor-α levels. However, this association was attenuated and not statistically significant among participants who reported higher ELA exposure. This effect was independent of current chronic stress., Conclusions: These findings suggest that ELA may impair the social buffering effect of marital quality on inflammation. This impaired social buffering effect may be another mechanism through which ELA promotes sustained elevations in inflammation over time. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

The discrete emotion theory of affective aging postulates that anger, but not sadness, becomes increasingly maladaptive during older adulthood in predicting health-relevant physiological processes and chronic disease (Kunzmann & Wrosch, 2018). However, it is largely unknown whether different negative emotions have distinct functional consequences in the development of older adults' physical disease. To start examining this possibility, we investigated whether older adults' daily experiences of anger and sadness were differentially associated with two biomarkers of chronic low-grade inflammation (interleukin-6 [IL-6] and C-reactive protein [CRP]) and the number of chronic illnesses (e.g., heart disease, cancer, etc.). In addition, we examined whether such divergent associations would become paramount in advanced, as compared with early, old age. A community-dwelling study of 226 older adults (age 59 to 93; M = 74.99, SD = 7.70) assessed participants' anger and sadness over 1 week, inflammatory processes, number of chronic illnesses, and relevant covariates. Regression analysis showed that anger predicted higher levels of IL-6 and chronic illness in advanced, but not in early, old age. The age effect of anger on chronic illness was mediated by increased IL-6 levels. Sadness exerted a reversed, but nonsignificant, association with IL-6 and chronic illness, independent of age. No emotion or age effects were obtained for CRP. The study's findings inform theories of health, emotion, and life span development by pointing to the age-related importance of discrete negative emotions in predicting a major physiological pathway to physical health across older adulthood. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Attachment style may influence the acculturation process by shaping the types of social relationships that individuals form and maintain. Social relationship quantity and quality have been linked to chronic low-grade systemic inflammation, an immune process associated with risk for age-related diseases. The goal of this study was to investigate whether attachment style moderates the change in systemic inflammation during the early phases of the acculturation process, a period associated with rapid changes in social functioning. In this 5-month longitudinal study, 58 new international students completed the Adult Attachment Scale and provided blood samples for C-reactive protein (CRP) analysis shortly after arrival in the host country as well as 2 and 5 months later. Results indicated that individuals with higher attachment anxiety experienced larger increases in CRP over time. During a period of rapid changes in social functioning, attachment anxiety promotes immune changes that may increase health risk over time.

Background: Exposure to adverse childhood experiences (ACE) has been associated with elevated circulating inflammatory markers in adulthood. Despite the robust effect of ACE on later health outcomes, not all individuals exposed to ACE suffer from poor health., Purpose: The goal of this study was to evaluate whether current resilience resources may attenuate the impact of ACE on inflammatory markers among individuals with elevated C-reactive protein (CRP) levels., Methods: Participants (N = 174) completed one-time self-report questionnaires assessing ACE exposure within the first 18 years of life and current resilience resources, and provided blood samples for interleukin-6 (IL-6) and CRP., Results: Individuals who were exposed to multiple ACE had greater IL-6 than participants with lesser ACE exposure. However, current resilience resources significantly moderated this effect. Among individuals who reported multiple ACE, higher resilience resources were associated with lower IL-6 levels., Conclusion: These data suggest that resilience resources might attenuate the association between ACE and later health outcomes.

Objective: This study examined the associations between intra-individual variability in, and inter-individual levels of, diurnal cortisol secretion with a marker of low-grade inflammation (i.e., C-Reactive Protein; CRP). Reasoning that greater day-to-day cortisol variability could reflect a dysregulation of the HPA axis, we hypothesized that it would predict higher levels of CRP, above and beyond inter-individual differences in cortisol levels., Methods: A 10-year longitudinal study of 130 older adults examined diurnal cortisol secretion on three different days across each of the 6 waves of data collection and levels of CRP during the last 3 waves. Indicators of mean cortisol levels, short-term cortisol variability, and long-term cortisol variability were analyzed., Results: Hierarchical linear modeling showed significant main effects, linking baseline mean cortisol levels, T-ratio=2.25, p=0.03, and long-term cortisol variability, T-ratio=2.63, p=0.01, with higher CRP values six to ten years after study entry. In addition, a two-way interaction demonstrated that short-term variability in cortisol were associated with higher levels of CRP among individuals who secreted relatively high, T-ratio=2.68, p=0.01, but not low, T-ratio=-1.09, p=0.28, baseline levels of cortisol. Finally, a three-way interaction, T-ratio=2.24, p=0.03, suggested that the effect of long-term cortisol variability on CRP became stronger over time among participants who secreted high average levels of cortisol, whereas it became weaker among their counterparts who secreted low average levels of cortisol., Conclusion: Variability in cortisol secretion across days forecasts low-grade inflammation, and this association is paramount among older adults who secrete high levels of diurnal cortisol., (Copyright © 2016 Elsevier Ltd. All rights reserved.)

Objectives: Acute laboratory stressors elicit elevations in serum levels of interleukin-6 (IL-6) and C-reactive protein (CRP). Chronic stressors, such as family dementia caregiving, promote a state of chronic low-grade elevation in circulating inflammatory markers. The recurrent daily stressors associated with chronic stress may lead to repeated and sustained activation of the physiological stress systems. The present study evaluated the possibility that greater exposure and reactivity to daily stressors fueled increased levels of circulating inflammatory markers among family dementia caregivers, compared with noncaregiving controls., Methods: This cross-sectional study included 53 caregivers and 77 noncaregiving controls. A semistructured interview assessed the occurrence of daily stressors in the past 24 h. A blood sample provided data on two inflammatory markers, C-reactive protein (CRP) and interleukin-6 (IL-6)., Results: Caregivers were more likely to experience multiple stressors in the past 24 h than noncaregiving controls. The occurrence of multiple daily stressors was associated with greater serum IL-6 and CRP levels. The greater occurrence of daily stressors in the past 24 h partially mediated the relationship between dementia caregiving and CRP levels., Conclusion: These results suggest that the cumulative effect of daily stressors promotes elevations in inflammatory markers. Greater exposure to daily stressors may be a psychobiological mechanism leading to elevations in CRP levels among family dementia caregivers.

Objective: To address the question of whether childhood abuse and other adversities have lasting, detectable consequences for inflammation and cell aging late in life, and whether the effects are large enough to be discernible beyond that of a major chronic stressor, dementia family caregiving. Previous research on the physical health consequences of childhood abuse and other adversities has been based on data from young or middle-aged adults., Method: In this community sample of 132 healthy older adults (mean age = 69.70 years; standard deviation = 10.14), including 58 dementia family caregivers and 74 non-caregivers, blood samples were analyzed for interleukin (IL)-6, tumor necrosis factor (TNF)-α, and telomere length, a measure of cell aging. Depressive symptoms were assessed by the Center for Epidemiological Studies Depression Scale., Results: After controlling for age, caregiving status, gender, body mass index, exercise, and sleep, the presence of multiple childhood adversities was related to both heightened IL-6 (0.37 ± 0.03 log10 pg/mL versus 0.44 ± 0.03 log10 pg/mL) and shorter telomeres (6.51 ± 0.17 Kb versus 5.87 ± 0.20 Kb), compared with the absence of adversity; the telomere difference could translate into a 7- to 15-year difference in life span. Abuse was associated with heightened IL-6 and TNF-α levels; for TNF-α, this relationship was magnified in caregivers compared with controls. Moreover, abuse and caregiving status were associated significantly and independently with higher levels of depressive symptoms., Conclusions: Adverse childhood events are related to continued vulnerability among older adults, enhancing the impact of chronic stressors. Childhood adversities cast a very long shadow.

Different aspects of personal relationships including social integration, social support, and social conflict have been related to inflammation. This article summarizes evidence linking the quality and quantity of relationships with gene expression, intracellular signaling mechanisms, and inflammatory biomarkers, and highlights the biological and psychological pathways through which close relationships impact inflammatory responses. Relationship conflict and lower social support can effectively modulate proinflammatory cytokine secretion both directly (via CNS/neural/endocrine/immune biobehavioral pathways), and indirectly, by promoting depression, emotional stress responses, and detrimental health behaviors. Accordingly, thorough assessments of health behaviors and attention to key methodological issues are necessary to identify the contributions of relationships to inflammation, and thus we highlight procedural issues to be considered in the design of studies. Despite some notable methodological challenges, the evidence suggests that learning more about how close relationships influence inflammation will provide important new insights into the ways that relationships impact health.

Caregiving stress increases risk for poor health. The overproduction of inflammatory markers is a core process contributing to this effect. In this study the authors investigated whether formal and informal social support act as protective factors against stress-induced immune dysregulation. Fifty-six parents of children with an autism spectrum disorder completed questionnaires on formal support services, informal social support, self-rated health, and daily somatic symptoms, and they provided a blood sample for analysis of C-reactive protein ( CRP), a biomarker of inflammation. The results indicated that greater informal social support was associated with lower CRP and that a higher number of formal support services received by the family was related to better self-rated health, fewer daily somatic symptoms, and lower CRP. Moreover, the impact of support services on the parents' CRP levels increased with child age. These findings highlight the role of formal and informal support in protecting the health of individuals facing caregiving stress across the life course. [ABSTRACT FROM AUTHOR]

In the past 40 years, a growing body of literature has shown that chronic psychological stress can lead to immune dysregulation. Notably, these stress-induced immune changes are large enough to be clinically relevant. Chronic stress has been associated with a state of chronic low-grade inflammation, delayed wound healing, poor responses to vaccine, and increased susceptibility to infectious illnesses. Activation of neuroendocrine and sympathetic systems provides physiological pathways linking stress and these immune outcomes. Behavioral changes under conditions of chronic stress also contribute to immune dysregulation. Behavioral and pharmacological interventions may attenuate stress-induced immune dysregulation. [ABSTRACT FROM PUBLISHER]

Summary: Animal studies have implicated oxytocin and vasopressin in social bonding, physiological stress responses, and wound healing. In humans, endogenous oxytocin and vasopressin levels covary with perceptions of relationship quality, marital behaviors, and physiological stress responses. To investigate relationships among marital behavior, oxytocin, vasopressin, and wound healing, and to determine the characteristics of individuals with the highest neuropeptide levels, 37 couples were admitted for a 24-h visit in a hospital research unit. After small blister wounds were created on their forearm, couples participated in a structured social support interaction task. Blister sites were monitored daily following discharge to assess wound repair speed. Blood samples were collected for oxytocin, vasopressin, and cytokine analyses. Higher oxytocin levels were associated with more positive communication behaviors during the structured interaction task. Furthermore, individuals in the upper oxytocin quartile healed blister wounds faster than participants in lower oxytocin quartiles. Higher vasopressin levels were related to fewer negative communication behaviors and greater tumor necrosis factor-α production. Moreover, women in the upper vasopressin quartile healed the experimental wounds faster than the remainder of the sample. These data confirm and extend prior evidence implicating oxytocin and vasopressin in couples’ positive and negative communication behaviors, and also provide further evidence of their role in an important health outcome, wound healing. [Copyright &y& Elsevier]

Abstract: Marital stress has been associated with immune dysregulation, including increased production of interleukin-6 (IL-6). Attachment style, one’s expectations about the availability and responsiveness of others in intimate relationships, appears to influence physiological stress reactivity and thus could influence inflammatory responses to marital conflict. Thirty-five couples were invited for two 24-h admissions to a hospital research unit. The first visit included a structured social support interaction, while the second visit comprised the discussion of a marital disagreement. A mixed effect within-subject repeated measure model indicated that attachment avoidance significantly influenced IL-6 production during the conflict visit but not during the social support visit. Individuals with higher attachment avoidance had on average an 11% increase in total IL-6 production during the conflict visit as compared to the social support visit, while individuals with lower attachment avoidance had, on average, a 6% decrease in IL-6 production during the conflict visit as compared to the social support visit. Furthermore, greater attachment avoidance was associated with a higher frequency of negative behaviors and a lower frequency of positive behaviors during the marital interaction, providing a mechanism by which attachment avoidance may influence inflammatory responses to marital conflict. In sum, these results suggest that attachment avoidance modulates marital behavior and stress-induced immune dysregulation. [Copyright &y& Elsevier]

Aging is associated with a natural dysregulation in immune functioning which may be amplified when it occurs in the context of chronic stress. Family dementia caregiving provides an excellent model to study the impact of chronic stress on immune functioning among older individuals. Empirical data suggest that the stress of caregiving dysregulates multiple components of innate and adaptive immunity. Elderly caregivers have poorer responses to vaccines, impaired control of latent viruses, exaggerated production of inflammatory mediators and accelerated cellular aging, compared to noncaregiving older adults. The chronic stress-induced immune dysregulation observed among older caregivers appears to be of sufficient magnitude to impact health. Furthermore, evidence suggests that chronic stress leads to premature aging of the immune system. Copyright © 2008 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]