scholarly journals M102. MEASURING PHYSIOLOGICAL RESPONSES ASSOCIATED WITH SOCIAL STRESS IN A VIRTUAL ENVIRONMENT AND ITS RELATIONSHIP WITH CHILDHOOD TRAUMA IN EARLY SCHIZOPHRENIA - A PILOT STUDY

2020 ◽  
Vol 46 (Supplement_1) ◽  
pp. S174-S174
Author(s):  
Stéfan Du Plessis ◽  
Michelle Mckenzie ◽  
Ivan Crockart ◽  
Sanja Kilian ◽  
Frederika Scheffler ◽  
...  

Abstract Background In lower to middle income countries (LMIC), the influences of environmental stress on neurobiological processes involved in the development of schizophrenia is of great importance. High levels of stress may contribute to an increased burden of schizophrenia, including profound functional impairment and disability, decreased productivity, and even elevated mortality. Stress in Schizophrenia has been associated with behavioral disturbances such as maladaptive coping styles as well as well-established physiological abnormalities in sensorimotor gating in the form of abnormal startle responses. In turn, childhood trauma exposure is known to affect physiological stress responses. Indeed, we have found childhood trauma to be associated with both white matter and hippocampal changes in schizophrenia. Few studies, however, have explored the relationship between Childhood trauma and stress responses in schizophrenia. In recent years Virtual Reality (VR) has undergone a resurgence as a viable method for studying fear related physiological stress responses in an ecologically valid manner. Here we aim to investigate the potential relationship between abnormal physiological stress responses in schizophrenia with early life adversity. Methods Physiological response data were collected while participants completed a VR paradigm based on the Trier stress test, a well-established social stressor that reliably elicits a stress response in participants in VR and HPA axis attenuation in schizophrenia. Data were also collected in a fear of heights environment, not associated with abnormalities in schizophrenia. Childhood trauma was assessed with the Childhood Trauma Questionnaire (CTQ). HPA axis stress responses during the course of the task were assessed using saliva cortisol samples collected at key points during the paradigms. Results Preliminary data of both the social anxiety and fear of heights scenario will be presented. We will focus specifically on the viability of using VR in a LMIC context. Discussion VR could prove to be a cost-effective tool to explore the relationship between childhood trauma, stress sensitivity and schizophrenia.

2020 ◽  
Vol 116 ◽  
pp. 104582 ◽  
Author(s):  
Jessica A. Seddon ◽  
Violeta J. Rodriguez ◽  
Yannick Provencher ◽  
Jacquelyn Raftery-Helmer ◽  
Jacqueline Hersh ◽  
...  

2017 ◽  
Vol 41 (S1) ◽  
pp. S91-S91
Author(s):  
F. Marciello ◽  
V.-M. Buonomenna ◽  
V. Caivano ◽  
G. Cascino ◽  
G. D’Agostino ◽  
...  

IntroductionChildhood trauma exposure is associated with the risk of eating disorders (EDs) in adulthood. The biological basis of this link may involve a persistent dysregulation of the endogenous stress response system, in particular the hypothalamic-pituitary-adrenal (HPA) axis, as a consequence of early life maltreatment.ObjectiveAdult patients with EDs and history of childhood trauma may have a dysregulation of the HPA axis that could be different from EDs patients without childhood trauma exposure.AimsIn order to assess the effects of childhood trauma experiences on HPA-axis activity in EDs, we compared the salivary cortisol response to the Trier Social Stress Test (TSST) of adult patients with EDs according to their history of childhood trauma.MethodTwenty-seven EDs patients and 13 healthy women participated in the study. Salivary cortisol responses during exposure to the TSST was measured. Participants also completed the childhood trauma questionnaire (CTQ) and eating-related psychopathological rating scales.ResultsAccording to CTQ, 15 individuals with EDs reported childhood maltreatment whereas 12 EDs patients and all the healthy women did not experience childhood maltreatment. Compared with the control group, non-maltreated EDs patient group exhibited a slightly enhanced cortisol response to TSST, whereas the group of non-maltreated EDs patients showed a normal cortisol response. Moreover, EDs patients with childhood maltreatment exhibited statistically significant blunting of cortisol compared to non-maltreated ones.ConclusionsThe present findings support the evidence that, in patients with EDs, there is a dysregulation of HPA-axis activity and that childhood trauma exposure may contribute to this dysregulation.Disclosure of interestThe authors have not supplied their declaration of competing interest.


2021 ◽  
Vol 12 ◽  
Author(s):  
Qian Liu ◽  
Jianhui Wu ◽  
Liang Zhang ◽  
Xiaofang Sun ◽  
Qing Guan ◽  
...  

Psychological factors can modulate the hypothalamic–pituitary–adrenal (HPA) axis activity toward stressors. Animal studies demonstrated that uncontrollability was one critical factor associated with HPA axis stress response, but the results in human studies were inconsistent. The current study adopted a standardized laboratory stress induction procedure, the Trier Social Stress Test (the TSST), as the stressor to regulate the objective controllability level, and young adult participants were asked to rate their subjectively perceived control level toward the stressor and measured their cortisol stress responses (N=54; 19 females and 35 males) to address this concern. Results showed that participants’ perceived control on the TSST was related to the cortisol stress response. In other words, under the stress of a certain objective controllability level, the lower the subjectively perceived control level, the greater the HPA axis response. This finding suggested that, in addition to objective controllability, subjectively perceived control is a psychological factor that regulates activation of the HPA axis in young adults.


2020 ◽  
Vol 59 (6) ◽  
pp. 2969-2989 ◽  
Author(s):  
Tatjana Schnell ◽  
Dietmar Fuchs ◽  
René Hefti

AbstractThis study reports preliminary findings on the hypothesis that worldview can predict cardiovascular and cortisol responses to social stress. Based on theory and previous findings, we assumed that worldview security would provide a basis for stress resilience. Accordingly, religious and atheist individuals were expected to show higher stress resilience than spiritual and agnostic participants. Likewise, dimensional measures of religiosity and atheism were hypothesized to predict decreased, and existential search—indicating worldview insecurity—was hypothesized to predict increased physiological stress responses. Subjects included 50 university students who completed online questionnaires and took part in a standardized social stress test (Trier Social Stress Test). Systolic and diastolic blood pressure (SBP/DBP), heart rate (HR), and salivary cortisol (SC) were assessed at baseline, immediately after stress testing, and during a forty-minute recovery period. Worldview comparisons revealed lower cardiovascular stress responses among religious than among atheist and spiritual participants and particularly high baseline SC among spiritual participants. Across the entire sample, existential search showed substantial positive correlations with SBP, HR, and SC stress parameters. The findings suggest that worldview security might partly explain the health benefits often associated with religion.


2021 ◽  
pp. 1-14
Author(s):  
Sarah J. Taylor-Cavelier ◽  
Valerie J. Micol ◽  
Andrea G. Roberts ◽  
Elisa G. Geiss ◽  
Nestor Lopez-Duran

<b><i>Background:</i></b> Trauma can lead to long-term downregulation of the hypothalamic pituitary adrenal (HPA) axis. However, dehydroepiandrosterone (DHEA) has neuroprotective effects that may reduce the need for downregulation of the axis in response to stress. Furthermore, high DHEA/cortisol ratios are often conceptualized as better markers of DHEA’s availability than DHEA alone, as ratios account for the coupling of DHEA and cortisol in response to stress. <b><i>Objectives:</i></b> In this study, we explored if DHEA and DHEA/cortisol ratios moderated the association between childhood maltreatment and the HPA axis stress response. <b><i>Methods:</i></b> The sample consisted of 101 adolescents (ages 12–16) who completed the Child Trauma Questionnaire (CTQ) and the Trier Social Stress Test (TSST). Cortisol was modeled using saliva samples at 8 time points throughout the TSST. Cortisol and DHEA ratios were examined at baseline and 35 min after stress initiation. <b><i>Results:</i></b> Childhood maltreatment was associated with less steep cortisol activation slope and peak cortisol levels, but DHEA and DHEA/cortisol ratios moderated this effect. At high levels of DHEA, the impact of childhood maltreatment on cortisol peak levels was no longer significant. In contrast, high DHEA/cortisol ratios were associated with an intensification of the impact of childhood maltreatment on peak levels. <b><i>Conclusions:</i></b> Results suggest that DHEA can limit the blunting of the HPA axis in response to childhood maltreatment. However, this protective effect was not reflected in high DHEA/cortisol ratios as predicted. Therefore, high DHEA and high DHEA/cortisol ratios may reflect different, and potentially opposite, processes.


Perception ◽  
2017 ◽  
Vol 46 (3-4) ◽  
pp. 366-376 ◽  
Author(s):  
Matthias Hoenen ◽  
Oliver T. Wolf ◽  
Bettina M. Pause

The olfactory system and emotional systems are highly intervened and share common neuronal structures. The current study investigates whether emotional (e.g., anger and fear) and physiological (saliva cortisol) stress responses are associated with odor identification ability and hedonic odor judgments (intensity, pleasantness, and unpleasantness). Nineteen men participated in the modified Trier Social Stress Test (TSST) and a control session (cycling on a stationary bike). The physiological arousal was similar in both sessions. In each session, participants’ odor identification score was assessed using the University of Pennsylvania Smell Identification Test, and their transient mood was recorded on the dimensions of valence, arousal, anger, and anxiety. Multivariate regression analyses show that an increase of cortisol in the TSST session (as compared with the control session) is associated with better odor identification performance (β = .491) and higher odor intensity ratings (β = .562). However, increased anger in the TSST session (as compared with the control session) is associated with lower odor identification performance (β = −.482). The study shows divergent effects of the emotional and the physiological stress responses, indicating that an increase of cortisol is associated with better odor identification performance, whereas increased anger is associated with poorer odor identification performance.


Author(s):  
Chuk Ling Julian Lai ◽  
Daryl Yu Heng Lee ◽  
Monique On Yee Leung

Alteration in cortisol response to acute social stressors has been hypothesized to mediate childhood adversities (CA) and increased morbidity in adulthood. However, the evidence supporting an association between CA and cortisol response to social stressors is inconclusive. The present review addressed this issue by reviewing the literature on CA and cortisol response to acute social stressors, with a focus on studies with adolescents or adults, using the Childhood Trauma Questionnaire (CTQ) to assess CA, and examining salivary cortisol response to the Trier Social Stress Test (TSST). Systematic searches of relevant articles in PsycINFO, PubMed, Web of Science and ScienceDirect in February and March 2020 identified 12 articles including 1196 participants with mean ages ranging from 15.3 to 52.3 yrs. across studies. CTQ scores were significantly associated with cortisol response in 2 studies. In addition, the physical abuse and emotional neglect subscales were associated with cortisol response respectively in 2 separate studies. The lack of association between CA and cortisol response calls for more longitudinal studies, and the use of formal records of maltreatment or informant reports in future research to complement information collected by retrospective measures. In addition, increased attention to biological mechanisms other than that associated with the regulation of cortisol in explaining the connection between CA and psychiatry morbidity is warranted.


2021 ◽  
pp. 026988112097233
Author(s):  
Richard J Xia ◽  
Thomas Chao ◽  
Divya Patel ◽  
Gillinder Bedi

Background: Aspects of the canonical stress response differ in stimulant, opioid, and alcohol users relative to controls, and dysregulated responses to stress may contribute to continued use of these drugs. Little prior research has focused on stress responses in regular cannabis smokers. We assessed responses to a standardized laboratory social stress assay (the Trier Social Stress Task; TSST) in regular cannabis smokers (CANs) compared with controls (CONs). Methods: Healthy, non-treatment-seeking adult CANs (⩾4×/week; smoking cannabis as usual) and demographically matched CONs completed the TSST. Outcome measures were subjective mood, heart rate, and salivary cortisol. Results: Nineteen CANs (1 female) and 20 CONs (2 female) participated; groups were matched on trauma exposure, sex, race, and age. CANs smoked cannabis 6.4 ± 1.1 days/week. Eight CANs and one CON smoked tobacco cigarettes daily. Overall, the TSST produced expected increases in anxiety, negative mood states, cortisol, and heart rate. CANs had blunted subjective response to stress relative to CONs, but they did not differ in physiological (cortisol and cardiovascular) stress responding. Conclusion: These results indicate that CANs have blunted mood responses to social stress, but normative physiological stress responding. Observed differences could be due to residual effects of cannabis, reluctance to endorse negative mood states, or to issues related to identifying (i.e., emotional identification) or feeling (i.e., interoception) stress-related affective states. Further research is warranted to characterize the mechanisms of these differences and assess implications for daily functioning and treatment outcomes.


Author(s):  
Sisitha Udara Jayasinghe ◽  
Sarah Janet Hall ◽  
Susan Jane Torres ◽  
Anne Isabella Turner

While the patterns of response within the sympatho-adrenal medullary (SAM) system and hypothalamo-pituitary adrenal (HPA) axis are interesting and important in their own accord, the overall response to acute psychological stress involves reactivity of both pathways We tested the hypothesis that consideration of the integrated response of these pathways may reveal dysregulation of the stress systems that is not evident when considering either system alone. Age matched lean and overweight/obese men were subjected to a Trier Social Stress Test and reactivity of the SAM system (salivary alpha amylase, systolic blood pressure, diastolic blood pressure and heart rate) and the HPA axis (salivary cortisol) were measured. Relative reactivity of SAM system and HPA axis was calculated as the ratio between the measures from each pathway. While analysis of reactivity of individual stress pathways showed no evidence of dysfunction in overweight/obese compared with lean men, analysis of HPA/SAM reactivity revealed significantly lower cortisol over systolic blood pressure (CoSBP) and cortisol over diastolic blood pressure (CoDBP) reactivity in overweight/obese compared with lean men. Other measures of HPA/SAM reactivity and all measures of SAM/HPA reactivity were unaltered in overweight/obese compared with lean men. These findings suggest that the cortisol response per unit of blood pressure response is blunted in men with elevated adiposity. Further, these findings support a notion of a coordinated overall approach to activation of the stress pathways with the degree of activation in one pathway being related to the degree of activation of the other.


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