Publications by authors named "Michopoulos V"

Article Synopsis
  • - The study investigates sex/gender differences in PTSD by examining 16 risk factors and their impact on PTSD severity in a group of 2,924 acutely traumatized individuals.
  • - It finds that six risk factors are more prevalent in women, while none are more pronounced in men, highlighting unique pathways contributing to PTSD severity based on sex assigned at birth.
  • - The results indicate different risk mechanisms for men and women, suggesting that understanding these differences can help develop targeted mental health interventions and inform future research on other mental disorders.
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Background: Exposure to trauma across the life course may be associated with cardio-metabolic dysfunction during pregnancy; however, previous research has been inconsistent, particularly in highly exposed populations.

Objectives: To estimate associations between types and timing (first occurrence) of trauma exposure and hypertension experienced during pregnancy in a safety-net hospital in Atlanta, Georgia, 2011-2022.

Methods: Participants completed a 14-item trauma screener.

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Borderline Personality Disorder (BPD) is characterized by rapidly shifting emotional, interpersonal, and behavioral symptoms, and is often co-morbid with mood and anxiety disorders. Females are more likely to be diagnosed with BPD than males and exhibit greater functional impairment. Hormonal fluctuations, particularly in estrogen levels, may influence the manifestation of BPD symptoms.

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Objective: People living with HIV (PLWH) experience high rates of childhood trauma exposure, which is a significant risk factor for the development of posttraumatic stress disorder (PTSD). Because Black Americans living in urban environments are exposed to high levels of trauma, suffer from chronic PTSD, and are at increased risk for HIV infection, it is important to understand how HIV status interacts with childhood maltreatment to influence PTSD symptom severity and underlying psychophysiology.

Methods: The current cross-sectional study assessed whether HIV status interacts with childhood maltreatment to influence PTSD symptom severity and heart rate variability during a dark-enhanced startle (DES) task in 88 Black women with (n=30) and without HIV (n=58).

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Understanding biological pathways that mediate trauma-related psychopathology is a major goal for traumatic stress studies. There is growing interest in studying differences in neural, physiological, and behavioral correlates of traumatic stress across demographic groups (e.g.

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Background: Knowledge of sex differences in risk factors for posttraumatic stress disorder (PTSD) can contribute to the development of refined preventive interventions. Therefore, the aim of this study was to examine if women and men differ in their vulnerability to risk factors for PTSD.

Methods: As part of the longitudinal AURORA study, 2924 patients seeking emergency department (ED) treatment in the acute aftermath of trauma provided self-report assessments of pre- peri- and post-traumatic risk factors, as well as 3-month PTSD severity.

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Aggression is a costly public health problem with severe and multi-faceted negative consequences and thus, identifying factors that contribute to aggression, particularly in understudied populations, is necessary to develop more effective interventions to reduce the public health cost of aggression. The goal this study was to test whether difficulties regulating emotions moderated the association between posttraumatic stress disorder (PTSD) symptoms and aggression in a community sample of predominantly Black females with high levels of trauma exposure. Furthermore, we explored unique relations between PTSD symptom clusters and distinct subscales of difficulties regulating emotions and aggression.

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Article Synopsis
  • PTSD genetics have been difficult to study compared to other psychiatric disorders, limiting our biological understanding of the condition.
  • A large-scale meta-analysis involving over 1.2 million individuals identified 95 genome-wide significant loci, with 80 being new discoveries related to PTSD.
  • Researchers identified 43 potential causal genes linked to neurotransmitter activity, developmental processes, synaptic function, and immune regulation, enhancing our knowledge of the neurobiological systems involved in PTSD.
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Black pregnant and postpartum individuals are at risk for intimate partner violence (IPV), and those with a history of childhood maltreatment and IPV are even more likely to be re-victimized during pregnancy. However, it is unknown if specific types of child maltreatment predict later IPV with and without a weapon better than others. The current study sought to (i) document the prevalence of childhood maltreatment and IPV and (ii) examine the relations among types of childhood maltreatment and later IPV with and without a weapon within a sample of Black individuals seeking prenatal care at a large public hospital in the southeastern United States.

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Observational studies suggest that posttraumatic stress disorder (PTSD) increases risk for various autoimmune diseases. Insights into shared biology and causal relationships between these diseases may inform intervention approaches to PTSD and co-morbid autoimmune conditions. We investigated the shared genetic contributions and causal relationships between PTSD, 18 autoimmune diseases, and 3 immune/inflammatory biomarkers.

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Background: The prevalence of posttraumatic stress disorder (PTSD) among people living with HIV (PLWH) is higher than in the general population and can impact health behaviors. The influence of HIV on PTSD psychophysiology requires further investigation due to implications for the treatment of PTSD in PLWH.

Objective: Utilizing fear-potentiated startle (FPS), we aimed to interrogate the influence of PTSD and HIV on fear responses.

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Background: Mood disorders such as major depressive and bipolar disorders, along with posttraumatic stress disorder (PTSD), schizophrenia (SCZ), and other psychotic disorders, constitute serious mental illnesses (SMI) and often lead to inpatient psychiatric care for adults. Risk factors associated with increased hospitalization rate in SMI (H-SMI) are largely unknown but likely involve a combination of genetic, environmental, and socio-behavioral factors. We performed a genome-wide association study in an African American cohort to identify possible genes associated with hospitalization due to SMI (H-SMI).

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Introduction: Individuals living in areas with high rates of poverty are disproportionately affected by posttraumatic stress disorder (PTSD). Despite this association, little is known about how neighborhood poverty rates impact risk for PTSD development. In the current prospective study, we determined the relationship between neighborhood poverty rate and PTSD symptoms six-months after experiencing a traumatic event in a sample of varied race, gender, and socioeconomic status.

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Purpose: Young women are typically thought to be protected from cardiovascular disease (CVD) before menopause. However, posttraumatic stress disorder (PTSD) increases CVD risk in women by up to threefold. Data in predominantly male cohorts point to physiological mechanisms such as vascular and autonomic derangements as contributing to increased CVD risk.

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Gestational metabolic diseases adversely impact the health of pregnant persons and their offspring. Pregnant persons of color are impacted disproportionately by gestational metabolic disease, highlighting the need to identify additional risk factors contributing to racial-ethnic pregnancy-related health disparities. Trauma exposure and posttraumatic stress disorder (PTSD) are associated with increased risk for cardiometabolic disorders in nonpregnant persons, making them important factors to consider when identifying contributors to gestational metabolic morbidity and mortality health disparities.

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Objective: To estimate associations between types and timing (first occurrence and time since) of trauma exposure and hypertension experienced during pregnancy in a safety-net hospital in Atlanta, Georgia.

Methods: Participants completed a 14-item trauma screener. We linked that information to data from the medical record on hypertension (inclusive of chronic hypertension, gestational hypertension, or preeclampsia).

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Article Synopsis
  • Exposure to traumatic events is linked to mental health issues like PTSD, depression, and anxiety, as well as physical conditions such as asthma, particularly among women.
  • A study with 508 women found that those with asthma experienced higher levels of PTSD and depression; another smaller group underwent fMRI scans to examine brain responses to social threats.
  • Results suggest a connection between asthma and increased severity of trauma-related symptoms, highlighting the relationship between stress, brain activity, and mental health.
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Article Synopsis
  • The study investigates the link between socioeconomic status (SES) and maternal serum cytokine profiles during pregnancy, focusing on how lower SES correlates with chronic inflammation.
  • Researchers compared cytokine levels in pregnant women from low SES (Medicaid-insured) and high SES (privately-insured) backgrounds, finding significant differences in inflammatory markers.
  • Results indicated higher levels of IL-6 (linked to chronic inflammation) in the low SES group and lower levels of IL-1β and TNF-α, suggesting that SES may impact inflammation and thereby affect pregnancy outcomes.
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Article Synopsis
  • The study investigates how social dominance affects behavior and serotonin levels in male and female rhesus monkeys, acknowledging that most previous research has focused only on males.
  • Findings reveal that dominant monkeys show more aggression, while subordinate monkeys exhibit higher submission, with females generally demonstrating greater anxiety-like behaviors than males.
  • The results suggest that sex interacts with social status to influence certain neurochemical processes related to socioemotional behavior, highlighting the importance of including both sexes in research on stress-related disorders.
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Objective: Black pregnant individuals are at disproportionate risk for posttraumatic stress disorder (PTSD) compared to other groups. A wealth of literature suggests racial stress contributes to this inequity, but cultural and structural mechanisms, such as perceived barriers to mental health treatment, underlying the relationship between racial stress and PTSD symptoms remain understudied. Negative evaluations of psychotherapy and stigma represent potential mechanisms, though no previous studies have examined these associations.

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Prior research has shown that racial discrimination (RD) impacts activation in threat network regions, including the ventromedial prefrontal cortex (vmPFC) and middle occipital cortex during attention to threat-relevant stimuli. However, little is known about the biological mechanisms that may modulate these effects; inflammation may be a pathway linking RD and threat network activation. As such, the current study aimed to explore whether systemic inflammation, measured by C-reactive protein (CRP) levels, may moderate the relationship between RD and activation in the vmPFC and middle occipital cortex during attention to threat.

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Article Synopsis
  • PTSD genetics are harder to study compared to other mental health disorders, resulting in limited biological insights from past research.
  • A large-scale analysis involving over 1.2 million individuals found 95 significant genetic loci related to PTSD, with 80 being new discoveries.
  • The study identified 43 potential causal genes linked to neurotransmitters, synaptic function, and immune responses, enhancing understanding of PTSD's biological mechanisms and suggesting new research directions.
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Objective: This study aimed to determine the relationship between stages of the menopause transition (premenopausal, perimenopausal, and postmenopausal) on symptoms of posttraumatic stress disorder (PTSD) and depression in trauma-exposed women.

Methods: A cross-sectional study conducted between 2005 and 2017 recruited and enrolled an urban community sample (n = 6,093) from nonpsychiatric medical clinic waiting rooms of Grady Memorial Hospital, a public safety net hospital in Atlanta, Georgia. Participants were female, 18 to 65 years old, and predominantly Black/African American.

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