Background
There is increasing evidence suggesting that patients with Borderline Personality Disorder (BPD) are at greater risk of developing cardiovascular diseases (CVD) compared to the general population. Homocysteine (Hcy) has been discussed as a serum marker for endothelial dysfunction as a mechanism involved in CVD and has been shown to be associated with numerous psychiatric conditions. Pathophysiologically, there seems to be a link between Hcy and psychological stress mediated by abnormal activity of the autonomic nervous system. Accordingly, the present study sought to examine Hcy in BPD and to explore possible associations with clinical parameters.
Methods
Plasma Hcy levels as well as conventional cardiovascular risk factors, such as blood pressure, BMI, smoking habits, HbA1c, HDL, LDL, and cholesterol, were examined in 49 young female in-patients diagnosed with BPD and 50 psychologically healthy control subjects matched for age and sex. Assessment of borderline symptom severity, childhood trauma, exposure to chronic stress, and quality of sleep was performed using self-reported questionnaires.
Results
BPD patients showed significantly higher mean plasma Hcy concentrations compared to controls, though below ranges considered pathological. Moreover, Hcy correlated significantly with the severity of childhood trauma, chronic stress, and subjective sleep disturbances. In a regression model BPD diagnosis was found to predict Hcy levels best.
Conclusion
In conclusion, young female BPD patients with no history of CVD show higher, though non-pathological, Hcy levels compared to healthy controls. Our findings seem to support the assumption that BPD is associated with increased risk of CVD, and that Hcy could serve as potential marker for risk evaluation of midlife CVD in BPD patients.
ObjectiveBorderline personality disorder (BPD) is characterized by intense mood swings, impulsivity, self-injurious behavior, poor anger control, fear of abandonment, and unstable interpersonal relationships. BPD is also associated with a heightened risk of cardiovascular disease, whereby the underlying mechanisms are insufficiently understood. Accordingly, the present study set out to examine whether individuals with BPD would show abnormal myocardial deformation and to explore the role of potential risk factors, including maladaptive stress responsivity, childhood trauma, and current stress exposure.MethodsFifty female patients diagnosed with BPD and 50 controls matched for sex and age underwent echocardiography to determine the global longitudinal strain (GLS) of the left ventricle. In addition, childhood trauma, chronic stress, and “allostatic load” were determined, as well as borderline symptom severity and common risk factors for cardiovascular disease.ResultsAside from a significantly greater GLS in BPD patients, a multivariable regression analysis revealed that allostatic load (β = 0.225, p = .048) was significantly associated with GLS, with childhood trauma (β = 0.279, p = .062) approaching significance. Conversely, smoking (p = .867), chronic stress (p = .193), and borderline symptom severity (p = .342) were not associated with GLS, even though bivariate correlations were significant.ConclusionsSomatically healthy women with BPD display subtle signs of increased GLS, which is associated with allostatic load as an indicator of the “wear-and-tear” of the body. The association between childhood trauma with GLS was of similar strength but did not reach the threshold for statistical significance. This finding may support the need for primary prevention of somatic consequences of maladaptive stress responsivity in psychiatric patients.
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