Harold Dadomo - Academia.edu (original) (raw)

Papers by Harold Dadomo

Journal of Rational-emotive & Cognitive-behavior Therapy, Aug 21, 2018

Schema therapy (ST) has been proven to be an effective psychotherapy model in the treatment of co... more Schema therapy (ST) has been proven to be an effective psychotherapy model in the treatment of complex personality disorders. ST helps analyze causes of emotional, cognitive, and behavioral alteration in patients using schemas and modes (i.e., sets of emotional states, coping responses and schemas active in a given moment). ST finds its empirical validation in the short Schema Mode Inventory (SMI), a practical tool consisting of 14 subscales assessing 14 different mode categories, grouped in 4 (child, coping, parent and adult modes) high-order categories used to assess different modes at different times. We introduced the Italian validation of the short SMI to a sample of 707 participants, of whom 230 were psychiatric patients. Confirmatory factor analysis (CFA) provides evidence that the 14-dimensional model best describes the SMI's structure at a lower level. Higher-order CFA provides evidence for both four higher-level mode categories and one higher-level mode category, the four-mode category being the best approach. Internal reliability, test-retest stability and the relationship between the SMI's subscales have been evaluated with promising results. Clinical vs nonclinical subjects were compared with a multigroup CFA in order to test invariance and with a MANOVA and Bonferroni post hoc comparisons in order to test mean differences. A linear thread was found for all modes except Bully/Attack. While contributing to international research and to the diffusion of SMI and schema therapy, our results also suggest that SMI is a powerful tool for the assessment of modes in ST, both in therapeutic and diagnostic contexts.

Sensors

Borderline personality disorder (BPD) is a severe personality disorder whose neural bases are sti... more Borderline personality disorder (BPD) is a severe personality disorder whose neural bases are still unclear. Indeed, previous studies reported inconsistent findings concerning alterations in cortical and subcortical areas. In the present study, we applied for the first time a combination of an unsupervised machine learning approach known as multimodal canonical correlation analysis plus joint independent component analysis (mCCA+jICA), in combination with a supervised machine learning approach known as random forest, to possibly find covarying gray matter and white matter (GM-WM) circuits that separate BPD from controls and that are also predictive of this diagnosis. The first analysis was used to decompose the brain into independent circuits of covarying grey and white matter concentrations. The second method was used to develop a predictive model able to correctly classify new unobserved BPD cases based on one or more circuits derived from the first analysis. To this aim, we analy...

Borderline Personality Disorder (BPD) is a severe personality disorder whose neural bases are sti... more Borderline Personality Disorder (BPD) is a severe personality disorder whose neural bases are still unclear. Indeed, previous studies reported inconsistent findings concerning alterations in cortical and subcortical areas. In the present study we applied for the first time an unsupervised machine learning approach known as mCCA+jICA, in combination with a supervised machine learning approach known as Random Forest, to possibly find covarying GM-WM circuits that separate BPD from controls and that are also predictive of this diagnosis. To this aim, we analyzed the structural images of patients with BPD and matched HCs. Results showed that two GM-WM covarying circuits, including basal ganglia, amygdala, and portions of the temporal lobes and of the orbitofrontal cortex, correctly classified BPD against HC. Notably, these circuits are affected by specific child traumatic experiences (emotional and physical neglect, and physical abuse) and predict symptoms severity in the interpersonal ...

Disease Markers

Background. Bronchopulmonary dysplasia (BPD) is a chronic lung disease affecting primarily preter... more Background. Bronchopulmonary dysplasia (BPD) is a chronic lung disease affecting primarily preterm and very low birth weight (VLBW) infants. Despite the advances in perinatal care, BPD remains a major clinical and costly complication in premature infants. The pathogenesis of BPD is complex and multifactorial. Prematurity, mechanical ventilation, oxidative stress, and inflammation are recognized as major interrelated contributing factors. Recently, some candidate genes involved in angiogenesis and alveolarization regulating mechanisms have been associated to BPD risk development. The aim of this study was to evaluate the role of vascular endothelial growth factor (VEGF) polymorphisms on BPD onset in VLBW newborns. Methods. Eighty-two VLBW infants, without major anomalies, were consecutively enrolled: 33 developed BPD (BPD group) and 49 infants without BPD served as controls (control group). In all infants, two polymorphisms, respectively (VEGF receptor) VEGFR1-710 C/T and VEGF +936 C...

Frontiers in Human Neuroscience, 2022

Child trauma plays an important role in the etiology of Bordeline Personality Disorder (BPD). Of ... more Child trauma plays an important role in the etiology of Bordeline Personality Disorder (BPD). Of all traumas, sexual trauma is the most common, severe and most associated with receiving a BPD diagnosis when adult. Etiologic models posit sexual abuse as a prognostic factor in BPD. Here we apply machine learning using Multiple Kernel Regression to the Magnetic Resonance Structural Images of 20 BPD and 13 healthy control (HC) to see whether their brain predicts five sources of traumas: sex abuse, emotion neglect, emotional abuse, physical neglect, physical abuse (Child Trauma Questionnaire; CTQ). We also applied the same analysis to predict symptom severity in five domains: affective, cognitive, impulsivity, interpersonal (Zanarini Rating Scale for Borderline Personality Disorder; Zan-BPD) for BPD patients only. Results indicate that CTQ sexual trauma is predicted by a set of areas including the amygdala, the Heschl area, the Caudate, the Putamen, and portions of the Cerebellum in BPD ...

Brain Research, 2021

According to the nosological classification, Bipolar Disorder (BD) and Borderline Personality Dis... more According to the nosological classification, Bipolar Disorder (BD) and Borderline Personality Disorder (BPD) are different syndromes. However, these pathological conditions share a number of affective symptoms that make the diagnosis difficult. Affective symptoms range from abnormal mood swings, characterizing both BD and BPD, to regulation dysfunctions, more specific to BPD. To shed light on the neural bases of these aspects, and to better understand differences and similarities between the two disorders, we analysed for the first time gray and white matter features of both BD and BPD. Structural T1 images from 30 patients with BD, 20 with BPD, and 45 controls were analysed by capitalizing on an innovative whole-brain multivariate method known as Source-based Morphometry. Compared to controls, BD patients showed increased gray matter concentration (p = .0032) in a network involving mostly subcortical structures and cerebellar areas, possibly related to abnormal mood experiences. Notably, BPD patients showed milder alterations in the same circuit, standing in the middle of a continuum between BD and controls. In addition to this, we found an altered white matter network specific to BPD (p = .0188), including frontal-parietal and temporal regions possibly associated with dysfunctional top-down emotion regulation. These findings may shed light on a better understanding of affective disturbances behind the two disorders, with bipolar patients more characterized by abnormalities in neural structures involved in mood oscillations, and borderline by deficits in the cognitive regulation of emotions. These results may help developing better treatments tailored to the specific affective disturbances displayed by these patients.

Behavioural Brain Research, 2020

Chronic social defeat can inhibit the reproductive system of subordinate males and causes behavio... more Chronic social defeat can inhibit the reproductive system of subordinate males and causes behavioral deficits. Sildenafil treatment increases mice testosterone levels through its effects on Leydig cells of mice and it has been found to work as an antidepressant drug both in humans and in animal models. Since previous findings showed that sildenafil can counteract the inhibitory effects of chronic social defeat on agonistic, reproductive and anxiety-like behaviors of subordinate male mice, we investigated whether these behavioral outcomes can be explained by Sildenafil stimulation of testosterone. CD1 mice underwent an intruder-resident paradigm. After the fifth day of test, subordinate mice were injected with either a 10 mg/kg Sildenafil or a saline solution for 4 weeks. The results of the present study showed that Sildenafil treatment increased counterattacking behaviors and sexual motivation of subordinate males in addition to limiting the increase in body weight often observed in...

Frontiers in Psychology, 2020

The aim of this article is to present recent applications of emotion regulation theory and method... more The aim of this article is to present recent applications of emotion regulation theory and methods to the field of psychotherapy. The term Emotion Regulation refers to the neurocognitive mechanisms by which we regulate the onset, strength, and the eventual expression of our emotions. Deficits in the regulation of emotions have been linked to most, if not all, psychiatric disorders, with patients presenting either dysregulated emotions, or dysfunctional regulatory strategies. We discuss the implications of regulating emotions from two different theoretical perspectives: the Cognitive Emotion Regulation (CER), and the Experiential-Dynamic Emotion Regulation (EDER) model. Each proposes different views on how emotions are generated, dysregulated and regulated. These perspectives directly influence the way clinicians treat such problems. The CER model views emotional dysregulation as due to a deficit in regulation mechanisms that prioritizes modifying or developing cognitive skills, whilst the EDER model posits emotional dysregulation as due to the presence of dysregulatory mechanisms that prioritizes restoring natural regulatory processes. Examples of relevant techniques for each model are presented including a range of cognitive-behavioral, and experiential (including both dynamic and cognitive) techniques. The aim of the paper is to provide a toolbox from which clinician may gain different techniques to enhance and maintain their patient's capacity for emotional regulation. Finally, the biological mechanisms behind the two models of emotion regulation are discussed as well as a proposal of a dual route model of emotion regulation.

Adaptive Human Behavior and Physiology, 2020

Objectives According to the DSM-5, in men, the inability to achieve or sustain an erection for sa... more Objectives According to the DSM-5, in men, the inability to achieve or sustain an erection for satisfactory sexual activity can be of organic or psychological nature. The risk factors for Psychogenic Erectile Dysfunction (PED) include exposure to episodic, acute or chronic stressors, dysfunctional lifestyle factors and relationship patterns, anxiety, mood and personality disorders, neurotic or submissive temperamental traits. We hypothesized that worsening socioeconomic condition may lead to PED, and that depression and temperament (harm avoidance) may act as mediators or moderators of this relationship. Methods Eighty-four patients with psychogenic erectile dysfunction and fifty healthy control subjects participated in a retrospective study that investigated stressful events (e.g., lifestyle factors) potentially associated with PED and our hypothesized mechanism linking stress, depression, temperament, and erectile dysfunction. Results In our clinical sample, loss of economic resources was a risk factor for PED and its effects were statistically mediated by depression, especially among individuals who scored high in harm avoidance. Conclusions Our findings are consistent with the rank theory of depression and emphasize the importance of an evolutionary approach to understanding clinical conditions such as psychogenic erectile dysfunction.

Frontiers in Psychology, 2018

Behavioural Brain Research, 2012

The impact of stress is widely recognized in the etiology of multiple disorders. In particular, p... more The impact of stress is widely recognized in the etiology of multiple disorders. In particular, psychological stress may increase the risk of cardiovascular, metabolic, immune, and mood disorders. Several genes are considered potential candidates to account for the deleterious consequences of stress and recent data point to role of Vgf. VGF mRNA is abundantly expressed in the hypothalamus, where it has been involved in metabolism and energy homeostasis; more recently a link between VGF-derived peptides and mood disorders has been highlighted. The following experiments were performed to address the contribution of the VGF-system to stress induced changes in mice: the distribution of VGF immuno-reactivity in hypothalamic nuclei and its modulation by social stress; the role of VGF-derived peptide TLQP-21 in plasma catecholamine release induced by acute restraint stress (RS); the efficacy of chronic TLQP-21 in a mouse model of chronic subordination stress (CSS). VGF fibers were found in high density in arcuate, dorsomedial, and suprachiasmatic and, at lower density, in lateral, paraventricular, and ventromedial hypothalamic nuclei. Central administration of either 2 or 4 mM TLQP-21 acutely altered the biphasic serum epinephrine release and decreased norepinephrine serum levels in response to RS. Finally, 28-day of 40 μg/day TLQP-21 treatment increased CSS-induced social avoidance of an unfamiliar conspecific. Overall these data support a role for TLQP-21 in stress responses providing a promising starting point to further elucidate its role as a player in stress-related human pathologies.

Journal of sex research, Jan 22, 2018

In this review, we analyze erectile dysfunction (ED) in the context of sexual selection. We highl... more In this review, we analyze erectile dysfunction (ED) in the context of sexual selection. We highlight that ED is a specific human male characteristic linked to the loss of the baculum or penile bone and results from a range of physical and psychological factors. We discuss evolutionary interpretations that consider dysfunctional penile erection as an honest signal of a low-quality male. We further emphasize the importance of considering psychosocial context and early attachment dynamics for understanding the etiology of some types of ED. Finally, we suggest that the integration of developmental factors for understanding the emergence of this sexual disorder is instrumental for the calibration of more effective therapies.

Social and psychological factors interact with genetic predisposition and dietary habit in determ... more Social and psychological factors interact with genetic predisposition and dietary habit in determining obesity. However, relatively few pre-clinical studies address the role of psychosocial factors in metabolic disorders. Previous studies from our laboratory demonstrated in male mice: 1) opposite status-dependent effect on body weight gain under chronic psychosocial stress; 2) a reduction in body weight in individually housed (Ind) male mice. In the present study these observations were extended to provide a comprehensive characterization of the metabolic consequences of chronic psychosocial stress and individual housing in adult CD-1 male mice. Results confirmed that in mice fed standard diet, dominant (Dom) and Ind had a negative energy balance while subordinate (Sub) had a positive energy balance. Locomotor activity was depressed in Sub and enhanced in Dom. Hyperphagia emerged for Dom and Sub and hypophagia for Ind. Dom also showed a consistent decrease of visceral fat pads weigh...

ABSTRACT The results of several recent epidemiological surveys, shows that male sexual dysfunctio... more ABSTRACT The results of several recent epidemiological surveys, shows that male sexual dysfunctions (e.g. erectile dysfunction and premature ejaculation) are extremely prevalent in the general population. These sexual disorders are strongly associated with aging and are influenced by a variety of medical, psychiatric, life style factors and have a significant relationship with mood, state and interpersonal functioning and overall quality of life. An emerging point of view in the last two decade shows that a combination of psychological (e.g. temperamental and personality trait), physiological (e.g. endocrine data) and ecological (e.g. social status) variables seem to be the most relevant factors to explain the develop of this difficulties. Recent epidemiological paper point out the relationships between depression, low dominance score and erectile dysfunctions. In this context, the rank theory of depression (known also as defeat theory or resource loss theory) suggests that depression is highly correlated with perceptions of low rank and subordinate status. In fact depressed people has a degree of inhibition in engagement in certain social activities, see themselves as inferior to others and tend to behave submissively, all variables also associated with anxiety, especially social anxiety as a specific stressor. Under this respect in animal species a recurring factor, as the exposure to chronic social stress has been associated with many systemic and behavioural disorders. However, being exposed to social stress does not necessarily predict subsequent pathological consequences, in fact social factors (i.e. dominance and submission) are a key factor in individual disease susceptibility. The aim of this thesis is to investigate the impact of social stress such as defeat and loss of rank on male mice sexual behavior and tentatively compare preliminary human clinical data supporting the view that loss of resource and/or rank is a critical factor in the development of sexual dysfunction accompanied by depressive state .

Adaptive Human Behavior and Physiology

Objectives There is evidence suggesting that in martial arts competitions athletes characterized ... more Objectives There is evidence suggesting that in martial arts competitions athletes characterized by higher anxiety and harm avoidance may be more likely to lose a fight. This psychological profile has been hypothesized to explain in part the observation that cortisol is higher in losers before and in response to a competition. An important research target that needs further exploration is the identification of phenotypic traits that can be helpful in predicting athletes’ performance. Here we present a brief description of the theoretical bases that drives our research in the evolutionary psychobiology of sports and illustrate preliminary data on the relationship between the 5HTTLPR genotype, salivary cortisol, temperament and competition. Methods Sixty-five healthy male non-professional athletes provided saliva samples 10 min before and after a kumite session and filled out the Tridimensional Personality Questionnaire. Results Salivary cortisol levels 10 min before the competition w...

Archives of Sexual Behavior

The Sexual Inhibition Scales and Sexual Excitation Scales (Janssen et al., 2002a), based on the d... more The Sexual Inhibition Scales and Sexual Excitation Scales (Janssen et al., 2002a), based on the dual control model by Bancroft and Janssen (2000), are part of a 45-item self-report questionnaire evaluating individual tendencies to sexual inhibition or excitation according to three factors: two inhibition factors, SIS1, threat of performance failure, and SIS2, threat of performance consequences, and one excitation factor, SES. In this paper, we aimed to validate and explore psychometric properties of the SIS/SES in a sample of 2260 Italian men and women aged 18 to 75 years. Confirmatory factor analyses showed that the three-factor structure proposed in the original version of the scales fit with our sample. Moreover, our data confirmed the results of the original validation sample: Women scored higher on the SIS and lower on the SES than men did, but no significant differences appeared in the factor scores by age group, except for a gender × age interaction, where younger women had h...

Journal of Personalized Medicine

Several studies have suggested a correlation between heart rate variability (HRV), emotion regula... more Several studies have suggested a correlation between heart rate variability (HRV), emotion regulation (ER), psychopathological conditions, and cognitive functions in the past two decades. Specifically, recent data seem to support the hypothesis that low-frequency heart rate variability (LF-HRV), an index of sympathetic cardiac control, correlates with worse executive performances, worse ER, and specific psychopathological dimensions. The present work aims to review the previous findings on these topics and integrate them from two main cornerstones of this perspective: Porges’ Polyvagal Theory and Thayer and Lane’s Neurovisceral Integration Model, which are necessary to understand these associations better. For this reason, based on these two approaches, we point out that low HRV is associated with emotional dysregulation, worse cognitive performance, and transversal psychopathological conditions. We report studies that underline the importance of considering the heart-brain relation...

Current opinion in psychiatry, 2018

To give an update on the most recent studies regarding the role of schema therapy in the treatmen... more To give an update on the most recent studies regarding the role of schema therapy in the treatment of emotion dysregulation related to personality disorders. In personality disorders, a lack of emotion regulation can be found. Schema therapy treats emotion dysregulation with a series of techniques, such as imagery rescripting, limited reparenting, chairwork, and cognitive restructuring to remove dysregulatory mechanism. Schema therapy is one of the most efficient therapies for personality disorders. However, there is a lack of recent studies on how it treats emotion dysregulation. Although the treatment of emotional dysregulation is not the core of schema therapy, it is certainly important inside this theoretical framework. The mode model helps clinicians address their work toward the reduction of dysfunctional modes, whereas fostering functional modes.

Hormones and behavior, 2018

Stressful life events are a major factor in the etiology of several diseases, such as cardiovascu... more Stressful life events are a major factor in the etiology of several diseases, such as cardiovascular, inflammatory and psychiatric disorders (i.e., depression and anxiety), with the two sexes greatly differing in vulnerability. In humans and other animals, physiological and behavioral responses to stress are strongly dependent on gender, and conditions that are stressful for males are not necessarily stressful for females. Hence the need of an animal model of social chronic stress specifically designed for females. In the present study we aimed to compare the effects of two different chronic stress procedures in female mice, by investigating the impact of 4weeks of nonsocial unpredictable, physical stress by the Chronic Mild Stress paradigm (CMS; Exp.1) or of Social Instability Stress (SIS; Exp.2) on physiological, endocrine and behavioral parameters in adult female mice. CMS had a pronounced effect on females' response to novelty (i.e., either novel environment or novel social ...