Post-traumatic Stress and Depressive Symptoms in Women With Ovarian Cancer 3-6 Months After Diagnosis.

BACKGROUND/AIM: The potentially traumatic role of severe life-threatening medical conditions is still debated in psychiatry and not yet recognized, particularly among post-traumatic stress disorders. However, increasing evidence suggests the psychopathological impact of severe medical conditions related to their poor prognosis, high lethality, treatments heaviness and invasiveness. Ovarian cancer (OC) is one of the malignancies with the highest mortality and the aim of this study was to investigate post-traumatic stress and depressive symptoms in women 3 to 6 months after diagnosis. PATIENTS AND METHODS: A sample of 83 women diagnosed with OC at different stages (from AI to IV) was recruited and assessed by means of the: Structural Clinical Interview for Mental Disorders according to DSM-5 (SCID-5), Trauma and Loss Spectrum Self-Report (TALS-SR), Impact Event Scale-Revised (IES-R), Hamilton Rating Scale for Depression (HAM-D), Mood Spectrum-Self Report (MOOD-SR), Work and Social Adjustment Scale (WSAS). RESULTS: Full data on the psychiatric assessments were available for 45 patients: 13 (28.9%) patients reported a diagnosis of PTSD. Patients with PTSD reported statistically significant higher depressive symptoms and more severe impact on work and social functioning compared to those without PTSD. CONCLUSION: Our results highlight the need to carefully assess the potentially traumatic burden of a diagnosis of OC and its association with depressive symptoms for their impact on patients' global functioning, in order to provide appropriate preventive and therapeutic interventions.

The relationship between peritraumatic distress, mental health symptoms, and functioning impairment in healthcare workers during the COVID-19 emergency.

OBJECTIVE: Healthcare workers (HCWs) were considered a population at risk for developing psychiatric symptoms during the COVID-19 pandemic, such as anxiety, depression, and post-traumatic stress disorder (PTSD). Peritraumatic distress is associated with post-traumatic psychopathological symptoms; however, little is known about how it may affect functioning. The study aimed at evaluating the level of peritraumatic distress in a sample of HCWs during the first wave of the COVID-19 pandemic and at examining the relationship between peritraumatic distress, mental health symptoms, and functioning impairment. METHODS: A sample of 554 frontline HCWs were consecutively enrolled in major university hospitals and community services in Italy. The PDI, IES-R, PHQ-9, and GAD-7 were used to assess peritraumatic distress, symptoms of PTSD, depression, and anxiety, respectively, and the WSAS to investigate functioning impairment. PDI scores were higher among females, community services, physicians, and nurses. Furthermore, the PDI correlated significantly with the GAD-7, PHQ-9, IES-R, and WSAS. RESULTS: In a mediation analysis, the direct effect of PDI on WSAS and the indirect effects through the PHQ-9 and IES-R were statistically significant (P < .001). CONCLUSION: Peritraumatic distress reported by HCWs was associated with symptoms of PTSD, depression, and anxiety, but the association with reduced functioning may be only partially mediated through symptoms of depression and PTSD.

Autistic Traits as Predictors of Increased Obsessive-Compulsive Disorder Severity: The Role of Inflexibility and Communication Impairment.

Due to similar manifestations, some authors have proposed a potential correlation between autism spectrum disorder (ASD) and obsessive-compulsive disorder (OCD). This link has long been recognized and debated, with some authors arguing that these disorders frequently occur comorbid but distinct while others believe they are part of the same spectrum. The aim of our study was to explore the prevalence and correlates of autistic traits in 55 OCD patients and 55 matched controls and to assess possible autistic dimensions predictive of higher OCD symptoms. All participants were assessed with the Obsessive-Compulsive Spectrum-Short Version (OBS-SV) and the Adult Autism Subthreshold Spectrum (AdAS Spectrum). The OCD group scored significantly higher in both questionnaires. Total OBS-SV scores and domains were significantly correlated with all AdAS Spectrum domains and total score. The AdAS Spectrum total, Verbal Communication and Inflexibility and adherence to routine domain scores were significant positive predictors of higher OBS-SV scores. Lastly, when two clusters of subjects (high and low autism) were determined, Inflexibility and adherence to routine domain presented the greatest influence in forming the clusters. Our findings support the association between OCD and autistic traits in the adult population, supporting the hypothesis of a neurodevelopmental basis for these psychiatric conditions.

Rumination and altered reactivity to sensory input as vulnerability factors for developing post-traumatic stress symptoms among adults with autistic traits.

OBJECTIVE: Recent literature has suggested that individuals with autism spectrum disorder (ASD) or autistic traits (ATs) would be more likely to encounter traumatic events in their lifetime and to develop post-traumatic stress disorder (PTSD). However, the nature of this relationship has not yet been fully elucidated. The aims of this study were to evaluate the relationship between AT and PTSD and to investigate which specific autistic dimension was more associated with trauma and stress-related symptoms. METHODS: A total of 68 subjects with ASD and 64 healthy controls (HCs) were assessed with the Adult Autism Subthreshold Spectrum (AdAS Spectrum) and the Trauma and Loss Spectrum (TALS) questionnaires. Statistical analyses included Mann-Whitney U test, chi-square test, calculation of Spearman's coefficients, and logistic regression analysis. RESULTS: Patients with significant AT reported a 30% rate of PTSD and higher TALS total and domain scores than HCs, among whom no PTSD was found instead. Significant positive correlations were reported between AdAS Spectrum and TALS-SR scores in the whole sample. AdAS Spectrum total scores were statistically predictive of the presence of PTSD. High scores at AdAS Spectrum Inflexibility and adherence to routine and Restrictive interest and rumination domains were identified as positive predictors of a probable PTSD. CONCLUSION: Compared to HCs, subjects with significant AT are more likely to present symptoms of PTSD. In particular, AT related to ruminative thinking, narrow interests, and sensorial reactivity would seem to predict the presence of post-traumatic stress symptomatology.

Implications of Social Anxiety Symptoms in Adults with Autism Spectrum Disorder: Is There a Predictive Role of Interpersonal Sensitivity and Substance Abuse?

Social anxiety disorder (SAD) has been frequently reported by subjects with Autism Spectrum Disorder (ASD). However, interestingly, the overlap between social anxiety and autistic traits may sometimes impede ASD diagnosis in subjects without intellectual or language impairment. The aim of the present work was to evaluate the presence and correlates of social phobic features among subjects with ASD, with a specific focus on evaluating which social anxiety symptoms may be statistically predictive of an ASD diagnosis. With this purpose, 48 subjects with ASD and 48 gender- and age- matched healthy controls (HCs) were recruited and assessed with the SHY-SV and the AdAS Spectrum questionnaires. Results highlighted higher scores in all SHY-SV Spectrum domains and total scores for the ASD group. Moreover, AdAS Spectrum scores were significantly correlated with all SHY-SV domain and total scores. A logistic regression analysis highlighted the SHY-SV Interpersonal sensitivity and Substance Abuse domains scores as significant positive predictors of an ASD diagnosis. These results confirm the link between ASD and SAD. Because of this association, particular attention should be paid to subjects with high interpersonal sensitivity traits and substance abuse problems.

Autistic and Catatonic Spectrum Symptoms in Patients with Borderline Personality Disorder.

BACKGROUND: Recent literature has shown that a considerable percentage of patients with severe mental disorders can develop, over time, full-blown or subthreshold catatonia. Some studies corroborate the model of an illness trajectory in which different mental disorders would be arranged along a continuum of severity until the development of catatonia. In such an illness pathway, autistic traits (AT) and borderline personality disorder (BPD) may represent important steps. In order to further explore the association between AT, BPD, and catatonia, the aim of this study was to compare catatonic spectrum symptoms and AT among patients with major depressive disorder (MDD), BPD, and healthy controls (CTL), also evaluating possible predictive dimensions of the different diagnoses. METHODS: A total of 90 adults affected by BPD, 90 adults with a diagnosis of MDD, and 90 CTL, homogeneous in terms of gender and age, were recruited from six Italian university departments of psychiatry and assessed with the SCID-5-RV, the Catatonia Spectrum (CS), and the Adult Autism Subthreshold Autism Spectrum (AdAS Spectrum). RESULTS: The total CS score was significantly higher in the BPD and MDD groups than in the CTL group, while the majority of CS domain scores were significantly higher in the BPD group than in the MDD group, which scored significantly higher than the CTL group. The total AdAS Spectrum score and the AdAS Spectrum domain scores were significantly higher in the BPD group than in the MDD group, which in turn scored significantly higher than the CTL group. The CS domains "psychomotor activity" and "impulsivity", and AdAS Spectrum domains "verbal communication", "empathy", and "hyper-/hyporeactivity to sensory input" were associated with the risk of presenting a diagnosis of BPD.

Variation of Circulating Brain-Derived Neurotrophic Factor (BDNF) in Depression: Relationships with Inflammatory Indices, Metabolic Status and Patients' Clinical Features.

This study seeks to offer a contribution to the method of subtyping major depressed patients by exploring the possible relationships between circulating brain-derived neurotrophic factor (BDNF), different peripheral inflammatory/metabolic markers in the blood and clinical characteristics. Thirty-nine patients, thoroughly diagnosed according to the DSM-5 criteria, underwent a comprehensive set of evaluations encompassing structured interviews, rating scales and a panel of blood tests. Correlation and comparison analyses were carried out by means of non-parametric statistical tests. Concurrently, a principal component analysis was performed to explain biochemical variance. The findings of our research unveiled that leukocyte counts, their ratios and other inflammatory parameters are positively correlated with depression scores. Moreover, we found variations within the BDNF pools of depressed patients. Specifically, higher levels of platelet-poor plasma BDNF (PPP-BDNF) were correlated with augmented inflammatory markers in patients showing specific episode characteristics, whereas reduced platelet BDNF (PLT-BDNF) provided a better indication of the changes that were linked to a diagnosis of long-term depression. Our findings suggest that PPP-BDNF and PLT-BDNF might differentiate depression conditions. They also imply usefulness in appraising peripheral biomarker profiles in patients for a deeper characterization of major depressive episodes. At the same time, it is plausible that they might constitute novel avenues for developing more tailored therapeutic strategies for patients with MDs.

Unlocking the Secrets: Exploring the Biochemical Correlates of Suicidal Thoughts and Behaviors in Adults with Autism Spectrum Conditions.

Involving 1 million people a year, suicide represents one of the major topics of psychiatric research. Despite the focus in recent years on neurobiological underpinnings, understanding and predicting suicide remains a challenge. Many sociodemographical risk factors and prognostic markers have been proposed but they have poor predictive accuracy. Biomarkers can provide essential information acting as predictive indicators, providing proof of treatment response and proposing potential targets while offering more assurance than psychological measures. In this framework, the aim of this study is to open the way in this field and evaluate the correlation between blood levels of serotonin, brain derived neurotrophic factor, tryptophan and its metabolites, IL-6 and homocysteine levels and suicidality. Blood samples were taken from 24 adults with autism, their first-degree relatives, and 24 controls. Biochemical parameters were measured with enzyme-linked immunosorbent assays. Suicidality was measured through selected items of the MOODS-SR. Here we confirm the link between suicidality and autism and provide more evidence regarding the association of suicidality with increased homocysteine (0.278) and IL-6 (0.487) levels and decreased tryptophan (-0.132) and kynurenic acid (-0.253) ones. Our results suggest a possible transnosographic association between these biochemical parameters and increased suicide risk.

Validation of the Short Version of the Panic Agoraphobic Spectrum (PAS-SV) Questionnaire.

Objective: a spectrum model of psychopathology has allowed, in recent years, to recognize the subclinical or sub-threshold symptomatology that may be associated with full-blown mental disorders. The conceptualization of a panic - agoraphobic spectrum was developed in consideration of the substantial clinical heterogeneity revealed by studies on panic disorder with or without agoraphobia. The current study aims to determine the psychometric properties of the Panic Agoraphobic Spectrum - Short Version (PAS-SV), a new questionnaire designed to identify the spectrum of panic - agoraphobic symptoms. Method: 42 subjects with panic disorder or agoraphobia (PAD) according to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), 41 subjects with autism spectrum disorder (ASD), and 60 healthy controls (HC) were recruited from the Psychiatric Clinic of the University of Pisa and assessed with the SCID-5, the Panic Disorder Severity Scale (PDSS) and the PAS-SV. Results: PAS-SV demonstrated a high level of internal consistency and the test-retest reliability for total and domain scores was excellent. PAS-SV domain scores were positively and significantly correlated with each other (p < 0.001), with Pearson's coefficients ranging from 0.771 to 0.943. All the PAS-SV domain scores were highly correlated with the PAS-SV total score. The correlation coefficients between PAS-SV and alternative measures of panic - agoraphobic symptoms appeared all significant and positive. Significant differences among diagnostic groups on both PAS-SV domains and total scores were found. PAS-SV total score increased significantly and progressively from HC, to the ASD up to the PA group. Conclusions: The PAS-SV showed excellent internal consistency and test-retest reliability and strong convergent validity with alternative dimensional measures of PA. The questionnaire performed differently among the three diagnostic groups, with an increasing score gradient from HC to patients with ASD to the PA group.

Presence and correlates of autistic traits among patients with social anxiety disorder.

Introduction: Due to their similar behavioral presentation, it can sometimes be challenging to distinguish between a social anxiety disorder (SAD) and the social avoidance that is frequently described in autism spectrum disorder (ASD). Moreover, a growing body of evidences is reporting that a significant proportion of subjects with ASD also meet the requirements for SAD and, vice versa, subjects with SAD tend to exhibit a higher prevalence of autistic traits. Aim: In this framework, the current study aims to evaluate prevalence and correlates of autistic traits in a sample of adult subjects diagnosed with SAD and healthy controls (HC), also evaluating which autism spectrum dimensions may statistically predict higher SAD symptoms. Methods: 56 subjects with a clinical diagnosis of SAD and 56 gender and age matched HC were recruited from the Psychiatric Clinic of the University of Pisa. Subjects were assessed with the SCID-5, the Social Anxiety Spectrum - Short Version (SHY- SV) and the Adult Autism Subthreshold Spectrum (AdAS Spectrum). Results: SAD group scored significantly higher in all AdAS Spectrum and SHY-SV domains and total score compared to the HC group with no significant gender difference. SHY-SV total and domain scores, were strongly and positively and strongly correlated with all AdAS Spectrum domains and total score. AdAS Spectrum total score and Childhood/Adolescence, Non-Verbal Communication, Empathy and Restricted interests and Rumination domain scores score were significant predictors of higher SHY-SV score. Conclusion: Our results confirm the link between SAD and autistic traits also in adult population, describing not only high levels of autistic traits in SAD adults, but also significant correlations between many core features of the two disorders and a predictive role of autistic traits on higher SAD symptoms.

The complex interactions among serotonin, insulin, leptin, and glycolipid metabolic parameters in human obesity.

OBJECTIVE: To provide evidence to the link between serotonin (5-HT), energy metabolism, and the human obese phenotype, the present study investigated the binding and function of the platelet 5-HT transporter (SERT), in relation to circulating insulin, leptin, and glycolipid metabolic parameters. METHODS: Seventy-four drug-free subjects were recruited on the basis of divergent body mass index (BMIs) (16.5-54.8 Kg/m2). All subjects were tested for their blood glycolipid profile together with platelet [3H]-paroxetine ([3H]-Par) binding and [3H]-5-HT reuptake measurements from April 1st to June 30th, 2019. RESULTS: The [3H]-Par Bmax (fmol/mg proteins) was progressively reduced with increasing BMIs (P < .001), without changes in affinity. Moreover, Bmax was negatively correlated with BMI, waist/hip circumferences (W/HC), triglycerides (TD), glucose, insulin, and leptin, while positively with high-density lipoprotein (HDL) cholesterol (P < .01). The reduction of 5-HT uptake rate (Vmax, pmol/min/109 platelets) among BMI groups was not statistically significant, but Vmax negatively correlated with leptin and uptake affinity values (P < .05). Besides, [3H]-Par affinity values positively correlated with glycemia and TD, while [3H]-5-HT reuptake affinity with glycemia only (P < .05). Finally, these correlations were specific of obese subjects, while, from multiple linear-regression analysis conducted on all subjects, insulin (P = .006) resulting negatively related to Bmax independently from BMI. CONCLUSIONS: Present findings suggest the presence of a possible alteration of insulin/5-HT/leptin axis in obesity, differentially impinging the density, function, and/or affinity of the platelet SERT, as a result of complex appetite/reward-related interactions between the brain, gut, pancreatic islets, and adipose tissue. Furthermore, they support the foremost cooperation of peptides and 5-HT in maintaining energy homeostasis.

Problematic Use of the Internet in Subjects With Bipolar Disorder: Relationship With Posttraumatic Stress Symptoms.

Background: Literature shows a high risk for problematic use of the Internet (PUI) in mood disorders, especially in bipolar disorder (BD). In subjects with BD, traumatic events and posttraumatic stress disorder (PTSD) are related to alcohol or substance use disorder, as well as to gambling disorder. However, little is known about the possible association between traumatic exposure and PUI. The present study was aimed at examining the relationship between PUI and trauma exposure, besides PTSD symptoms, in subjects with BD. Methods: A sample of 113 subjects with BD was screened to putative PUI. Furthermore, they completed the Trauma and Loss Spectrum Self-Report (TALS-SR) to assess traumatic events and posttraumatic stress symptoms. Results: Twenty-four subjects (21.2%) reported putative PUI. Subjects with putative PUI presented significantly higher scores in the TALS-SR domains Potentially Traumatic Events, Re-experiencing, Maladaptive coping, and Arousal, as well as in the TALS-SR total score. In a logistic regression model, a positive association emerged between Potentially Traumatic Events and Arousal TALS-SR domains and putative PUI. Conclusion: One in five patients with BD screened positive for PUI. A significant association between PUI and lifetime traumatic events as well as PTSD symptoms emerged, highlighting the relevance of the comorbidity between PTSD and PUI in subjects with BD.

Comparing re-hospitalisation rates in a real-world naturalistic 24-month follow-up of psychotic patients with different treatment strategies: Oral versus LAI antipsychotics.

AIM & BACKGROUND: Non-adherence to antipsychotic treatment is a major issue in the management of severe psychiatric disorders, because it is usually related to future relapses and re-hospitalisations. Long-Acting-Injection (LAI) antipsychotics can be useful to increase treatment adherence in these patients. The aim of the present study was to compare the re-hospitalisation rates of psychotic patients discharged from a psychiatric ward and then, divided into three groups upon the treatment received: LAI antipsychotic, oral antipsychotic at home or oral antipsychotic administered daily by psychiatric nurse staff as patients lived in a long-term care facility. METHODS: Data on all inpatients consecutively admitted to the Psychiatric Unit of the Nuovo Ospedale Apuano (Massa, Italy), between January 2017 and December 2018, were obtained by the registration record system. Information about eventual re-hospitalisations of these patients, occurred within a 24-month timeframe since discharge, were collected from the same database. RESULTS: In a Kaplan-Meyer analysis, patients treated with LAI antipsychotics showed significantly lower re-hospitalisation rates in the first 24 months after discharge than those treated with oral ones. CONCLUSIONS: This study highlights the impact of LAI antipsychotics in preventing re-hospitalisation in severe psychotic patients at high risk in a naturalistic setting. The benefits appear relevant also with respect to a controlled long-term oral antipsychotic treatment, however, further studies are needed to develop more tailored intervention strategies in such complex psychiatric population.

PTSD and Burnout are Related to Lifetime Mood Spectrum in Emergency Healthcare Operator.

BACKGROUND: PTSD and burnout are frequent conditions among emergency healthcare personnel because exposed to repeated traumatic working experiences. Increasing evidence suggests high comorbidity between PTSD and mood symptoms, particularly depression, although the real nature of this relationship still remains unclear. The purpose of this study was to investigate the relationship between PTSD, burnout and lifetime mood spectrum, assessed by a specific scale, among health-care professionals of a major University Hospital in Italy. METHODS: N=110 Emergency Unit workers of the Azienda Ospedaliero-Universitaria Pisana (Pisa, Italy) were assessed by the TALS-SR, MOODS-SR lifetime version and the ProQOL R-IV. RESULTS: Approximately 60% of participants met at least one PTSD symptom criterion (criterion B, 63.4%; criterion C, 40.2%; criterion D 29.3%; criterion E, 26.8%), according to DSM-5 diagnosis. Almost sixteen percent of the sample reported a full symptomatic DSM-5 PTSD (work-related) diagnosis, and these showed significantly higher scores in all MOODS-SR depressive domains, as well as in the rhythmicity domain, compared with workers without PTSD. Further, mood-depressive and cognition-depressive MOODS-SR domains resulted to be predictive for PTSD. Significant correlations emerged between either PTSD diagnosis and criteria or ProQOL subscales and all the MOOD-SR domains. CONCLUSION: A significant association emerged among PTSD, burnout and lifetime MOOD Spectrum, particularly the depressive component, in emergency health care operators, suggesting this population should be considered at-risk and undergo regular screenings for depression and PTSD.

Exploring mood symptoms overlap in PTSD diagnosis: ICD-11 and DSM-5 criteria compared in a sample of subjects with Bipolar Disorder.

BACKGROUND: The latest edition of the ICD (ICD-11) introduced relevant modifications to Post-traumatic Stress Disorder (PTSD) diagnostic criteria with respect to those of the DSM-5, including the exclusion of DSM-5 symptoms that potentially overlapped with mood disorders. To date, no study has yet investigated the differences in PTSD and its related symptoms, according to the two diagnostic systems in subjects with mood disorders. The aim of the present study was to compare the DSM-5 and ICD-11 diagnostic criteria for PTSD in a sample of patients with Bipolar Disorder (BD). METHODS: An overall sample of 210 in-patients with BD completed the Trauma and Loss Spectrum-Self Report, assessing post-traumatic stress symptoms, to compare symptomatological PTSD diagnosis according to either the DSM-5 or the ICD-11 criteria. RESULTS: DSM-5 PTSD was detected in 41% of the whole sample, whereas ICD-11 PTSD in 31.8%. The two diagnostic systems showed good concordance (Cohen's k = 0.643), whereas the concordance of re-experiencing and arousal criteria were moderate (Cohen's k = 0.578) and good (Cohen's k = 0.791), respectively. Almost all the subjects with a diagnosis of ICD-11 PTSD (92.5%) endorsed the "negative alterations in cognitions and mood" DSM-5 criterion. LIMITATIONS: The small size, the use of a self-report instrument. CONCLUSION: Our findings show high rates of PTSD and post-traumatic stress symptoms among subjects with BD according to both DSM-5 and ICD-11 criteria, despite significantly lower with the latter. However, potentially DSM-5 mood overlapping symptoms appear to be significantly higher among bipolar patients with ICD-11 PTSD with respect to those without.

Defining the Optimal Threshold Scores for Adult Autism Subthreshold Spectrum (AdAS Spectrum) in Clinical and General Population.

BACKGROUND: The Adult Autism Subthreshold Spectrum (AdAS Spectrum) is a recently developed instrument tailored to assess the broad range of full-threshold as well as sub-threshold manifestations related to the autism spectrum. Although it has proved to be a valuable instrument for quantitative assessment of autistic symptoms, the AdAS Spectrum still lacks validated diagnostic thresholds. OBJECTIVE: The aim of this study was to define the best cut-off scores of the AdAS Spectrum for determining the presence of subthreshold autistic traits as well as a clinically significant autism spectrum disorder (ASD). METHODS: Our sample was composed of 39 patients with full-blown ASD, 73 subjects with autistic traits, and 150 healthy controls. Subjects were evaluated by trained psychiatrists, who performed a clinical diagnosis according to DSM-5 and then assessed with the AdAS Spectrum and the Autism Spectrum Quotient. RESULTS: Our results showed that the most discriminant cut-off scores were 70 for identifying subjects with full-blown ASD, and 43 for determining the presence of significant autistic traits. CONCLUSION: The threshold values proposed here showed satisfying levels of specificity and sensibility, as well as a good agreement with the diagnosis according to DSM-5 criteria, confirming the validity of the AdAS Spectrum as a psychometric tool for measuring ASD-related conditions in the clinical and general population.

Sex-Related Differences in Plasma Oxytocin Levels in Humans.

BACKGROUND: Increasing evidence supports a key role of Oxytocin (OT) as a modulator of social relationships in mammals. OBJECTIVE: The aim of the present study was to investigate possible sex-related differences in plasma OT levels in human beings. METHODS: Forty-five healthy men and 45 women (mean age: 34.9 ± 6.2 years), were included in the study. Plasma preparation, peptide extraction and OT radioimmunoassay were carried out according to standardized methods. RESULTS: The results showed that OT plasma levels (pg / ml, mean ± SD) were significantly higher in women than in men (4.53 ± 1.18 vs 1.53 ± 1.19, p ˂ 0.001). CONCLUSIONS: The present finding demonstrates sex-related differences in plasma OT levels in humans. It is tempting to hypothesize that such differences might be related to behaviours, attitudes, as well as susceptibility to stress response, resilience and social emotions specific of women and men.