Insomnia among Cancer Patients in the Real World: Optimising Treatments and Tailored Therapies.

BACKGROUND: Insomnia is commonly reported by cancer patients. Its multifaceted pathophysiology makes this symptom a complex challenge for the clinician, who should bear in mind the manifold world of causes and consequences of sleep disturbances in these patients and the importance of accurate treatment that should consider the frequent co-prescription of multiple medications. With our work, we aim to provide a tool to better master the treatment of this symptom in cancer patients, considering the gap between clinical and pharmacodynamic knowledge about the efficacy of different molecules and evidence-based prescribing. METHODS: A narrative review of the studies investigating the pharmacological treatment of insomnia in cancer patients was conducted. Three hundred and seventy-six randomised controlled trials (RCTs), systematic reviews and meta-analyses were identified through PubMed. Only publications that investigated the efficacy of the pharmacological treatment of insomnia symptoms in cancer patient were considered. RESULTS: Among the 376 publications that were individuated, fifteen studies were eligible for inclusion in the review and were described. Pharmacological treatments were outlined, with a broad look at specific clinical situations. CONCLUSIONS: The management of insomnia in cancer patients should be personalised, as is already the case for the treatment of pain, taking into account both the pathophysiology and the other medical treatments prescribed to these patients.

Abnormal resting state functional connectivity of the periaqueductal grey in patients with fibromyalgia.

OBJECTIVES: Emerging evidence associates chronic pain syndrome, such as fibromyalgia, with endogenous pain modulatory system dysfunction, leading to an impaired descending pain inhibition. In this study, using resting-state functional magnetic resonance imaging (fMRI), we aimed at seeking possible functional connectivity changes of the periaqueductal gray (PAG), a brainstem area that belongs to the endogenous pain modulatory system, in patients with fibromyalgia. METHODS: In 20 patients with fibromyalgia and 15 healthy subjects, we investigated PAG functional connectivity using resting-state fMRI. We also analysed the correlation between clinical variables, such as pain severity, disease duration, and depressive personality traits with PAG functional connectivity. RESULTS: Compared with control subjects, we identified that patients with fibromyalgia had an increased PAG connectivity with insula, anterior cingulate cortex, and anterior prefrontal cortex. The functional connectivity between PAG and the rostral ventral medulla, however, was not concordantly increased. PAG functional connectivity correlated with pain severity, disease duration, and the depressive personality trait rating. CONCLUSIONS: Our fMRI study showing abnormal resting state functional connectivity of the PAG suggests that patients with fibromyalgia have an endogenous pain modulatory system dysfunction, possibly causing an impaired descending pain inhibition. This abnormal PAG functioning might underlay the chronic pain these patients suffer from.

Attachment style and immunity: a 1-year longitudinal study.

Previous cross-sectional studies suggested an association between attachment-related avoidance and altered immune function. We aimed at testing this hypothesis with longitudinal data. A random sample of 65 female nurses provided a blood sample and completed measures of perceived stress, social support, alexithymia, and attachment style. Immune assays included lymphocyte proliferative response (LPR) to Phytohemagglutinin and NK cell cytotoxicity (NKCC). State measures (perceived stress and support) and immune measures were collected again after 4, 8, and 12 months. Linear mixed effects models were used to examine the relationship between attachment and immunity. While low to moderate levels of attachment-related avoidance were not associated with NKCC, there was a significant negative association (beta -.35; p=.005) between high levels of avoidance and NKCC. No association was observed between NKCC and attachment-related anxiety, and between LPR and both attachment dimensions. While our findings should be interpreted with caution due to study limitations such as the relatively small sample size and the inclusion of only female participants, they corroborate the notion that attachment is linked to physiology and health.

Treatment with ß-blockers and incidence of post-traumatic stress disorder after cardiac surgery: a prospective observational study.

OBJECTIVE: The aim was to investigate perioperative factors associated with the development of post-traumatic stress disorder (PTSD) in patients who underwent cardiac surgery. DESIGN: Prospective observational study. SETTING: Single academic center. PARTICIPANTS: One hundred twenty-eight consecutive patients scheduled for elective cardiac surgery with cardiopulmonary bypass. INTERVENTIONS: Patients were interviewed within the surgical unit 1 to 3 days before cardiac surgery. MEASUREMENTS AND MAIN RESULTS: Six months after surgery, participants were mailed the modified version of the Posttraumatic Stress Symptom Inventory 10. Of the 71 patients who completed the questionnaire and mailed it back at follow-up, 14 (19.7%) received a diagnosis of PTSD. Seven of 13 female patients who were not treated with ß-blockers received a diagnosis of PTSD compared with 0 of 12 who were treated with ß-blockers (p = 0.005, Fisher exact test). In a general linear model, including sex and ß-blocker treatment as predictors, the Posttraumatic Stress Symptom Inventory 10 score was significantly predicted by ß-blockade (F = 4.74, p = 0.033), with a significant interaction between sex and ß-blockade (F = 9.72, p = 0.003). CONCLUSIONS: These findings suggest that the use of ß-blockers might be protective against the development of PTSD in women after cardiac surgery.

The relationship between alexithymia and circulating cytokine levels in subjects undergoing upper endoscopy.

OBJECTIVE: Despite emerging evidence suggesting a link between alexithymia and immune function, previous studies yielded contrasting results. The proposed link between alexithymia and immune function remains controversial as does the role, in this relationship, of anxiety, depression and subjective stress. The aim of the study is to investigate the possible association between alexithymia and circulating levels of cytokines in subjects awaiting an upper endoscopy, a stressful procedure, controlling for anxiety levels, depression and subjective stress. METHODS: Participants were recruited from among consecutive patients referred for routine diagnostic upper endoscopy. All participants completed the Toronto Alexithymia Scale (TAS-20), the Hospital Anxiety and Depression Scale, and the Stress-related Vulnerability Scale. Serum levels of IL-1ß, IL-4, IL-6, IL-10, TNF-α and IFN-γ were measured by ELISA. RESULTS: Of the 90 subjects initially approached, 68 completed the study. The TAS-20 identified 22 alexithymic and 36 non-alexithymic patients. ELISA detected significantly lower IL-4 and IL-6 concentrations in alexithymic than in non-alexithymic patients. According to multiple linear regression analysis, alexithymia predicted low IL-4 and IL-6 levels in the sample overall, independently of stress, anxiety, depression and other possible confounders. No between-group differences were found in serum levels of IFN-γ, IL-1ß, and TNF-α. CONCLUSION: These findings argue against an isolated shift towards pro-inflammatory or anti-inflammatory mediators and suggest that circulating cytokine profiles differ in alexithymic and non-alexithymic subjects.

Attachment security and immunity in healthy women.

BACKGROUND: Attachment security is associated with health and possibly autonomic and endocrine reactivity to stress, however the relationship between attachment style and immune function has not yet been investigated. METHODS: A random sample of 61 female nurses provided a blood sample and completed the Perceived Stress Scale, the Multidimensional Scale of Perceived Social Support, the 20-item Toronto Alexithymia Scale, and the Experiences in Close Relationships questionnaire. Immune measures included immunophenotypic analysis, lymphocyte proliferative response to Phytohemagglutinin, and NK cell cytotoxicity (NKCC). Statistical analysis focused on the relationship between attachment-related anxiety or avoidance and immune measures. Multiple regression was used to control for perceived stress and support, alexithymia, health-related behaviors possibly influencing immunity, and use of anti-inflammatory drugs, tobacco or alcohol. RESULTS: Attachment-related anxiety was not associated with any immune parameter. Attachment-related avoidance was associated with lower NKCC. This association was independent from the number of circulating NK cells, which suggests a change in cell functionality. Perceived stress was also associated with lower NKCC. CONCLUSIONS: This study suggests a link between attachment security and immunity. While our findings should be interpreted with great caution and need replication, they are consistent with previous work suggesting that insecure attachment may be a risk factor for health and may relate to biological processes relevant to health.