Improvement of depressive symptoms in patients with moderate-to-severe psoriasis treated with ustekinumab: an open label trial validated using beck depression inventory, Hamilton depression rating scale measures and 18fluorodeoxyglucose (FDG) positron emission tomography (PET)

The mind-skin connection: A narrative review exploring the link between inflammatory skin diseases and psychological stress

Inflammatory skin diseases are known to negatively impact patient psychology, with individuals experiencing higher rates of stress and subsequent diminished quality of life, as well as mental health issues including anxiety and depression. Moreover, increased psychological stress has been found to exacerbate existing inflammatory skin diseases. The association between inflammatory skin diseases and psychological stress is a timely topic, and a framework to better understand the relationship between the two that integrates available literature is needed. In this narrative review article, we discuss potential neurobiological mechanisms behind psychological stress due to inflammatory skin diseases, focusing mainly on proinflammatory cytokines in the circulating system (the brain-gut-skin communications) and the default mode network in the brain. We also discuss potential descending pathways from the brain that lead to aggravation of inflammatory skin diseases due to psychological stress, including the central and peripheral hypothalamic-pituitary-adrenal axes, peripheral nerves and the skin barrier function.

Therapeutic Effect of Dupilumab on Systemic and Vascular Inflammation in Adults with Severe Atopic Dermatitis: Feasibility Study Using 18F-Fluorodeoxyglucose Positron Emission Tomography-Computed Tomography

Atopic dermatitis (AD) is an inflammatory skin disease associated with increased systemic and vascular inflammation. Although dupilumab has been proven to be effective against severe AD, imaging studies analysing its inflammation-reducing effect have rarely been reported. The aim of this study was to evaluate the effect of dupilumab on systemic and vascular inflammation in adult patients with severe AD, using 18F-fluorodeoxyglucose positron emission tomography-computed tomography (18F-FDG PET/CT). A total of 33 adult patients with severe AD and 25 healthy controls underwent 18F-FDG PET/CT at baseline. Patients on dupilumab treatment underwent 18F-FDG PET/CT again after achieving a 75% reduction from baseline on the Eczema Area and Severity Index (EASI-75). Patients with AD exhibited increased 18F-FDG uptake values in the liver, spleen, pancreas, and carotid artery compared with healthy controls. However, compared with baseline, there was no statistically significant difference in 18F-FDG uptake in major organs and arteries after achieving EASI-75 with dupilumab treatment. In conclusion, while dupilumab treatment resulted in a significant clinical improvement and reduced serum inflammatory markers in adult patients with severe AD, no changes in systemic and vascular inflammation were observed on 18F-FDG PET/CT imaging.

Comorbidities in Psoriatic Arthritis: A Narrative Review

PURPOSE

Psoriatic arthritis (PsA) is a common type of inflammatory arthritis. Patients with PsA present with certain extra-articular manifestations and comorbidities (often collectively called psoriatic disease). The purpose of the present review was to highlight the main comorbidities in the setting of PsA.

METHODS

A narrative review was performed using data from articles found in a search of PubMed and Scopus using the terms psoriatic arthritis and comorbidities.

FINDINGS

Cardiovascular disease (CVD), as well as metabolic and mental health disorders, are the most common comorbidities in patients with PsA. In most cases, underlying inflammation seems to be involved in the increased risk for CVD in PsA, while a bidirectional relationship seems to operate between mental health disorders and psoriatic disease. The treatment of patients with PsA, especially with biologic disease-modifying antirheumatic drugs, has been shown to lead to favorable outcomes regarding the CVD risk. However, it is debatable whether specific drug classes are more effective than others or should be avoided in patients with CVD risk factors. Comorbidity of mental health disorders is even more complex, given the difficulties in measuring and reporting these comorbidities in clinical trials and in clinical practice.

IMPLICATIONS

Future studies are needed for a better understanding of the pathogenic mechanisms of, and the development of better protocols for the identification and treatment of patients with, comorbidities in patients with PsA. The education of clinicians, health care professionals in rheumatology, and patients could be useful in achieving this goal.

Biologic and Small-Molecule Therapies for Moderate-to-Severe Psoriasis: Focus on Psoriasis Comorbidities

Psoriasis is a systemic immune-mediated disease associated with an increased risk of comorbidities, such as psoriatic arthritis, cardiovascular disease, metabolic syndrome, inflammatory bowel disease, psychiatric disorders, and malignancy. In recent years, with the advent of biological agents, the efficacy and safety of psoriasis treatments have dramatically improved. Presently, tumor necrosis factor-α inhibitors, interleukin-17 inhibitors, interleukin-12/23 inhibitors, and interleukin-23 inhibitors are approved to treat moderate-to-severe psoriasis. Small-molecule inhibitors, such as apremilast and deucravacitinib, are also approved for the treatment of psoriasis. Although it is still unclear, systemic agents used to treat psoriasis also have a significant impact on its comorbidities by altering the systemic inflammatory state. Data from clinical trials and studies on the safety and efficacy of biologics and small-molecule inhibitors provide important information for the personalized care and treatment for patients with psoriasis. Notably, treatment with interleukin-17 inhibitors is associated with new-onset or exacerbations of inflammatory bowel disease. In addition, great caution needs to be taken when using tumor necrosis factor-α inhibitors in patients with psoriasis with concomitant congestive heart failure, multiple sclerosis, and malignancy. Apremilast may induce weight loss as an adverse effect, presenting also with some beneficial metabolic actions. A better understanding of the characteristics of biologics and small-molecule inhibitors in the treatment of psoriasis comorbidities can provide more definitive guidance for patients with distinct comorbidities.

Novel Pharmacological Approaches to the Treatment of Depression

Major depressive disorder is one of the most prevalent mental health disorders. Monoamine-based antidepressants were the first drugs developed to treat major depressive disorder. More recently, ketamine and other analogues were introduced as fast-acting antidepressants. Unfortunately, currently available therapeutics are inadequate; lack of efficacy, adverse effects, and risks leave patients with limited treatment options. Efforts are now focused on understanding the etiology of depression and identifying novel targets for pharmacological treatment. In this review, we discuss promising novel pharmacological targets for the treatment of major depressive disorder. Targeting receptors including N-methyl-D-aspartate receptors, peroxisome proliferator-activated receptors, G-protein-coupled receptor 39, metabotropic glutamate receptors, galanin and opioid receptors has potential antidepressant effects. Compounds targeting biological processes: inflammation, the hypothalamic-pituitary-adrenal axis, the cholesterol biosynthesis pathway, and gut microbiota have also shown therapeutic potential. Additionally, natural products including plants, herbs, and fatty acids improved depressive symptoms and behaviors. In this review, a brief history of clinically available antidepressants will be provided, with a primary focus on novel pharmaceutical approaches with promising antidepressant effects in preclinical and clinical studies.

Inflammatory versus Anti-inflammatory Profiles in Major Depressive Disorders-The Role of IL-17, IL-21, IL-23, IL-35 and Foxp3

Background: The authors of this research study intended to verify whether there are any changes in gene expression in depressed patients without coexisting inflammatory diseases for selected immune-inflammatory factors that are particularly important in autoimmune disease pathogenesis (IL-17, IL-21, IL-23, IL-35, Foxp3). Methods: The study was carried out on a group of 190 patients with depression and 100 healthy volunteers. The severity of depressive symptoms was assessed using the Hamilton Depression Scale. RT-PCR was used to evaluate mRNA expression and ELISA was used to measure protein expression of these genes. Results: The level of gene expression for IL-17, IL-21, IL-23, and IL-35 was substantially higher in the group of patients with depression compared to the control group. The mean mRNA expression of Foxp3 was considerably reduced in patients suffering from depressive disorders. There was a statistically significant correlation between the number of hospitalizations and the expression of specific inflammatory factors. Conclusions: Expression of specific inflammatory genes may be a factor in the etiopathogenesis of depressive disorders. The duration of the disease seems to be more important for the expression of the genes in question than the severity of depression. These cytokines may affect the metabolism of neurotransmitters and neuroendocrine functions in the brain as well as be a marker and a new potential therapeutic target for recurrent depressive disorders.

An update on the impact of depression on the treatment of psoriasis

Introduction: Estimates of the prevalence of comorbid depression vary, ranging from 9 and 62%. Deterioration of mental health may emerge as a result of psoriasis; however, it is theorized that depression alone may independently predispose patients to new-onset psoriasis.Areas covered: The aim of this brief review is to explore the impact of depression on psoriasis treatment.Expert opinion: The two studies that directly assess the role of depression in psoriasis treatment outcomes are important, as unaddressed depression can undermine the success of a given treatment. This may reflect the notion that depressed individuals are less likely to be adherent. Thus, it may be valuable for clinicians to not only screen for depression, but to ensure that it is adequately treated. Our knowledge of treatment preferences in psoriasis patients with comorbid depression is limited. Expanding our understanding of preferences may allow providers to better align their recommendations to ultimately increase adherence. Additionally, given that many psoriasis treatments have an impact on depression, it may be beneficial for clinicians to evaluate patients for psychiatric risk factors to optimize the treatment regimen.

Depressive, anxiety, stress, and insomnia symptoms in patients with psoriasis: a cross-sectional study

Introduction

Assessment of psychological well-being in psoriasis patients is recommended. However, studies evaluating depressive, anxiety, stress, and insomnia symptoms in Arabic patients with psoriasis are lacking.

Aim

To quantify levels of psoriasis-related depressive, anxiety, stress, and insomnia symptoms in Arabic patients with psoriasis.

Material and methods

A cross-sectional survey on patients’ demographics, disease characteristics, and psychological measures using the Patient Health Questionnaire-9, Generalized Anxiety Disorder 7-item scale, Depression Anxiety Stress Scale-21 (7-item stress subscale), and Insomnia Severity Index. The prevalence and scores of depressive, anxiety, stress, and insomnia symptoms were calculated. Multivariate linear regression models were developed to assess patients’ demographics and disease characteristics affecting the psychological measures.

Results

The analysis included 223 patients. The patients reported mild levels of depressive, anxiety, and insomnia symptoms (median (interquartile range (IQR)) scores: 9 (6–14), 6 (4–11), and 12 (4–18), respectively) and a moderate level of stress symptoms (median (IQR) score: 10 (5–14)). The prevalence of depressive, anxiety, stress, and insomnia symptoms were 47.1%, 32.7%, 59.6%, and 57%, respectively. Multivariate linear regression analyses revealed that for each unit increase in the impact of psoriasis on daily life, there were 5.7 (95% confidence intervals (CI): 3.7–7.8), 3.8 (95% CI: 1.8–5.7), 5.3 (95% CI: 3.1–7.4), and 6.5 (95% CI: 3.7–9.4) units increase in depression, anxiety, and stress, and insomnia scores, respectively.

Conclusions

The prevalence of depressive, anxiety, stress, and insomnia symptoms in Arabic patients with psoriasis was high. Clinical interventions, screening for psychiatric comorbidities, and consideration of psychotherapy should be implemented in this patient group.

Psychological Distress, Alexithymia and Alcohol Misuse in Patients with Psoriasis: A Cross-Sectional Study

This study investigates (a) the prevalence of psychological distress, alexithymia and alcohol misuse in psoriasis patients; and (b) the relationship between psoriasis severity, alexithymia, alcohol and psychological distress in patients with psoriasis. A cross-sectional study was conducted. Outpatients (n = 184) with moderate to severe psoriasis completed a psychological screening battery. Measures included the Hospital Anxiety and Depression Scale, the Penn State Worry Questionnaire, the twenty-item Toronto Alexithymia Scale, the Dermatology Life Quality Index, the Psoriasis Area and Severity Index, the Self-Administered Psoriasis Area and Severity Index, and the Alcohol Use Disorders Identification Test. Demographic, clinical details and information on knowledge of psychosocial issues, alcohol and confidence on coping with distress and talking to others about psoriasis was also gathered. Alexithymia was associated with anxiety, depression and worry; subjective psoriasis severity was associated with worry. Alcohol misuse was related to anxiety and worry, but not to depression. Appropriate identification and treatment of alcohol difficulties and psychological distress of patients with psoriasis is needed.