Cognitive behaviour treatment of co-occurring depression and generalised anxiety in routine clinical practice

Evaluating the effects of tDCS on depressive and anxiety symptoms from a transdiagnostic perspective: a systematic review and meta-analysis of randomized controlled trials

Depressive and anxiety symptoms are prevalent among patients with various clinical conditions, resulting in diminished emotional well-being and impaired daily functioning. The neural mechanisms underlying these symptoms, particularly across different disorders, remain unclear, limiting the effectiveness of conventional treatments. Therefore, it is crucial to elucidate the neural underpinnings of depressive and anxiety symptoms and investigate novel, effective treatments across clinical conditions. Transcranial direct current stimulation (tDCS) is a neuromodulatory technique that can help understand the neural underpinnings of symptoms and facilitate the development of interventions, addressing the two research gaps at both neural and clinical levels. Thus, this systematic review and meta-analysis aims to evaluate the existing evidence regarding the therapeutic efficacy of tDCS in reducing depressive and anxiety symptoms among individuals with diverse clinical diagnoses. This review evaluated evidence from fifty-six randomized, sham-controlled trials that administered repeated tDCS sessions with a parallel design, applying a three-level meta-analytic model. tDCS targeting the left dorsolateral prefrontal cortex (DLPFC) at 2-mA intensity demonstrates moderate efficacy in alleviating depressive symptoms, identifying the left DLPFC as a transdiagnostic neural mechanism of depressive symptoms across clinical conditions. In comparison, the findings on anxiety symptoms demonstrate greater heterogeneity. tDCS over the left DLPFC is effective in reducing depressive symptoms and shows promising effects in alleviating anxiety symptoms among individuals with diverse diagnoses. These findings enhance our understanding of the neuropsychological basis of depressive and anxiety symptoms, laying the groundwork for the development of more effective tDCS interventions applicable across clinical conditions.

Developing a protocol to address co-occurring mental health conditions in the treatment of eating disorders

OBJECTIVE

While co-occurring mental health conditions are the norm in eating disorders, no testable protocol addresses management of these in psychotherapy.

METHOD

The literature on managing mental health conditions that co-occur with eating disorders is outlined and reviewed.

RESULTS

In the absence of clear evidence to inform managing co-occurring mental health conditions, we advocate for use of an iterative, session-by-session measurement to guide practice and research. We identify three data-driven treatment approaches (focus solely on the eating disorder; multiple sequential interventions either before or after the eating disorder is addressed; integrated interventions), and the indications for their use. Where a co-occurring mental health condition/s impede effective treatment of the eating disorder, and an integrated intervention is required, we outline a four-step protocol for three broad intervention approaches (alternate, modular, transdiagnostic). A research program is suggested to test the usefulness of the protocol.

DISCUSSION

Guidelines that provide a starting point to improving outcomes for people with eating disorders that can be evaluated/researched are offered in the current paper. These guidelines require further elaboration with reference to: (1) whether any difference in approach is required where the co-occurring mental health condition is a comorbid symptom or condition; (2) the place of biological treatments within these guidelines; (3) precise guidelines for selecting among the three broad intervention approaches when adapting care for co-occurring conditions; (4) optimal approaches to involving consumer input into identifying the most relevant co-occurring conditions; (5) detailed specification on how to determine which adjuncts to add.

PUBLIC SIGNIFICANCE

Most people with an eating disorder also have another diagnosis or an underlying trait (e.g., perfectionism). Currently no clear guidelines exist to guide treatment in this situation, which often results in a drift away from evidence-based techniques. This paper outlines data-driven strategies for treating eating disorders and the accompanying comorbid conditions and a research program that can test the usefulness of the different approaches suggested.

Psychological interventions for symptoms of depression among informal caregivers of older adult populations: A systematic review and meta-analysis of randomized controlled trials

BACKGROUND

Symptoms of depression are commonly experienced by informal caregivers of older adults, however there is uncertainty concerning effectiveness of psychological interventions targeting symptoms of depression in this population. Further, there is uncertainty concerning important clinical moderators, including intervention type and care recipient health condition. This review examined the effectiveness of psychological interventions targeting symptoms of depression in informal caregivers of older adults.

METHODS

PubMed, CINAHL, Embase, PsycINFO, Cochrane Library and Web of Science were searched. Risk of bias was assessed using the Cochrane Risk of Bias tool version 2.

RESULTS

Fifteen studies were identified and twelve (1270 participants) provided data for the meta-analysis. Interventions included cognitive behavioral therapy (4 studies), problem-solving therapy (4 studies); non-directive supportive therapy (4 studies) and behavioral activation (3 studies). A small effect size favouring the intervention was found for symptoms of depression (g = -0.49, CI = -0.79, -0.19, I² = 83.42 %) and interventions were effective in reducing incidence of major depression (OR = 0.177, CI = 0.08, 0.38), caregiver burden (g = -0.35, CI = -0.55, -0.15) and psychological distress (g = -0.49, CI = -0.70, -0.28). Given high heterogeneity, findings should be interpreted with caution. Overall risk of bias was high.

LIMITATIONS

Studies were limited to those in English or Swedish.

CONCLUSION

Psychological interventions may be effective in reducing symptoms of depression among informal caregivers of older adults. However, evidence is inconclusive due to heterogeneity, high risk of bias, and indirectness of evidence.

Evaluating an engaging and coach-assisted online cognitive behavioral therapy for depression among adolescent and young adult cancer survivors: A pilot feasibility trial

OBJECTIVES

Technology-assisted Cognitive Behavioral Therapy (tCBT) has significant potentials to provide engaging and accessible depression treatment for adolescents and young adults (AYAs) coping with cancer. This study evaluated the feasibility and preliminary efficacy of an engaging and tailorable tCBT - Mind Your Total Health (MYTH) - for AYA cancer survivors' depression.

METHODS

Seventeen AYAs diagnosed with cancer were randomly assigned to either the intervention (MYTH) or control group. The intervention group (n = 10) received eight weekly 30-35 minutes coach-assisted tCBT (MYTH), while the control group (n = 7) received active control, BeatingtheBlues (BtB).

RESULTS

Eight out of ten participants in the MYTH group completed at least six out of eight sessions, suggesting strong feasibility (80% completion rate) among AYAs with cancer. Efficacy outcomes indicated that participants in the MYTH group reported significant pre- and post-treatment reduction in depression, t(9) = 5.25, p < 0.001, and anxiety, t(9)=5.07, p < 0.001. Notably, participants in the MYTH group reported significantly lower post-treatment depression than participants in the BtB group, t(15) = 2.40, p < 0.05. The between-group difference reflected a significant between-group treatment effect size, d = 1.12, p < 0.05.

DISCUSSION

This engaging, tailorable, and coach-assisted tCBT intervention is promising in alleviating depression and anxiety among AYA cancer survivors. Future research needs to include larger sample size and a more diverse patient population.

Drug addiction: a curable mental disorder?

Drug addiction is a chronic, relapsing brain disorder. Multiple neural networks in the brain including the reward system (e.g., the mesocorticolimbic system), the anti-reward/stress system (e.g., the extended amygdala), and the central immune system, are involved in the development of drug addiction and relapse after withdrawal from drugs of abuse. Preclinical and clinical studies have demonstrated that it is promising to control drug addiction by pharmacologically targeting the addiction-related systems in the brain. Here we review the pharmacological targets within the dopamine system, glutamate system, trace amine system, anti-reward system, and central immune system, which are of clinical interests. Furthermore, we discuss other potential therapies, e.g., brain stimulation, behavioral treatments, and therapeutic gene modulation, which could be effective to treat drug addiction. We conclude that, although drug addiction is a complex disorder that involves complicated neural mechanisms and psychological processes, this mental disorder is treatable and may be curable by therapies such as gene modulation in the future.