The impact of gastrointestinal conditions on psychosocial factors associated with the biopsychosocial model of health: A scoping review

Unmet needs of drugs for irritable bowel syndrome and inflammatory bowel diseases: interest of vagus nerve stimulation and hypnosis

The gut and the brain communicate bidirectionally through the autonomic nervous system. The vagus nerve is a key component of this gut-brain axis, and has numerous properties such as anti-inflammatory, antinociceptive, anti-depressive effects. A perturbation of this gut-brain communication is involved in the pathogeny of functional digestive disorders, such as irritable bowel syndrome, and inflammatory bowel diseases. Stress plays a role in the pathogeny of these diseases, which are biopsychosocial models. There are presently unmet needs of pharmacological treatments of these chronic debilitating diseases. Treatments are not devoid of side effects, cost-effective, do not cure the diseases, can lose effects over time, thus explaining the poor satisfaction of patients, their lack of compliance, and their interest for non-drug therapies. The gut-brain axis can be targeted for therapeutic purposes in irritable bowel syndrome and inflammatory bowel disease through non-drug therapies, such as hypnosis and vagus nerve stimulation, opening up possibilities for responding to patient expectations.

Inflammation as an aetiological trigger for depressive symptoms in a prospective cohort of patients with inflammatory bowel disease

OBJECTIVE

Inflammatory bowel disease (IBD) is often comorbid with mood disorders and depressive symptoms. The aetiology of depressive symptoms in IBD, however, remains largely unknown. Consistent with the inflammatory hypothesis of depression, the aim of this study was to explore the prospective associations between inflammatory biomarkers and depressive symptoms in a cohort of IBD patients with and without a previous clinical diagnosis of mood disorder.

METHOD

IBD clinical activity was determined using the Harvey-Bradshaw Index for CD and the Partial Mayo score for UC; serum C-reactive protein (CRP) and faecal calprotectin (fCAL) were used as biomarkers of systemic and intestinal inflammation, respectively. Participants were administered the Hospital Anxiety and Depression Scale-depression (HADS-D) at baseline and 1-year follow-up.

RESULTS

Eighty-four participants (50 ± 16 years; 75% UC and 25% CD) were included in the main analyses. Longitudinal moderated regression models showed that baseline CRP significantly predicted follow-up HADS-D scores among individuals with a previous mood disorder diagnosis (β = 0.843, p < .001), but not among individuals without (β = -0.013, p = .896), after controlling for baseline HADS-D scores, body mass index, IBD phenotype, sex, and perceived stress. Likely due to lower power, results on FCAL (n = 31) were not statistically significant.

CONCLUSION

This study suggests that IBD patients with previous diagnosis of mood disorder may be at higher risk of inflammation-related depressive symptoms.

Construction of identity in individuals with inflammatory bowel disease across the lifespan

Inflammatory bowel disease (IBD) is a chronic illness that affects 10 million individuals worldwide; however, Canada has the highest rates of IBD per capita in the world. Presently, 0.7% of Canadians are diagnosed with IBD, which is expected to rise to 1% by 2030. Disease onset is typically between the ages of 15-45 years old. This is a crucial period for identity development and growth; however, IBD symptoms often disrupt these processes and cause individuals to abandon or reconstruct parts of their identity. As a result, changes in individuals' life plans and health status may cause them to grieve their former pre-IBD identities. In this qualitative narrative study, we captured the lived experiences of IBD, with a focus on what individuals have lost, gained, or accomplished across various avenues (e.g. relationships, education, and future scripts). Thirteen participants constructed IBD narratives using a holistic-form narrative approach, a method that captures various plot formulations and discourses that emerge through storytelling. We found three main plotlines: The 'journey to acceptance', which detailed a route to acceptance wherein individuals integrated IBD into their identity, 'the ambivalent story', which exemplified individuals who were unsure of IBD and the resulting impacts of the diagnosis on their identity, and 'the grief story', which outlined grief and loss surrounding one's pre-IBD self. These results illuminate the role of narrative in shaping meaning-making and identity processes over the life course. We urge future researchers to explore narrative inquiry as a route to further understand the integration of IBD into one's life story/identity.