Effect of citalopram on esophageal motility in healthy subjects-Implications for reflux episodes, dysphagia, and globus

Management of Refractory Functional Gastrointestinal Disorders: What Role Should Psychiatrists Have?

Currently, it has been stated that psychiatric and psychological problems are equally paramount aspects of the clinical modulation and manifestation of both the central nervous and digestive systems, which could be used to restore balance. The present narrative review aims to provide an elaborate description of the bio-psycho-social facets of refractory functional gastrointestinal disorders, psychiatrists' role, specific psychiatric approach, and the latest psychiatric and psychological perspectives on practical therapeutic management. In this respect, "psyche," "psychiatry," "psychology," "psychiatrist," "psychotropic," and "refractory functional gastrointestinal disorders" (as the keywords) were searched in relevant English publications from January 1, 1950, to March 1, 2024, in the PubMed, Web of Science, Scopus, EMBASE, Cochrane Library, and Google Scholar databases. Eventually, the narrative technique was adopted to reach a compelling story with a high level of cohesion through material synthesis. The current literature recognizes the brain-gut axis modulation as a therapeutic target for refractory functional gastrointestinal disorders and the bio-psycho-social model as an integrated framework to explain disease pathogenesis. The results also reveal some evidence to affirm the benefits of psychotropic medications and psychological therapies in refractory functional gastrointestinal disorders, even when psychiatric symptoms were absent. It seems that psychiatrists are required to pay higher levels of attention to both the assessment and treatment of patients with refractory functional gastrointestinal disorders, accompanied by educating and training practitioners who take care of these patients.

A preclinical secondary pharmacology resource illuminates target-adverse drug reaction associations of marketed drugs

In vitro secondary pharmacology assays are an important tool for predicting clinical adverse drug reactions (ADRs) of investigational drugs. We created the Secondary Pharmacology Database (SPD) by testing 1958 drugs using 200 assays to validate target-ADR associations. Compared to public and subscription resources, 95% of all and 36% of active (AC50 < 1 µM) results are unique to SPD, with bias towards higher activity in public resources. Annotating drugs with free maximal plasma concentrations, we find 684 physiologically relevant unpublished off-target activities. Furthermore, 64% of putative ADRs linked to target activity in key literature reviews are not statistically significant in SPD. Systematic analysis of all target-ADR pairs identifies several putative associations supported by publications. Finally, candidate mechanisms for known ADRs are proposed based on SPD off-target activities. Here we present a freely-available resource for benchmarking ADR predictions, explaining phenotypic activity and investigating clinical properties of marketed drugs.

Feasibility, and barriers to use escitalopram in functional gastrointestinal disorders

Background and study aims: The feasibility and barriars of escitalopram use in patients with functional gastrointestinal disorders (FGIDs) are still debated. We aimed to evaluate the feasibility, safety and efficacy and barriars of escitalopram use in managing FGIDs in the Saudi population. Patients and Methods: We included 51 patients who received escitalopram for irritable bowel syndrome (n = 26), functional heartburn (n = 10), globus sensation (n = 10) or combined disorders (n = 5). We used an irritable bowel syndrome-severity scoring system IBS-SSS), GerdQ questionnaire and Glasgow Edinburg Throat Scale (GETS) to assess disease severity change before and after treatment. Results: The median age was 33 years (25th- 75th percentiles: 29-47), and 26 (50.98%) were males. Forty-one patients experienced side effects (80.39%), but most side effects were mild. The most common side effects were drowsiness/fatigue/dizziness (54.9%), xerostomia (23.53%), nausea/vomiting (21.57%) and weight gain (17.65%). IBS-SSS was 375 (255-430) and 90 (58-205) before and after treatment, respectively (p < 0.001). GerdQ score was 12 (10-13) before treatment and 7 (6-10) after treatment (p = 0.001). GETS score before treatment was 32.5 (21-46) and after treatment became 22 (13-31) (p = 0.002). Thirty-five patients refused to take the medications, and seven patients discontinued the medication. Possible causes of the poor compliance were fear of the medications and not being convinced of taking psychiatric medications for functional disorders (n = 15). Conclusion: Escitalopram could be a safe and effective treatment for functional gastrointestinal disorders. Targeting and managing factors leading to poor compliance could further improve the treatment outcome.

Functional Chest Pain and Esophageal Hypersensitivity: A Clinical Approach

Functional chest pain, functional heartburn, and reflux hypersensitivity are 3 functional esophageal disorders defined by the Rome IV criteria. Specific criteria, combining symptoms and the results of objective testing, allow for an accurate diagnosis of these conditions. Management may include medications targeted at optimizing acid suppression or neuromodulation, as well as a host of complementary or alternative treatment options. Psychological and behavioral interventions, such as cognitive behavioral therapy and hypnotherapy, have displayed substantial benefits in the treatment of functional chest pain and functional heartburn. Acid suppression and focused neuromodulation are key evidence-based treatment options for reflux hypersensitivity.

The bitter tastant denatonium benzoate has no influence on the number of transient lower esophageal sphincter relaxations in health

BACKGROUND

Administration of a bitter compound can alter the intragastric pressure (IGP) after a meal. Additionally, a negative correlation between IGP and the number of transient lower esophageal sphincter relaxations (TLESRs) has been demonstrated. However, the effect of a bitter tastant on the number of TLESRs and subsequent reflux episodes has never been investigated and it is unclear whether bitter food items should be avoided in gastro-esophageal reflux disease. We hypothesize that bitter administration in healthy volunteers (HVs) will lead to an increase in the number of TLESRs.

METHODS

After an overnight fast, 20 female HVs (36 years [21-63]) underwent a high-resolution impedance manometry (HRiM) measurement. After placement of the HRiM probe, 0.1 ml/kg of a 10 mM denatonium benzoate solution (bitter) or an identical volume of water (placebo) was administered directly into the stomach. The number of TLESRs and reflux episodes was quantified 30 min before and 2 h after consumption of a high caloric meal.

KEY RESULTS

There was no significant difference in the number of TLESRs or reflux episodes between the bitter and placebo condition. Additionally, no differences were observed in the nature (gas or liquid) and extent of reflux events. Lower esophageal sphincter pressures dropped significantly in the first postprandial hour to start recovering slowly back to baseline values during the second postprandial hour (p < 0.0001), without any difference between both conditions.

CONCLUSIONS & INTERFERENCES

Administration of the bitter tastant denatonium benzoate has no influence on the number of TLESRs or reflux episodes.

The assessment and management of globus pharyngeus

Globus is the sensation of a foreign body in the throat. Investigation and management of patients with globus is widely variable. Most investigations yield negative results yet incur varying patient morbidity and healthcare costs, while malignancy is vanishingly rare in the absence of red flag symptoms and ear, nose and throat examination findings. History taking is key and can help to identify possible causative pathology, directing further investigations and management if necessary. Treatment of globus mainly centres on patient reassurance and counselling, and may include reflux management, neuromodulation, or speech therapy in selected cases, and treatment of any identified cause.

ESNM/ANMS Review. Diagnosis and management of globus sensation: A clinical challenge

Globus is a non-painful sensation of a tightness or a lump/foreign body in the throat that is not associated with dysphagia and may actually improve during meals. While several otorhinolaryngologic, thyroid, and esophageal disorders have been linked to globus, cause-and-effect relationships are difficult to establish. Consequently, though part of the evaluation, objective otorhinolaryngologic and esophageal testing is often negative. The presence of alarm symptoms, particularly pain, weight loss, dysphagia, or odynophagia is indications for objective testing. A diagnosis of idiopathic globus requires exclusion of pharyngeal, laryngeal, and esophageal disorders with laryngoscopy, endoscopy, high-resolution manometry, barium radiography, and/or ambulatory reflux monitoring. A trial of acid-suppressive therapy may be reasonable in the absence of alarm symptoms, especially if concurrent reflux symptoms are identified. Ablation of heterotopic gastric mucosa in the proximal esophagus has been reported to improve globus symptoms. Beyond these specific approaches, further management of idiopathic globus consists of reassurance, neuromodulators, and complementary approaches. Globus has a benign course with no long-term consequences, and the overall prognosis is good as the magnitude of symptoms may decline over time.