• Issue

    Neurogastroenterology & Motility: Volume 32, Issue 12

    December 2020

ISSUE INFORMATION

Free Access

Issue Information

  • First Published: 24 November 2020

ORIGINAL ARTICLES

Avoidant/restrictive food intake disorder symptoms are frequent in patients presenting for symptoms of gastroparesis

  • First Published: 16 July 2020
Avoidant/restrictive food intake disorder symptoms are frequent in patients presenting for symptoms of gastroparesis

Avoiding foods or restricting intake can be a normative approach to manage symptoms of gastroparesis/functional dyspepsia. However, a subset of patients may have an underlying feeding/eating disorder, or be at risk for developing one. This study showed clinically significant feeding/eating disorder symptoms, particularly symptoms of avoidant/restrictive food intake disorder (ARFID), were common among outpatients presenting for gastroparesis/dyspepsia. ARFID is a feeding/eating disorder characterized by avoidant/restrictive eating not motivated by body shape/weight concerns that leads to medical and/or psychosocial consequences. Although multiple etiologic pathways are possible and require further research, clinicians may consider assessing for avoidant/restrictive eating to inform treatment recommendations.

Listen to the podcast for this article.

Open Access

Development and validation of the paediatric Carbohydrate Perception Questionnaire (pCPQ), an instrument for the assessment of carbohydrate-induced gastrointestinal symptoms in the paediatric population

  • First Published: 01 July 2020
Development and validation of the paediatric Carbohydrate Perception Questionnaire (pCPQ), an instrument for the assessment of carbohydrate-induced gastrointestinal symptoms in the paediatric population

The unbiased diagnosis of carbohydrate intolerance requires a valid recording of carbohydrate induced symptoms. The paediatric Carbohydrate Perception Questionnaire overcomes the current lack of standardized and validated symptom assessment during carbohydrate breath tests, minimizes bias and can be the basis to standardize the assessment of carbohydrate intolerance.

The timed barium swallow and its relationship to symptoms in achalasia: Analysis of surface area and emptying rate

  • First Published: 23 June 2020
The timed barium swallow and its relationship to symptoms in achalasia: Analysis of surface area and emptying rate

When interpreting the timed barium swallow image, the surface area of the residual column better reflects the adequacy of esophageal emptying compared to the column height.

Colonic motility in patients with type 1 diabetes and gastrointestinal symptoms

  • First Published: 20 July 2020
Colonic motility in patients with type 1 diabetes and gastrointestinal symptoms

Assessed with the 3D-Transit system (C), patients with diabetes had prolonged colonic transit time characterized by more retrograde movements and stasis in the cecum (A). The XY plot (B) shows the median segmental colonic transit times in the cecal and ascending colon (Asc), the transversal colon (Tra), the descending colon (Dsc) and the rectosigmoid colon (Sig) in patients with diabetes and gastrointestinal symptoms (DM) and healthy controls (HC). Whiskers marks interquartile range.

Straight leg raise metrics on high-resolution manometry associate with esophageal reflux burden

  • First Published: 06 July 2020
Straight leg raise metrics on high-resolution manometry associate with esophageal reflux burden

The straight leg raise (SLR) maneuver during high resolution manometry (HRM) increases intra-abdominal pressure that may transmit into the intra-esophageal cavity when the esophagogastric junction is disrupted. Analysis of intra-esophageal pressure gradients during the maneuver may provide adjunctive evidence supporting GERD.

High-resolution manometry features of paraesophageal hernia

  • First Published: 20 July 2020
High-resolution manometry features of paraesophageal hernia

High resolution manometry (HRM) features of paraesophageal hernia (PEH) were compared to axial hiatus hernias and normal controls, with findings of increased intraluminal intrabolus pressure in the distal esophagus and intragastric pressure with PEH, in addition to short esophageal length. These findings help raise suspicion for the presence of PEH on HRM studies

Nutrient-sensing components of the mouse stomach and the gastric ghrelin cell

  • First Published: 14 July 2020
Nutrient-sensing components of the mouse stomach and the gastric ghrelin cell

Chemosensors in the mouse stomach. Most chemosensors had higher expression in the antrum versus corpus, except for CD36, GNAT2, ghrelin, and GOAT. Chemosensors for fatty acids (FFAR4, CD36), protein (GPR93) and the sweet and umami taste receptor subunit (T1R3) were co-expressed with ghrelin.

Histone H3K9 methylation regulates chronic stress and IL-6–induced colon epithelial permeability and visceral pain

  • First Published: 02 August 2020
Histone H3K9 methylation regulates chronic stress and IL-6–induced colon epithelial permeability and visceral pain

Chronic stress increases levels of pro-inflammatory cytokines, decreases GR transcriptional binding at epithelia cell tight junction gene promoters reducing tight junction gene expression, culminating in increased paracellular permeability and enhanced visceral pain sensation. Methylation of the repressive histone H3K9me2/me3 plays a central role in this process.

Early-life malnutrition causes gastrointestinal dysmotility that is sexually dimorphic

  • First Published: 06 July 2020
Early-life malnutrition causes gastrointestinal dysmotility that is sexually dimorphic

Multiple mouse models of early postnatal malnutrition exhibit slow small bowel progression of FITC-dextran, delayed gastric emptying, and abnormal gross appearance of the stomach. Altered duodenal contractility and permeability are specific to malnourished males.

Identification of intrinsic primary afferent neurons in mouse jejunum

  • First Published: 28 September 2020
Identification of intrinsic primary afferent neurons in mouse jejunum

This is the first study to show that the gene advillin is expressed in a specific population of enteric neurons known as intrinsic primary afferent neurons (IPANs), which uniquely endow the digestive system with intrinsic neural reflex activity. The identity of advillin as a marker for IPANs is supported by morphological, neurochemical, and physiological evidence.