• Issue

    Neurogastroenterology & Motility: Volume 33, Issue 7

    July 2021

ISSUE INFORMATION

Free Access

Issue Information

  • First Published: 16 July 2021

REVIEWS

Open Access

Translating the seminal findings of Carl Lüderitz: A description in English of his extraordinary studies of gastrointestinal motility accompanied by a historical view of peristalsis

  • First Published: 11 October 2020
Translating the seminal findings of Carl Lüderitz: A description in English of his extraordinary studies of gastrointestinal motility accompanied by a historical view of peristalsis

The painting from Elisabeth Lüderitz shows Dr. Carl Lüderitz standing to the right. Carl Lüderitz provided the first comprehensive description of peristalsis in 1889, 10 years before Bayliss and Starling described the peristaltic reflex. At that time, the peristaltic reflex was referred to as the Lüderitz–Bayliss–Starling reflex. This review provides a short biography of Dr. Carl Lüderitz, a translation of his 1889 paper, honors his contributions, and reviews the history of peristalsis.

ORIGINAL ARTICLES

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

  • First Published: 29 December 2020
The bitter tastant denatonium benzoate has no influence on the number of transient lower esophageal sphincter relaxations in health

The number of transient lower esophageal sphincter relaxations was not different between the bitter and placebo condition.

Novel gel bolus to improve impedance-based measurements of esophageal cross-sectional area during primary peristalsis

  • First Published: 29 December 2020
Novel gel bolus to improve impedance-based measurements of esophageal cross-sectional area during primary peristalsis

Use of conductive swallow gel for esophageal impedance-manometry (HRMZ) procedure allows for more accurate readings of distension/CSA. Gel keeps the air out of the bolus better than the saline during swallow, which allows for clear impedance signals.

Gastrointestinal medication burden among persons with the Ehlers-Danlos syndromes

  • First Published: 03 January 2021
Gastrointestinal medication burden among persons with the Ehlers-Danlos syndromes

44% of women and 25.3% of men with EDS had prescription claims for at least one class of GI drugs compared with 19.2% and 9.6% of controls, respectively (P < .0001). Note the peripubertal increase in GI prescriptions among women with EDS, which adds to the evidence of worsening EDS disease burden among peripubertal females, as well as a critical time window for future research.

Neurons populating the rectal extrinsic nerves in humans express neuronal and Schwann cell markers

  • First Published: 31 December 2020
Neurons populating the rectal extrinsic nerves in humans express neuronal and Schwann cell markers

In this paper, we describe double-labeled neurons in the distal human GI tract suggesting a SC origin of enteric neurons as has been shown in rodents.

Esophageal pH increments associated with post-reflux swallow-induced peristaltic waves show the occurrence and relevance of esophago-salivary reflex in clinical setting

  • First Published: 20 January 2021
Esophageal pH increments associated with post-reflux swallow-induced peristaltic waves show the occurrence and relevance of esophago-salivary reflex in clinical setting

Remarkable increments of esophageal pH (∆pH) were found to be associated with post-reflux swallow-induced peristaltic waves (PSPWs), showing the occurrence of esophago-salivary reflex in clinical setting. PSPW-associated ∆pH was significantly lower in PPI-refractory than in PPI-responsive reflux-related heartburn, representing a predictor of PPI response.

Open Access

A randomized double-blind placebo-controlled crossover pilot study: Acute effects of the enzyme α-galactosidase on gastrointestinal symptoms in irritable bowel syndrome patients

  • First Published: 22 February 2021
A randomized double-blind placebo-controlled crossover pilot study: Acute effects of the enzyme α-galactosidase on gastrointestinal symptoms in irritable bowel syndrome patients

The use of α-galactosidase together with meals high in oligosaccharides was in this pilot study not superior to placebo in reducing postprandial gas or other gastrointestinal symptoms or the concentration of hydrogen in expired air in adult IBS subjects.

Motor patterns in the proximal and distal mouse colon which underlie formation and propulsion of feces

  • First Published: 15 February 2021
Motor patterns in the proximal and distal mouse colon which underlie formation and propulsion of feces

Simultaneous video imaging of colonic wall movements with two site electrophysiological recordings along the isolated whole mouse colon. Two distinct patterns of propagating neurogenic motor activity can be recorded with different velocities in an empty colon.

Different responses of the blockade of the P2Y1 receptor with BPTU in human and porcine intestinal tissues and in cell cultures

  • First Published: 22 February 2021
Different responses of the blockade of the P2Y1 receptor with BPTU in human and porcine intestinal tissues and in cell cultures

In this study, pharmacological properties of different orthosteric (MRS2179, MRS2279, MRS2500) and allosteric (BPTU) blockers have been tested in human and porcine intestinal tissues and in cell cultures. The picture describes the pathway involved in smooth muscle relaxation.

Open Access

Region-specific effects of the cysteine protease papain on gastric motility

  • First Published: 12 March 2021
Region-specific effects of the cysteine protease papain on gastric motility

Papain, a cysteine-protease of papaya has region-specific effects on gastric motility, which is dependent on its enzymatic activity. Based on these findings papain may be beneficial in functional dyspepsia.