Endogenous melatonin and impulsivity in humans.

Objectives: This study aimed to examine the relationship between salivary melatonin levels and impulsivity in humans, as the literature has not examined this relationship in healthy individuals.

Methods: We recruited 75 participants aged 18-55 years, measuring their salivary melatonin concentrations using an enzyme immunoassay and their impulsivity using the Barratt Impulsiveness Scale (BIS) scores.

Results: The participants' salivary melatonin levels were positively correlated with impulsivity.

A Case of Ulcerative Colitis with Acute Pericarditis after Dose Escalation of Mesalazine.

Mesalazine-induced pericarditis is rare, and most cases occur at the time of treatment initiation. A 30-year-old man with ulcerative colitis who had experienced remission for 2 years with mesalazine 2,000 mg/day subsequently experienced relapse. Therefore, the mesalazine dose was increased to 4,000 mg.

[Endoscopy for the diagnosis of mast cell leukemia with refractory diarrhea: a case report].

Already a rare presentation in patients with systemic mastocytosis (SM), chronic diarrhea is even rarer in those with mast cell leukemia (MCL), a subtype of SM. We present a case to illustrate the utility of lower gastrointestinal endoscopy with histological examination in the diagnosis of MCL in a patient with chronic diarrhea. A woman in her 70s presented with persistent diarrhea.

ERCP catheter or dilator? Which is best for fistula dilation following guidewire placement in EUS-guided transhepatic biliary drainage?

Objectives: EUS-guided biliary drainage (EUS-BD) is performed after endoscopic transpapillary biliary drainage fails. Although fistula dilation is one of the most difficult steps of EUS-BD, whether an ultratapered ERCP catheter or a dilator is the best choice for fistula dilation is unclear. In this study, we aimed to identify the optimal device for fistula dilation after guidewire placement.

Corrigendum: Somatic symptoms: association among affective state, subjective body perception, and spiritual belief in Japan and Indonesia.

[This corrects the article DOI: 10.3389/fpsyg.2022.