Critical considerations for co-administering rivaroxaban and vonoprazan: Unveiling potential pharmacokinetic interactions.

To study the effects of metabolic enzyme activity inhibition and genetic polymorphisms on the pharmacokinetics and pharmacodynamics of rivaroxaban, we established an in vitro enzymatic reaction system to screen for inhibitors, and used the UPLC-MS/MS method to detect the levels of rivaroxaban and its metabolite M2-1. Additionally, in vivo pharmacokinetic-pharmacodynamic studies were conducted using Sprague-Dawley rats. Human recombinant CYP2J2 baculosomes were prepared using a baculovirus-insect expression system to investigate the impact of genetic polymorphisms on rivaroxaban metabolism through enzyme kinetics methods.

Endoscopic retrograde appendicitis therapy for management of chronic fecalith appendicitis.

Background And Aims: Chronic appendicitis is a condition with chronic abdominal pain or mild attacks of appendicitis, seriously affecting the patient's quality of life. Endoscopic retrograde appendicitis therapy (ERAT) has emerged as a promising, non-invasive treatment for acute uncomplicated appendicitis. Here, we aim to assess the safety and efficacy of ERAT for chronic fecalith appendicitis.

Repeat Peroral Endoscopic Myotomy: Technical Difficulty and Risk Factors.

Background And Aims: Repeat peroral endoscopic myotomy (Re-POEM) appeared to be a promising salvage option for patients with persistent/recurrent symptoms after initial POEM, but it may be more technical challenging. Here we aim to evaluate the safety and technical difficulty of Re-POEM.

Methods: Between July 2012 and October 2023, 158 achalasia patients underwent Re-POEM were retrospectively enrolled.

Discovery and Enzyme Kinetic Characterization of Novel CYP2D6 Variants.

Cytochrome P450 2D6 (CYP2D6) exhibits rich genetic polymorphism, and functional changes caused by variations are the key reasons for differences in substrate drug systemic exposure. Discovering novel variants and defining their enzymatic kinetic characteristics can contribute to the personalized application of drugs. In this study, a data chain of variant-function-structure was established through population-based sequencing, baculovirus insect cell expression, enzymatic incubation, and ultrahigh performance liquid chromatography tandem mass spectrometry.

Activity Variations of CYP2B6 Determine the Metabolic Stratification of Efavirenz.

Purpose: To investigate the effects of hepatic enzyme activity variations and CYP2B6 gene polymorphisms on the and metabolism of efavirenz.

Main Methods: In vitro enzyme systems using rat and human liver microsomes (RLM/HLM) were established, with in vivo studies conducted on Sprague-Dawley rats. Metabolite detection was performed via LC-MS/MS.

[Prevalence of dentinal hypersensitivity and related factors in Chinese urban adults].

To assess the prevalence of dentinal hypersensitivity (DH) and related factors in urban adults in China. The study was designed as an observational, cross-sectional epidemiological study carried out in adults aged 18-69 years old in seven cities (Beijing, Shanghai, Wuhan, Chengdu, Xi'an, Guangzhou, and Harbin) of China. The study was conducted from March 2021 to May 2023.

Endoscopic resection for calcifying fibrous tumors of the gastrointestinal tract.

Background: Calcifying fibrous tumors (CFTs) are rare mesenchymal lesions that can occur in various sites throughout the body, including the tubular gastrointestinal (GI) tract.

Aim: To analyze the clinical findings of 36 patients with GI tract CFTs to provide guidance for diagnosis and treatment.

Methods: This retrospective study included 36 patients diagnosed with CFTs of the GI tract.

Postbiotics in colorectal cancer: intervention mechanisms and perspectives.

Colorectal cancer (CRC) is a common malignancy affecting the gastrointestinal tract worldwide. The etiology and progression of CRC are related to factors such as environmental influences, dietary structure, and genetic susceptibility. Intestinal microbiota can influence the integrity of the intestinal mucosal barrier and modulate intestinal immunity by secreting various metabolites.

Long-term outcomes of endoscopic resection for well-differentiated nonampullary duodenal neuroendocrine tumors.

Background And Aims: Nonampullary duodenal neuroendocrine tumors (NAD-NETs) are rare, with limited evidence regarding endoscopic treatment. This study investigated the efficacy and safety of endoscopic resection of well-differentiated NAD-NETs and evaluated long-term outcomes, including local recurrence and metastasis.

Methods: Seventy-eight patients with NAD-NETs who underwent endoscopic resection between January 2011 and August 2022 were included.

The efficacy of full-thickness endoscopic resection of subepithelial tumors in the gastric cardia.

Background: Gastric subepithelial tumors (SETs) may harbor potential malignancy. Although it is well recognized that large SETs should be resected, the precise treatment strategy remains controversial. Compared to surgical resection, endoscopic resection (ER) has many advantages; however, ER of SETs in the cardia is challenging.

Feasibility and safety of endoscopic resection for the jejunoileal lesions.

Background: Endoscopic resection (ER) for jejunoileal lesions (JILs) has been technically challenging. We aimed to characterize the clinicopathologic characteristics, feasibility, and safety of ER for JILs.

Method: We retrospectively investigated 52 patients with JILs who underwent ER from January 2012 to February 2022.

[Progress in the application of laparoscopic and endoscopic cooperative surgery in gastrointestinal stromal tumors].

Gastrointestinal stromal tumor (GIST) is the most common mesenchymal tumor among gastrointestinal tumors, with an inherent potential for malignancy. The primary approach to addressing GIST remains surgical intervention. Laparoscopic and endoscopic cooperative surgery (LECS) has emerged as an innovative treatment approach for GIST.

Management of delayed bleeding of upper gastrointestinal endoscopic submucosal tunneling procedures: a retrospective single-center analysis and brief meta-analysis.

Objectives: Delayed bleeding is a rare but important major adverse event (mAE) after endoscopic submucosal tunneling procedures (ESTP), which is scarcely reported. We aimed to characterize the clinical characteristics of delayed bleeding and provide better management of this mAE.

Method: From August 2010 to October 2022, we reviewed 3852 patients with achalasia receiving peroral endoscopic myotomy (POEM) and 1937 patients with upper gastrointestinal tumors receiving submucosal tunneling endoscopic resection (STER).

DNAzyme-based faithful probing and pulldown to identify candidate biomarkers of low abundance.

Biomarker discovery is essential for the understanding, diagnosis, targeted therapy and prognosis assessment of malignant diseases. However, it remains a huge challenge due to the lack of sensitive methods to identify disease-specific rare molecules. Here we present MORAC, molecular recognition based on affinity and catalysis, which enables the effective identification of candidate biomarkers with low abundance.

Landscape of Psychological Profiles in Patients With Esophageal Achalasia.

Introduction: Esophageal achalasia (EA) is a chronic esophageal dysmotility disease, of which psychological distress was poorly understood. This study aims to assess the status of psychosocial characteristics in EA and to determine the relationship between psychological distress and EA.

Methods: Seventy pairs of age and gender-matched patients with EA and healthy control individuals were prospectively enrolled from December 2019 to April 2020 at our hospital.

Enzymatic activity of 38 CYP2C9 genotypes on ibuprofen.

Background And Objective: Ibuprofen, a common non-steroidal anti-inflammatory drug, is used clinically for pain relief and antipyretic treatment worldwide. However, regular or long-term use of ibuprofen may lead to a series of adverse reactions, including gastrointestinal bleeding, hypertension and kidney injury. Previous studies have shown that CYP2C9 gene polymorphism plays an important role in the elimination of various drugs, which leads to the variation in drug efficacy.

Efficacy of image-enhanced endoscopy for colorectal adenoma detection: A multicenter, randomized trial.

Background: Improved adenoma detection at colonoscopy has decreased the risk of developing colorectal cancer. However, whether image-enhanced endoscopy (IEE) further improves the adenoma detection rate (ADR) is controversial.

Aim: To compare IEE with white-light imaging (WLI) endoscopy for the detection and identification of colorectal adenoma.

Muscular injury as an independent risk factor for esophageal stenosis after endoscopic submucosal dissection of esophageal squamous cell cancer.

Background And Aims: Stenosis after esophageal endoscopic submucosal dissection (ESD) has a high incidence, and muscular injury is an important risk factor for esophageal stenosis. Hence, this study aimed to classify muscular injury degrees and investigate their association with postoperative stenosis.

Methods: This retrospective study included 1033 patients with esophageal mucosal lesions treated with ESD between August 2015 and March 2021.

Salvage peroral endoscopic myotomy is a promising treatment for achalasia after myotomy failure.

Background And Aims: Reintervention modalities after myotomy failure in achalasia patients have yet to be established. The efficacy and safety of salvage peroral endoscopic myotomy (POEM) for treatment of achalasia after myotomy failure were evaluated in the study.

Methods: Between August 2011 and August 2021 at the Endoscopy Center of Zhongshan Hospital, 219 achalasia patients who had previously undergone a myotomy underwent a salvage POEM and were thus retrospectively enrolled in this study.

Endoscopic resection and suturing methods for non-ampullary duodenal submucosal tumors: "mini-invasive" treatments that should never be underestimated.

Objective: To evaluate the effectiveness and safety of endoscopic resection and various suturing methods to treat non-ampullary duodenal submucosal tumors (NAD-SMTs).

Design: We performed a retrospective observational study of patients with NAD-SMTs who underwent endoscopic resection at Zhongshan Hospital, Fudan University, China, between June 2017 and December 2020. Data on patient characteristics, treatments and follow-up results were collected.

Porphyromonas gingivalis predicts local recurrence after endoscopic submucosal dissection of early esophageal squamous cell carcinoma or precancerous lesion.

Background: Porphyromonas gingivalis plays an oncogenic role in development and progression of esophageal squamous cell carcinoma (ESCC). However, the impact of P. gingivalis on local recurrence of early ESCC or precancerous lesion after ESD treatment remains unknown.