A disintegrin and metallopeptidase domain (ADAM) 12, ADAM 17 mRNA and ADAM10 protein hold potential as biomarkers for detection of early gastric cancer.

No biomarker can effectively screen for early gastric cancer (EGC). Players in the A disintegrin and metalloproteinase (ADAM)-natural killer group 2 member D (NKG2D) receptor axis may have a role for that. As a proof-of-concept pilot study, the expression of ADAM8, ADAM9, ADAM10, ADAM12, ADAM17, and major histocompatibility complex (MHC) class I chain-related sequence A (MICA), a ligand for NKG2D, in gastric cancer was investigated in silico using The Cancer Genome Atlas (TCGA) database.

Interaction between the Gene and Nutritional Factors on NAFLD Development: The Korean Genome and Epidemiology Study.

Genetic and nutritional factors contribute to the development of non-alcoholic fatty liver disease (NAFLD); however, gene-diet interactions in NAFLD development are poorly understood. In this case-control study, a large dataset from the Korean Genome and Epidemiology Study cohort ( = 72,299) comprising genomic data, medical records, social history, and dietary data was used. We investigated the interactions between the rs738409 genotype and nutritional factors and their possible effect on the risk of NAFLD development in 2950 patients with NAFLD and 12,907 controls.

Lung- and liver-dominant phenotypes of Korean eight constitution medicine have different profiles of genotype associated with each organ function.

Eight Constitution Medicine (ECM), a ramification of traditional Korean medicine, has categorized people into eight constitutions. The main criteria of classification are inherited differences or predominance in the functions of organs, such as the liver or lung, diagnosed through ECM-specific pulse patterns. This study investigated the association between single nucleotide polymorphism (SNP) genotypes and ECM phenotypes and explored candidate genetic makeups responsible for each constitution using a genome-wide association study (GWAS).

Downregulation of Promotes Cell Growth and Motility in Human Gastric Cancer.

Gastric cancer is a common tumor, with a high mortality rate. The severity of gastric cancer is assessed by TNM staging. Long noncoding RNAs (lncRNAs) play a role in cancer treatment; investigating the clinical significance of novel biomarkers associated with TNM staging, such as lncRNAs, is important.

Vitamin D and Exercise Are Major Determinants of Natural Killer Cell Activity, Which Is Age- and Gender-Specific.

Background: The coronavirus-19 disease (COVID-19) pandemic reminds us of the importance of immune function, even in immunologically normal individuals. Multiple lifestyle factors are known to influence the immune function.

Objective: The aim was to investigate the association between NK cell activity (NKA) and multiple factors including vitamin D, physical exercise, age, and gender.

Reactive oxygen species-induced activation of Yes-associated protein-1 through the c-Myc pathway is a therapeutic target in hepatocellular carcinoma.

Background: The Hippo signaling pathway regulates organ size by regulating cell proliferation and apoptosis with terminal effectors including Yes-associated protein-1 (YAP-1). Dysregulation in Hippo pathway has been proposed as one of the therapeutic targets in hepatocarcinogenesis. The levels of reactive oxygen species (ROS) increase during the progression from early to advanced hepatocellular carcinoma (HCC).

A Disintegrin and Metalloproteinase 9 (ADAM9) in Advanced Hepatocellular Carcinoma and Their Role as a Biomarker During Hepatocellular Carcinoma Immunotherapy.

The chemotherapeutics sorafenib and regorafenib inhibit shedding of MHC class I-related chain A (MICA) from hepatocellular carcinoma (HCC) cells by suppressing a disintegrin and metalloprotease 9 (ADAM9). MICA is a ligand for natural killer (NK) group 2 member D (NKG2D) and is expressed on tumor cells to elicit attack by NK cells. This study measured mRNA levels in blood samples of advanced HCC patients ( = 10).

Natural Killer Cell Therapy: A New Treatment Paradigm for Solid Tumors.

In treatments of solid tumors, adoptive transfer of ex vivo expanded natural killer (NK) cells has dawned as a new paradigm. Compared with cytotoxic T lymphocytes, NK cells take a unique position targeting tumor cells that evade the host immune surveillance by down-regulating self-antigen presentation. Recent findings highlighted that NK cells can even target cancer stem cells.

There might be a distinctive clinical phenotype of constipation with non-cardiac chest pain which responds to combination laxatives: A retrospective, longitudinal symptom analysis.

Proton pump inhibitor (PPI)-refractory non-cardiac chest pain (NCCP) is often resolved when constipation was relieved. This study aimed to investigate the clinical features of patients with both NCCP and constipated functional bowel disorders (FBD).Among 692 consecutive patients diagnosed with functional constipation or irritable bowel syndrome with constipation and underwent anorectal manometry (ARM) in our hospital, PPI-refractory NCCP was present in 37.

Effects of Helicobacter pylori eradication for metachronous gastric cancer prevention: a randomized controlled trial.

Background And Aims: Whether eradication of Helicobacter pylori reduces the incidence of metachronous gastric cancer (MGC) is still debatable. We aimed to evaluate the long-term effect of H pylori eradication on the development of MGC after endoscopic gastric tumor resection.

Methods: We undertook an open-label, prospective, randomized controlled trial at a tertiary hospital in Seoul, Korea.

Clinical efficacy of endoscopic ultrasonography for decision of treatment strategy of gastric cancer.

Background: Accurate preoperative tumor staging of gastric cancer is indispensable with expansion of indications for laparoscopic surgery and endoscopic resection. It is important to distinguish mucosal cancer (T1a) in smaller lesion and differentiate early gastric cancer (EGC) in larger lesion considering endoscopic resection indication and laparoscopic surgery indication. We evaluated the clinical outcomes of endoscopic ultrasonography (EUS) for the decision of treatment strategy of gastric cancer compared with pathological staging.

Continuous Use of Thienopyridine May Be as Safe as Low-Dose Aspirin in Endoscopic Resection of Gastric Tumors.

Background/aims: Current guidelines recommend withholding antiplatelets for 5-7 days before high-risk endoscopic procedures. We investigated whether this reduces post-endoscopic submucosal dissection (ESD) bleeding.

Methods: Gastric ESD cases with antiplatelets were retorospectively reviewed.

Long-Term Effects of Eradication on Metachronous Gastric Cancer Development.

Background/aims: Gastric mucosal atrophy and intestinal metaplasia due to infection are the main precursor lesions of gastric cancer. The aim of this study was to evaluate the long-term effects of eradication on the progression of precancerous lesions to metachronous cancer after endoscopic resection of early gastric cancer (EGC).

Methods: Patients who underwent endoscopic resection of EGC were retrospectively reviewed.

Risk factors for early metachronous tumor development after endoscopic resection for early gastric cancer.

Background: Metachronous gastric tumor (MGT) is one of major concerns after endoscopic submucosal dissection (ESD) for early gastric cancer (EGC). Optimal follow-up strategy has not been yet well-established. The aim of this study was to identify the different clinical features of the patients according to the time interval to development of MGT.

Surveillance strategy according to age after endoscopic resection of early gastric cancer.

Background: Whether surveillance strategy after curative endoscopic submucosal dissection (ESD) for early gastric cancer (EGC) differs in young patients is unclear. This study aimed to evaluate the risk of metachronous and extragastric recurrence in young patients with EGC after curative ESD.

Methods: We retrospectively enrolled 1237 consecutive patients who underwent curative ESD for EGC from 2005 to 2014 at a single tertiary hospital.

Novel risk stratification for metachronous recurrence after curative endoscopic submucosal dissection for early gastric cancer.

Background And Aims: This study stratified the risk of developing metachronous gastric cancer (MGC) after curative endoscopic submucosal dissection (ESD) of early gastric cancer (EGC) to enable customization of endoscopic surveillance for MGC.

Methods: A total of 1115 patients who underwent curative ESD based on the expanded criteria for differentiated EGC from 2005 to 2014 at a single tertiary hospital were enrolled in this retrospective cohort study. They were followed up with annual endoscopy for a median of 50.

Clinical implications of pre-existing adenoma in endoscopically resected early gastric cancers.

Background: Although gastric adenoma is widely accepted as a precursor of gastric cancer, pre-existing adenoma is not always detected in gastric cancer patients.

Objective: To investigate the clinical characteristics of early gastric cancer (EGC) arising from adenoma, compared with those of EGC without pre-existing adenoma.

Methods: Patients who underwent endoscopic resection for EGC at a single tertiary hospital were divided into two groups based on the presence (ex-adenoma group) or absence (de novo group) of pre-existing adenoma on pathologic specimens.

Ablation of residual gastric tumor by argon plasma coagulation after endoscopic resection.

Background: For residual gastric tumors (RT) found at the treated sites after endoscopic resections (ER), additional treatment options are additional ER, surgery or argon plasma coagulation (APC). Long-term efficacy of APC as the curative modality for RT has not been fully elucidated. This study aimed to investigate the efficacy and long-term outcome of APC for RT with relevant tumor factors.

Familial Clustering of Gastric Cancer: A Retrospective Study Based on the Number of First-Degree Relatives.

This comprehensive cross-sectional study aimed to identify factors contributing to familial aggregation of gastric cancer (GC). A total of 1058 GC patients and 1268 controls were analyzed separately according to the presence or absence of a first-degree relative of GC (GC-relative). Logistic regression analysis adjusted for age, gender, residence during childhood, smoking, alcohol intake, monthly income, spicy food ingestion, Helicobacter pylori status and host cytokine polymorphisms was performed.

Effect of Helicobacter pylori Eradication and ABO Genotype on Gastric Cancer Development.

Background: Evidence is lacking regarding how Helicobacter pylori infection status, eradication history, and ABO blood type affect the development of gastric cancer (GC) given the multifactorial and distinctive etiology according to cancer location (noncardia vs cardia) and histologic type (intestinal vs diffuse-type). We evaluated the effect of H. pylori infection status incorporated with H.

Concurrent gastric and pulmonary mucosa-associated lymphoid tissue lymphomas with pre-existing intrinsic chronic inflammation: a case report and a review of the literature.

Herein, we report a rare case of concurrent gastric and pulmonary mucosa-associated lymphoid tissue (MALT) lymphomas. A 65-year-old man who had been diagnosed with -positive gastric MALT lymphoma received eradication therapy and achieved complete remission. During follow-up, he developed pulmonary MALT lymphoma as a sequela of pulmonary tuberculosis, accompanied by recurrent gastric MALT lymphoma.

The Diagnostic Validity of Citric Acid-Free, High Dose (13)C-Urea Breath Test After Helicobacter pylori Eradication in Korea.

Background: The (13)C-urea breath test ((13)C-UBT) is a noninvasive method for diagnosing Helicobacter pylori (H. pylori) infection. The aims of this study were to evaluate the diagnostic validity of the (13)C-UBT cutoff value and to identify influencing clinical factors responsible for aberrant results.

Predictive factors of response to proton pump inhibitors in korean patients with gastroesophageal reflux disease.

Background/aims: Proton pump inhibitors (PPIs) are widely used in the treatment of gastroesophageal reflux disease (GERD). However, some patients fail to respond to PPI therapy. We investigated the efficacy of response to PPI therapy in patients with GERD symptoms.