Background: Tumors emerge by acquiring a number of mutations over time. The first mutation provides a selective growth advantage compared to adjacent epithelial cells, allowing the cell to create a clone that can outgrow the cells that surround it. Subsequent mutations determine the risk of the tumor progressing to metastatic cancer.
View Article and Find Full Text PDFWorld J Gastrointest Oncol
February 2023
Genetic variations are associated with individual susceptibility to gastric cancer. Recently, polygenic risk score (PRS) models have been established based on genetic variants to predict the risk of gastric cancer. To assess the accuracy of current PRS models in the risk prediction, a systematic review was conducted.
View Article and Find Full Text PDFObjective: The aim of this study was to summarize previously published data and assess the alterations in the composition of the oral microbiome in OSCC using a systematic review and meta-analysis.
Design: Electronic databases were systematically searched for studies on the oral microbiome in OSCC published before December 2021. Qualitative assessments of compositional variations at the phylum level were performed.
World J Gastrointest Oncol
September 2022
Background: Genetic variants of () are involved in gastric cancer occurrence. Single nucleotide polymorphisms (SNPs) of that are associated with gastric cancer have been reported. The combined effect of SNPs on the risk of gastric cancer remains unclear.
View Article and Find Full Text PDFinfection is a leading cause of gastritis and peptic ulcer. Current treatments for are limited by the increase in antibiotic-resistant strains and low drug delivery to the infection site, indicating the need for effective delivery systems of antibiotics. Although liposomes are the most successful drug delivery carriers that have already been applied commercially, their acidic stability still stands as a problem.
View Article and Find Full Text PDFBackground: The battle against Helicobacter pylori (H. pylori) infections demands fast, reliable, and sensitive methods for pathogen identification (ID), antimicrobial susceptibility tests (ASTs) based on metabolic response, and genome-wide mutation profiling that reveals resistance mechanisms.
Methods: Here we introduce Clinical Antimicrobial Susceptibility Test Ramanometry for H.
Frameshift mutations have been considered of significant importance for the molecular evolution of proteins and their coding genes, while frameshift protein sequences encoded in the alternative reading frames of coding genes have been considered to be meaningless. However, functional frameshifts have been found widely existing. It was puzzling how a frameshift protein kept its structure and functionality while substantial changes occurred in its primary amino-acid sequence.
View Article and Find Full Text PDFThe exploitation of carbon dots (CDs) is now flourishing; however, more effort is needed to overcome their lack of intrinsic specificity. Herein, instead of synthesizing novel CDs, we reinvestigated three reported CDs and discovered that plain ammonium citrate CDs (AC-CDs) exhibited surprising specificity for . Notably, we showed that the interfacial mechanism behind this specificity was due to the affinity between the high abundant urea/ammonium transporters on outer membrane and the surface-coordinated ammonium ions on AC-CDs.
View Article and Find Full Text PDFWe designed a bacteria-targeting and membrane disrupting nanocomposite for successful antibiotic treatment of () infections in the present study. The antibacterial nanocomposite was prepared from thiolated-ureido-chitosan (Cys-U-CS) and anionic poly (malic acid) (PMLA) electrostatic interaction decorated with dual functional ammonium citrate carbon quantum dots (CDs). Cys-U-CS serves as a targeting building block for attaching antibacterial nanocomposite onto bacterial cell surface through Urel-mediated protein channel.
View Article and Find Full Text PDFDysbiosis of the gastric microbiome is involved in the development of gastric cancer (GC). A number of studies have demonstrated an increase in the relative abundance of in GC. In this review, we present data that support the overgrowth of in GC from studies on molecular and bacterial culture of the gastric microbiome, discuss the heterogenic effects of on the health of human stomach, and explore the potential roles of the overgrowth of in gastric carcinogenesis.
View Article and Find Full Text PDFThe detection of Helicobacter pylori infection in human feces is an appropriate non-invasive diagnostic method. However, the antibody-dependent stool antigen immunoassay bears many challenges. Therefore, we developed an antibody-independent biosensing platform.
View Article and Find Full Text PDFOne new xanthone, chryxanthone C (), together with four known analogues (-), were isolated from the cultures of sp. TE-540, an endophytic fungus obtained from the leaves of L. The structure of was elucidated by comprehensive spectral analysis including HRESIMS and 1D/2D NMR, which were confirmed by Cu Kα X-ray crystallography.
View Article and Find Full Text PDFObjective: The aim of this study was to explore the signatures of oral microbiome associated with OSCC using a random forest (RF) model.
Patients And Methods: A total of 24 patients with OSCC were enrolled in the study. The oral microbiome was assessed in cancerous lesions and matched paracancerous tissues from each patient using 16S rRNA gene sequencing.
Alterations in the microbiome are associated with the development of gastric cancer. Our study aimed to identify dysbiotic features in early gastric cancer (EC). The gastric microbiome was assessed in EC ( = 30), advanced gastric cancer (AC) ( = 30), and chronic gastritis (CG) ( = 60).
View Article and Find Full Text PDFThe incidence of gastric hyperplastic polyps (HPs) has been on the rise in recent years. The contribution of infection to this trend has remained to be elucidated. The present study aimed to explore the association between HPs and in China, an area with a high infection rate of .
View Article and Find Full Text PDFBackground: Nonalcoholic fatty liver disease (NAFLD) patients are often prone to coronary artery disease (CAD), and CAD is found to be the main cause of death in NAFLD patients. The purpose of this study was to investigate the association between fatty acid desaturase 2 (FADS2) rs3834458 polymorphism and serum FADS2 level with NAFLD and CAD in Chinese Han population.
Materials And Methods: The serum level of FADS2 was detected by enzyme-linked immunosorbent assay (ELISA) in healthy people, NAFLD patients, and NAFLD patients combined with CAD (NAFLD+CAD).
Non-alcoholic fatty liver disease (NAFLD), the most prevalent chronic liver disease in the world, is affected by numerous extrinsic and intrinsic factors, including lifestyle, environment, diet, genetic susceptibility, metabolic syndrome and gut microbiota. Accumulating evidence has proven that gut dysbiosis is significantly associated with the development and progression of NAFLD, and several highly variable species in gut microbiota have been identified. The gut microbiota contributes to NAFLD by abnormal regulation of the liver-gut axis, gut microbial components and microbial metabolites, and affects the secretion of bile acids.
View Article and Find Full Text PDFSalidroside (SDS) is a phenylpropanoid glycoside isolated from Rhodiola rosea L. It exhibits multiple pharmacological properties in clinical medicine and has been commonly used in traditional Chinese medicine. The present study investigated the inhibitory effects of SDS on tumor invasion and migration, and the expression of metastasis‑related genes in highly metastatic hepatocellular carcinoma (HCC) cells (MHCC97H) in vitro.
View Article and Find Full Text PDFObjective: To systematically review studies about the diagnostic accuracy of magnetic resonance imaging proton density fat fraction (MRI-PDFF) in the classification of hepatic steatosis grade in patients with non-alcoholic fatty liver disease (NAFLD).
Methods: Areas under the summary receiver operating characteristic curves (AUROC), sensitivity, specificity, overall diagnostic odds ratio (DOR), diagnostic score, positive likelihood ratio (+LR), and negative likelihood ratio (-LR) for MRI-PDFF in classification of steatosis grades 0 vs. 1-3, 0-1 vs.
The effect of antibiotics in the stomach for curing Helicobacter pylori infection is hampered by the adverse gastric environment and low bioavailability of the administered drugs. Concerning these challenges, a polymeric nano-micelle was developed. Initially, carboxymethyl chitosan (CMCS) was hydrophobically modified with stearic acid (SA), and the obtained CMCS-g-SA co-polymers was further conjugated with urea to acquire U-CMCS-g-SA co-polymers.
View Article and Find Full Text PDFJ Clin Transl Hepatol
September 2018
The transmembrane 6 superfamily member 2 () gene E167K variant (rs58542926) was identified by exome-wide association study as a nonsynonymous single nucleotide polymorphism associated with nonalcoholic fatty liver disease. The E167K variant features a C-to-T substitution at nucleotide 499, encoding a glutamate with lysine change at codon 167 (E167K). is markedly expressed in the liver, small intestine and kidney, and has been proposed as an important risk factor for diseases associated with lipid metabolism.
View Article and Find Full Text PDFAn aptamer-based fluorescence assay for culture-independent detection of was developed. This assay was enabled by highly specific aptamers conjugated with photoluminescent carbon dots (CDs) as the fluorescent probe and graphene oxide (GO) as the quencher. Specially, high-throughput sequencing was achieved during systematic evolution of ligands exponential enrichment (SELEX) for accurate recognition of aptamers.
View Article and Find Full Text PDFCirculating follicular helper T (cTfh) cells are a novel subset of cluster of differentiation (CD)4+ helper T cells. Interleukin (IL)-21 and C-X-C motif chemokine ligand (CXCL)13 are the principal effectors and chemotactic regulatory factors of Tfh. However, the roles of IL-21 and CXCL13 in gastric cancer have not yet been completely elucidated.
View Article and Find Full Text PDFObjective: The objective of this study is to evaluate the effect of simvastatin on the jaw bone microstructural defect and autophagy in rats with high cholesterol diet (HCD).
Methods: Male Sprague-Dawley rats were fed a standard rodent chow (NC group) or a high cholesterol diet for 32 weeks and the HCD-fed rats were treated with vehicle (HC group) or simvastatin (5 mg/kg orally daily for 8 weeks, HC + SIM group, and = 10/group). The static histomorphometric changes in the jaw bone tissues in individual rats were evaluated.