Publications by authors named "Yan Yan Shi"

Background: Hyperplastic polyps, which represent 30%-93% of all gastric epithelial polyps, are the second most common type of gastric polyps after fundic gland polyps. They were previously considered to have no risk of neoplastic transformation. Recently, an increasing number of cases of gastric hyperplastic polyps (GHPs) combined with neoplastic changes have been reported; however, the specific mechanism underlying their transformation has not been thoroughly explored.

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() colonizes the human stomach and many studies have discussed the mechanisms of infection leading to gastric diseases, including gastric cancer. Additionally, increasing data have shown that the infection of may contribute to the development of extra-gastric diseases and tumors. Inflammation, systemic immune responses, microbiome disorders, and hypergastrinemia caused by infection are associated with many extra-gastric malignancies.

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Article Synopsis
  • Hemorrhage is a common complication in gastric cancer patients, potentially leading to worse outcomes, but its effect on chemotherapy effectiveness has not been studied before.
  • This study analyzed advanced or metastatic gastric and gastroesophageal junction cancer patients to see how overt bleeding (OB) impacts survival rates and treatment-related side effects.
  • Results showed similar disease control rates and treatment-related adverse events for patients with and without overt bleeding before treatment, but those with bleeding after treatment had a worse median overall survival than those without bleeding.*
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Background: The intrapapillary capillary loop (IPCL) characteristics, visualized using magnifying endoscopy, are commonly assessed for preoperative evaluation of the infiltration depth of esophageal squamous cell carcinoma (ESCC). Japan Esophageal Society (JES) classification is the most widely used classification. Microvascular structural changes are evaluated by magnifying endoscopy for the presence or absence of each morphological factor: tortuosity, dilatation, irregular caliber, and different shapes.

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Background: Minocycline, a derivative of tetracycline, has anti- () properties and can be used to treat infection. However, only a few randomized controlled trials (RCTs) have investigated the efficacy of minocycline-containing quadruple therapy (MCQT) in treating infection. This study aimed to determine the efficacy and safety of MCQT and investigate the factors influencing both aspects.

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Objectives: We aimed to explore the efficacy and safety of tailored therapy guided by genotypic resistance in the first-line treatment of Helicobacter pylori (H. pylori) infection in treatment-naive patients.

Methods: Gastric mucosal specimens were taken during gastroscopy, and main mutations of clarithromycin- and levofloxacin-resistant genes were detected by polymerase chain reaction (PCR).

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Purpose: We aimed to assess the impact of aerobic exercise (AE) on parameters related to cardiotoxicity in breast cancer (BC) patients receiving anthracycline or trastuzumab.

Methods: We performed a systematic review and meta-analysis of comparative studies on AE via the screening of standard databases from their inception to January 18, 2022. The risk of bias was assessed qualitatively using the domains outlined in the Cochrane Handbook for Systematic Reviews of Interventions.

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Background: Ciprofol is a recently developed, short-acting γ-aminobutyric acid receptor agonist sedative that is more potent than propofol, but there have been few clinical studies of this agent to date. Here, we sought to examine the safety and efficacy of ciprofol use for the induction of general anesthesia in individuals undergoing gynecological surgery.

Methods: Women between the ages of 18 and 60 years (ASA physical status 1 or 2) who were scheduled to undergo elective gynecological surgery under general anesthesia were randomly assigned to two equally sized groups in which anesthesia induction was performed using either ciprofol or propofol.

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Background: The present study was designed to identify and understand the potential effectiveness of therapeutic target in intervertebral disc degeneration (IVDD) and its regulation mechanism.

Methods: The role and mechanism of interleukin-18 (IL-18) in the disease were investigated. The IVDD degenerative nucleus pulposus (NP) tissues from the human and mouse models were used.

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Background: The gastric microbiota in patients with gastric cancer (GC) has received increasing attention, but the profiling of the gastric microbiome through the histological stages of gastric tumorigenesis remains poorly understood, especially for patients with -negative GC (HPNGC).

Aim: To characterize microbial profiles of gastric mucosa and juice for HPNGC carcinogenesis and identify distinct taxa in precancerous lesions.

Methods: The 16S rRNA gene analysis was performed on gastric mucosa from 134 -negative cases, including 56 superficial gastritis (SG), 9 atrophic gastritis (AG), 27 intestinal metaplasia (IM), 29 dysplasia (Dys), and 13 GC cases, to investigate differences in gastric microbial diversity and composition across the disease stages.

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Background: () is an important pathogen that can cause a variety of diseases. Yet, full eradication of remains a significant challenge in clinical practice. and other microbial communities have complex interactions in the unique gastric microecological environment.

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Article Synopsis
  • Mitochondria are vital for energy production and various cellular functions, particularly in mammalian oocytes, where they are crucial for germ cell development and avoiding inherited disorders.
  • A systematic analysis of oocyte mitochondria was hindered by both the scarcity of oocyte samples and technical issues in studying mitochondrial proteins in live cells.
  • This study utilized proximity labeling proteomics to identify 158 mitochondrial proteins in live mouse oocytes and demonstrated how exposure to the chemotherapy drug cisplatin caused changes in the levels of specific mitochondrial proteins.
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To date, there are some chemically synthesized curcumin derivatives which were produced and identified to evade the disadvantages of physiochemical stability and solubility of curcumin. Here, one novel curcumin derivative, (2-(3-{(1E)-{(E)-3-(4-hydroxy-3-methoxybenzylidene)-2-oxocyclohexylidene)methyl)-1H-indol-1-yl)acetic acid}, (abbreviated as MOMI-1) was first used to detect the antiproliferation activity with MTT assays in different cancer cells including A549 lung cancer cells, MCF-7, and HEPG2 cell lines, and exhibited its wide inhibition spectrum. Next, we found that MOMI-1 could induce autophagic genesis of A549 cells by acridine orange or monodansylcadaverine (MDC) staining and green fluorescent protein-light chain 3 (GFP-LC3) recombinant plasmid transfection analysis, respectively.

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Helicobacter pylori infection is related to the development of gastric diseases. Our previous studies showed that high thioredoxin-1 (Trx1) expression in H. pylori can promote gastric carcinogenesis.

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Oxymatrine is one of the primary natural compounds extracted from the Sophora flavescens, and has been reported to exhibit numerous pharmacological properties including cancer‑preventive and anti‑cancer effects, however the mechanisms as to how oxymatrine exhibits anti‑proliferative activity in non‑small cell lung carcinoma cells remains uncertain. The present study aimed to explore the mechanism of its anti‑cancer effect, and whether it is due to apoptosis induction and anti‑migration in the A549 lung cancer cell line. Detection of morphological alterations, MTT analysis, Hoechst/propidium iodide dual staining and terminal deoxynucleotidyl transferase dUTP nick end labeling assays verified that oxymatrine induced A549 cell apoptosis.

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An early ripening bud mutant was analyzed based on the histological, SSR, and methylation-sensitive amplified polymorphism (MSAP) analysis and a layer-specific approach was used to investigate the differentiation between the bud mutant and its parent. The results showed that the thickness of leaf spongy tissue of mutant (MT) is larger than that of wild type (WT) and the differences are significant. The mean size of cell layer L2 was increased in the mutant and the difference is significant.

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Objective: Previous studies by this group have shown that Helicobacter pylori with high thioredoxin-1 (Trx1) expression might be involved in stomach carcinogenesis in vitro. To study histopathological changes of the stomach mucosa in vivo, a Mongolian gerbil model infected with H. pylori with high Trx1 expression was established.

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Article Synopsis
  • The study investigates the role of antioxidant proteins in Helicobacter pylori, focusing on three specific proteins (Trx1, RocF, and AhpC) and their relationship to gastric diseases.
  • Forty H. pylori strains were analyzed from patients with varying conditions: gastric cancer, peptic ulcers, and gastritis, with real-time PCR used to measure protein expression levels.
  • Findings suggest that Trx1 and RocF are more expressed in gastric cancer cases, indicating a potential link to gastric carcinogenesis, while no significant differences were found for AhpC across sample types.
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Objective: To clone the Helicobacter pylori (Hp) thioredoxin-1 (Trx1) gene and construct the recombinant expression vector containing the target gene, then to express and purify the protein, and detect its activity.

Methods: The cDNA gene of the Hp Trx1 was amplified by RT-PCR from the international standard strain 26695, using the specific primers containing double endonuclease digesting sites. The Hp Trx1 cDNA was then inserted into the pEASY-T1 vector to construct the pEASY-T1-Hp Trx1 recombinant vector.

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Over-expression of Fas ligand (FasL) on tumor cell surface can induce the apoptosis of specific activated tumor infiltrating lymphocytes (TILs) via the Fas/FasL pathway, leading to the formation of a site of immune privilege surrounding the tumor mass for escaping immune surveillance and promoting tumor proliferation, invasion and metastasis. The blocking effect of miR-21 on FasL-mediated apoptosis in breast cancers was investigated in this study. The expression levels of miR-21 and FasL in human breast carcinoma cell lines were detected by using RT-PCR and Western blotting.

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Cancer is a menace fast gaining momentum in Nigeria and other developing countries. It is an expensive disease requiring a major financial and human resources for prevention, diagnosis and treatment. With no national policy on cancer control in the country, incidence (111.

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  • * Researchers examined a Chinese Han group of 273 participants, investigating the impact of 21 SNPs in five candidate genes and measuring the effects of childhood trauma and recent life stress using specific questionnaires.
  • * The findings revealed that a specific SNP in the CRHR1 gene (rs28364032) is significantly associated with improvement in depressive symptoms after treatment, suggesting that genetic factors contribute to individual differences in how patients respond to antidepressant medications.
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In order to understand and rationally construct homochiral self-assembled structures from racemic molecules, two novel crystalline metal-organic frameworks with chiral cavities were developed. The homochirality of the layers in both MOFs was achieved by forming strong coordinate bonds between the C3-symmetric cyclotriveratrylene and Zn4O(CO2)6 cluster. By changing weak π-π interactions between organic building blocks, the achiral assembly of ZnCTV-1 was successfully transformed into a chiral assembly in ZnCTV-2.

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Signal transduction has been reported to be involved in antidepressant treatment outcomes; however, its mechanisms remain unclear. The aims of this study were to explore the associations between antidepressant remission and single nucleotide polymorphisms (SNPs), haplotypes, and gene-gene interactions in the Ras-Raf-MAPK intracellular signaling pathway. A total of 302 inpatients with major depressive disorder (DSM-IV Axis I) were assessed using the 17-item Hamilton Depression Rating Scale before and after 8 weeks of antidepressant treatment to determine the remission rate in the samples.

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Article Synopsis
  • The study aimed to evaluate how specific variations in the MTHFR gene affect patients' responses to antidepressant treatments among a group of 281 Chinese Han participants over several weeks.
  • Researchers found no significant differences related to gender, age, or education between those who responded well to treatment and those who did not; however, men and those with more depressive episodes were less likely to achieve remission.
  • A particular haplotype (combination of SNPs) in the MTHFR gene showed a significant link to better responses to antidepressants, especially in males and those treated with serotonin noradrenaline reuptake inhibitors (SNRIs).
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