Publications by authors named "Weigang Chen"

Natural infection by sp. has been reported in humans and more than 150 species of animals, especially carnivorous and omnivorous mammals. Although the presence of sp.

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Although ferroptosis plays a crucial role in hepatic ischemia‒reperfusion injury (IRI), the molecular mechanisms underlying this process remain unclear. We aimed to explore the potential involvement of the receptor for activated C kinase 1 (RACK1) in hepatic IRI-triggered ferroptosis. Using hepatocyte-specific RACK1 knockout mice and alpha mouse liver 12 (AML12) cells, we conducted a series of in vivo and in vitro experiments.

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Background: The prognostic value and clinical relevance of tumor-infiltrating lymphocytes (TILs) and tumor-associated macrophages (TAMs) in esophageal squamous cell carcinoma (ESCC) remain unclear.

Aims: To investigate the prognostic value and functional involvement of TILs in ESCC.

Methods: We included 40 patients across different stages of ESCC from Xinjiang.

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A pancreatic pseudocyst (PPC) is a frequent complication of pancreatitis, often stemming from alcohol, gallstones, or hyperlipidemia. Endoscopic treatment of PPC has become the mainstream treatment. A case of one giant and multiple small PPCs was observed, manifesting as repeated abdominal bloating, abdominal pain, nausea, and vomiting after meals.

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Coiled-coil domain-containing 58 (CCDC58) is a member of the CCDC protein family. Similar to other members, CCDC58 exhibits potential tumorigenic roles in a variety of malignancies. However, there is no systematic and comprehensive pan-cancer analysis to investigate the diagnosis, prognosis, immune infiltration, and other related functions of CCDC58.

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Background: There are challenges for beginners to identify standard biliopancreatic system anatomical sites on endoscopic ultrasonography (EUS) images. Therefore, the authors aimed to develop a convolutional neural network (CNN)-based model to identify standard biliopancreatic system anatomical sites on EUS images.

Methods: The standard anatomical structures of the gastric and duodenal regions observed by EUS was divided into 14 sites.

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In this study, we synthesized 4 cyclometalated iridium complexes using N-(1,10-phenanthrolin-5-yl)picolinamide (PPA) as the main ligand, denoted as [Ir(ppy)PPA]PF (ppy = 2-phenylpyridine, Ir1), [Ir(bzq)PPA]PF (bzq = benzo[h]quinoline, Ir2), [Ir(dfppy)PPA]PF (dfppy = 2-(3,5-difluorophenyl)pyridine, Ir3), and [Ir(thpy)PPA]PF (thpy = 2-(thiophene-2-yl)pyridine, Ir4). Compared to cisplatin and oxaliplatin, all four complexes exhibited significant anti-tumor activity. Among them, Ir2 demonstrated higher cytotoxicity against A549 cells, with an IC value of 1.

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Background: Our previous study found that bone marrow-derived mesenchymal stem cells (BMSCs) promote Helicobacter pylori (H pylori)-associated gastric cancer (GC) progression by secreting thrombospondin-2 (THBS2). Extracellular vesicles (EVs) are important carriers for intercellular communication, and EVs secreted by BMSCs have been shown to be closely related to tumor development. The aim of this study was to investigate whether BMSC-derived microvesicles (MVs, a main type of EV) play a role in H.

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Introduction: Peanut is susceptible to infection of Aspergillus fungi and conducive to aflatoxin contamination, hence developing aflatoxin-resistant variety is highly meaningful. Identifying functional genes or loci conferring aflatoxin resistance and molecular diagnostic marker are crucial for peanut breeding.

Objectives: This work aims to (1) identify candidate gene for aflatoxin production resistance, (2) reveal the related resistance mechanism, and (3) develop diagnostic marker for resistance breeding program.

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Article Synopsis
  • Lung cancer, specifically adenocarcinoma (LUAD), is a leading cancer worldwide with significant new cases and death rates, necessitating improved survival prediction methods.
  • DNA methylation, an important epigenetic mechanism, is linked to cancer development and requires further investigation for its prognostic potential in LUAD.
  • The study analyzed data from TCGA and GEO databases to identify differentially methylated genes and develop a prognostic model, ultimately assessing survival rates and potential drug applications related to LUAD.
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  • Researchers identified sheep as an unusual intermediate host for the Echinococcus multilocularis parasite, which causes alveolar echinococcosis, in Gansu Province, China.
  • The study involved collecting cyst-like samples from sheep and performing genetic analysis to confirm their identity as E. multilocularis, showing high genetic similarity to known sequences.
  • This finding highlights the need for increased monitoring and surveillance of the parasite in the region due to its high zoonotic potential.
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Objective: To explore the competing endogenous RNA (ceRNA) network related to ferroptosis in hepatocellular carcinoma (HCC) and its promise for clinical application.

Methods: We obtained RNA sequencing data for HCC and relevant clinical information from The Cancer Genome Atlas (TCGA) database. To assess the involvement of the autophagy, pyroptosis, and ferroptosis pathways in HCC, we used single-sample Gene Set Enrichment Analysis (ssGSEA) to compute scores for each sample based on pre-defined gene sets.

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Purpose: There are few studies on the risk factors of postoperative complications after surgical treatment of hepatic hemangioma (HH). This study aims to provide a more scientific reference for clinical treatment.

Methods: The clinical characteristics and operation data of HH patients undergoing surgical treatment in the First Affiliated Hospital of Air Force Medical University from January 2011 to December 2020 were retrospectively collected.

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An InDel marker closely linked with a major and stable quantitative trait locus (QTL) on chromosome A08, qSUCA08.2, controlling sucrose content will benefit peanut flavor improvement. Sucrose is the main soluble sugar in mature peanut kernel, and its content is a key determinant of flavor.

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  • Esophageal squamous cell carcinoma (ESCC) is a severe cancer with poor treatment outcomes, largely due to chemotherapy resistance influenced by M2 tumor-associated macrophages (M2-TAMs).
  • In laboratory and animal experiments, M2-TAMs were shown to decrease the effectiveness of the chemotherapy drug cisplatin by secreting TGF-β1, which activates specific cellular pathways that sustain cancer cell traits (stemness) that contribute to drug resistance.
  • High levels of M2-TAMs in human ESCC tissue correlate with elevated TGF-β1 and poorer patient prognoses, suggesting that targeting the TGF-β signaling pathway could help overcome chemotherapy resistance in ESCC.
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Introduction: The wild allotetraploid peanut contains a higher oil content than the cultivated allotetraploid . Besides the fact that increasing oil content is the most important peanut breeding objective, a proper understanding of its molecular mechanism controlling oil accumulation is still lacking.

Methods: We investigated this aspect by performing comparative transcriptomics from developing seeds between three wild and five cultivated peanut varieties.

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Peanut (Arachis hypogaea L.) is an important source of edible oil and protein for human nutrition. The quality of peanut seed oil is mainly determined by the composition of fatty acids, especially the contents of oleic acid and linoleic acid.

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Objective: The objective is to evaluate the value of EUS in the determination of infiltration depth of early carcinoma and precancerous lesions in the upper gastrointestinal tract and to analyze the various factors affecting the accuracy of EUS.

Methods: One hundred and sixty-three patients diagnosed with early gastric cancer or early esophageal cancer, and associated precancerous lesions, who were seen in our hospital in the recent 10 years were selected. These patients received EUS before endoscopic submucosal dissection or surgery.

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  • Endoscopic submucosal dissection (ESD) is typically done over multiple days due to potential complications, but this study aimed to test the safety of a same-day discharge (S-D) approach.
  • Data from 479 patients who underwent ESD between 2018 and 2021 was analyzed, with 91 in the S-D group and 379 in the multi-day (M-D) group, and their outcomes were compared.
  • The results showed no significant difference in serious complications between the two groups, but the S-D group had a much shorter hospital stay and reduced medical costs, indicating that same-day discharge can be a viable option for these patients.
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Synthetic single-stranded (ss) DNA is a cornerstone for life and materials science, yet the purity, quantity, length, and customizability of synthetic DNA are still limiting in various applications. Here, we present PECAN, paired-end cutting assisted by DNAzymes (DNA enzymes or deoxyribozymes), which enables mass production of ssDNA of arbitrary sequence (up to 7000 nucleotides, or nt) with single-base precision. At the core of PECAN technique are two newly identified classes of DNAzymes, each robustly self-hydrolyzing with minimal sequence requirement up- or down-stream of its cleavage site.

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Introduction: Although the 9-minute mean withdrawal time (m-WT) is often reported to be associated with the optimal adenoma detection rate (ADR), no randomized trials of screening colonoscopy have confirmed the impact of a 9-minute m-WT on adenoma miss rate (AMR) and ADR.

Methods: A multicenter tandem trial was conducted in 11 centers. Seven hundred thirty-three asymptomatic participants were randomized to receive segmental tandem screening colonoscopy with a 9-minute withdrawal, followed by a 6-minute withdrawal (9-minute-first group, 9MF, n = 366) or vice versa (6-minute-first group, 6MF, n = 367).

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Hepatocellular carcinoma (HCC) is a common type of malignant tumor with high morbidity and mortality. The oxidative phosphorylation (OXPHOS) metabolic pathway produces adenosine triphosphate (ATP) by delivering electrons to transmembrane protein complexes in the mitochondria. This research was dedicated to identifying an OXPHOS-associated signature for the assessment of prognosis of HCC patients.

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  • This study evaluated the effectiveness and safety of three high-dose amoxicillin and proton pump inhibitor (PPI) dual therapies for treating Helicobacter pylori infections in treatment-naive patients.
  • A total of 945 patients were randomly assigned to different regimens of esomeprazole and amoxicillin, with eradication rates showing no significant differences among the groups.
  • The results indicated that a history of antibiotic use impacted the success of one treatment regimen, and adverse event rates were reported similarly across all groups.
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The melatonin 1A receptor (MTNR1A) is a membrane receptor distributed across the mammalian gonadal axis-associated membrane. Melatonin (MT) can specifically bind with MTNR1A on the cell membrane and regulates mammalian reproductive activities. However, the role of MTNR1A in regulating the reproductive physiological activities of sheep in the Tibetan Plateau remains unclear.

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Background: Aflatoxin contamination caused by Aspergillus fungi has been a serious factor affecting food safety of peanut (Arachis hypogaea L.) because aflatoxins are highly harmful for human and animal health. As three mechanisms of resistance to aflatoxin in peanut including shell infection resistance, seed infection resistance and aflatoxin production resistance exist among naturally evolved germplasm stocks, it is highly crucial to pyramid these three resistances for promoting peanut industry development and protecting consumers' health.

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