Publications by authors named "Weiyuan Chang"

Article Synopsis
  • An artificial intelligence-based system (AI-CRS) was developed to verify cecal intubation during colonoscopy and assess its effect on adenoma detection.
  • After implementing AI-CRS from 2019 to 2022, there were significant increases in adenoma detection rates (ADR) and advanced adenoma detection rates (AADR), even though the overall cecal intubation rate (CIR) remained stable.
  • The study concluded that using AI for post hoc verification improved the detection of adenomas during screening colonoscopies, highlighting the potential of AI in enhancing colorectal cancer screening quality.
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Background And Aims: Early-onset colorectal cancer (CRC) is increasing globally. While the United States have lowered the age of initiation of screening to 45 years, other countries still start screening at 50 years of age. In Taiwan, the incidence of CRC has declined in 55- to 74-year-olds after the initiation of screening, but still increased in those 50-54 years of age, potentially due to rising precancerous lesion incidence in 40- to 49-year-olds.

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The fabrication of vertically stacked SiGe nanosheet (NS) field-effect transistors (FETs) was demonstrated in this study. The key process technologies involved in this device fabrication are low pressure chemical vapor deposition SiGe/Si multilayer epitaxy, selective etching of Si layers over SiGe layers using tetramethyl-ammonium-hydroxide wet solution, and atomic layer deposition of YO gate dielectric. For the fabricated stacked SiGe NS p-GAAFETs with a gate length of 90 nm, I/I ratio of around 5.

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Colorectal cancer (CRC) is a common cancer with an increasing incidence worldwide. The implementation of a mass screening program has been proven effective in reducing the global burden of CRC, but its effectiveness is not ideal and some metabolic derangements and lifestyle factors were reported to be attributable for such a deficit. Implementing positive lifestyle intervention as primary prevention therefore becomes critical because colorectal carcinogenesis can be promoted by several lifestyle factors, such as a lack of physical activity.

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Background And Study Aims: Exercise is associated with a lower risk of colorectal neoplasm but its association with metachronous advanced colorectal neoplasm development after polypectomy remains unclear. We aimed to investigate associations between subjects' exercise habits and the risk of metachronous advanced colorectal neoplasm.

Patients And Methods: This study analyzed subjects older than 40 years who received screening colonoscopy with polypectomy and surveillance colonoscopy between January 2009 and December 2016.

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An accumulating body of evidence has shown that detection and resection of pre-cancerous adenoma by colonoscopy could effectively prevent colorectal cancer (CRC) and its related mortality. Among various colonoscopy quality indicators, such as cecal intubation rate, withdrawal time, and adenoma detection rate (ADR); ADR is the most important and most closely associated with the subsequent risk of CRC. Image-enhanced endoscopy (IEE), including digital and dye-based IEE, was originally developed to discriminate neoplastic from non-neoplastic lesions but later studies have demonstrated that it can also enhance lesion detection by enhancing the contrast between the lesion and background colonic mucosa.

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Intratumoral heterogeneity in epidermal growth factor receptor (EGFR)-mutant mutant non-small-cell lung cancer (NSCLC) explains the mixed responses to EGFR-tyrosine kinase inhibitors (TKIs). However, some studies showed tumors with low abundances of EGFR mutation still respond to EGFR-TKI, and the mechanism remained undetermined. Extracellular vesicles (EVs) can transmit antiapoptotic signals between drug-resistant and drug-sensitive cells.

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Background: Prophylaxis with nucleos(t)ide analogue (NA) is recommended to prevent hepatitis B virus (HBV) reactivation in hepatitis B surface antigen (HBsAg)-positive patients receiving rituximab-based B-cell depletion therapy. However, little is known about the risk of clinical relapse after withdrawal of NA.

Methods: We retrospectively analyzed 77 noncirrhotic HBsAg carriers with hematological cancer who received rituximab-containing chemotherapy.

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Background: Osimertinib yields significant tumor responses and durations of progression-free survival (PFS) in patients with acquired T790M mutations. However, the evidence supporting liquid biopsy-guided treatment is still limited. This study examined the real-world benefits of osimertinib in patients with tissue or plasma T790M mutations.

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Introduction: Brain metastases (BM) are common in advanced non-small cell lung cancer (NSCLC), and the prognosis is poor with few therapeutic options. This study evaluated the efficacy of three epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs) in preventing and treating BM in patients with EGFR mutation-positive advanced NSCLC.

Methods: Patients with EGFR mutation-positive advanced NSCLC who visited a tertiary referral center from 1 December 2013 to 30 November 2017 were analyzed retrospectively.

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Previous studies have demonstrated the association between EGFR mutations and distant metastasis. However, the association for subsequent brain metastasis (BM) in stages I-III non-small cell lung cancer (NSCLC) patients remains inconclusive. We conducted a retrospective analysis to clarify the impact of EGFR mutations on the incidence of BM and associated survival in patients with stage I-III NSCLC.

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Chlorine is a highly toxic respiratory irritant that when inhaled causes epithelial cell injury, alveolar-capillary barrier disruption, airway hyperreactivity, inflammation, and pulmonary edema. Chlorine is considered a chemical threat agent, and its release through accidental or intentional means has the potential to result in mass casualties from acute lung injury. The type 4 phosphodiesterase inhibitor rolipram was investigated as a rescue treatment for chlorine-induced lung injury.

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Acetaminophen (APAP) is hepatotoxic and can cause toxicity in Jurkat T cells. p-Aminophenol (PAP), an industrial chemical and APAP metabolite, is nephrotoxic and hepatotoxic. Its potential toxicity in Jurkat T cells was investigated.

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Chlorine gas is considered a chemical threat agent that can cause acute lung injury. Studies in the early 20th century on war gases led Haber to postulate that the dose of an inhaled chemical expressed as the product of gas concentration and exposure time leads to a constant toxicological effect (Haber's Law). In the present work, mice were exposed to a constant dose of chlorine (100 ppm-h) delivered using different combinations of concentration and time (800 ppm/7.

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Inflammation is associated with various pulmonary diseases and contributes to the pathogenesis of acute lung injury. We previously identified a proinflammatory signaling pathway triggered by G protein-coupled receptors (GPCRs) in which stimulation of G(q)-coupled GPCRs results in activation of the transcription factor NF-kappaB. Because damage to the lung causes the release of multiple mediators acting through G(q)-coupled GPCRs, this signaling pathway is likely to contribute to inflammatory processes in the injured lung.

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Acute lung injury is associated with an inflammatory response resulting from the action of multiple mediators. Many proinflammatory mediators released during lung injury exert effects by binding to G protein-coupled receptors (GPCRs). The authors' earlier studies showed that substance P (SP), a ligand for the tachykinin 1 receptor, induced nuclear factor (NF)-kappa B activation and interleukin (IL)-8 up-regulation through a G(q)-dependent pathway.

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4-Hydroxy-2-nonenal (HNE), the aldehydic product of lipid peroxidation, is associated with multiple immune dysfunctions, such as HIV and hepatitis C virus infection. HNE-induced immunosuppression could be due to a decrease in CD4+ T lymphocyte activation or proliferation. Glutathione (GSH) is the most abundant endogenous antioxidant in cells, and an adduct between HNE and GSH has been suggested to be a marker of oxidative stress.

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