Publications by authors named "Chiu Cheng-Hsun"

Objective: Early reports have indicated that the Omicron variant of coronavirus disease 2019 (COVID-19) may be associated with low mortality. However, the mortality rate of critical patients in Taiwan with COVID-19 caused by different variants has not been well described.

Methods: This retrospective cohort study was conducted at the Linkou Branch of Chang Gung Memorial Hospital, Taiwan, from April 2020 to September 2022.

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Respiratory syncytial virus (RSV) is the most common pathogen for young children hospitalized with bronchiolitis and pneumonia. Most infections occur below 1 year of age. RSV is also a significant viral pathogen for adults with respiratory tract infection.

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Background/aims: The increasing use of biologic therapies for moderate to severe inflammatory bowel disease (IBD) highlights the importance of optimal treatment sequencing, particularly after vedolizumab (VDZ) exposure. Studies comparing the effectiveness of ustekinumab (UST) and antitumor necrosis factor (anti-TNF) agents post-VDZ are limited.

Methods: This retrospective study analyzed VDZ-experienced IBD patients treated with UST or anti-TNF (adalimumab and infliximab) from May 2019 to January 2024.

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The objective of the study was to assess the safety, tolerability, and potential efficacy of intranasally administered AD17002, a detoxified form of heat-labile enterotoxin, in treating individuals with mild-to-moderate coronavirus disease of 2019 (COVID-19). In this randomized, double-blinded, and placebo-controlled phase 2a study, a total of 30 adults aged 20-70 years with mild-to-moderate COVID-19 were recruited from three medical centers in Taiwan in 2022-2023. The trial comprised two cohorts, and participants were randomly assigned to receive intranasal administrations of either three doses of AD17002 immunomodulator or a placebo formulation buffer.

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Background: Extremely low birthweight (ELBW) infants invariably receive multiple antibiotic therapies during hospitalization. However, the causes of high cumulative antibiotic exposure, as well as the impact of such exposure on the outcomes of preterm infants, particularly long-term neurodevelopmental outcomes, remain to be elucidated. Furthermore, the cumulative effects of simultaneous use of multiple antibiotics are often overlooked.

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Article Synopsis
  • Angiostrongylus cantonensis is a zoonotic parasite that causes serious neurological damage in humans, and this study investigates the role of secreted microRNAs in host-parasite interactions.
  • Researchers used next-generation sequencing to create a dataset of microRNAs from the parasite's excretory-secretory products (ESPs) and examined their effects on mouse astrocytes.
  • The study identified novel microRNAs that regulate critical signaling pathways, reducing cell apoptosis and inflammation, thereby enhancing understanding of how this parasite interacts with host cells.
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Purpose: As certain vaccine serotypes are still circulating within the community during the PCV13 era, we aimed to delineate the clinical features and assess the immunity following breakthrough infections in children.

Methods: 101 PCVs-vaccinated children < 18 years with culture confirmed PCV13 serotype breakthrough infection (25/101, invasive pneumococcal disease [IPD]) was identified in Taiwan in 2015-2019. Immunoglobulin G (IgG) antibody levels, IgM memory B cells (MBCs), and isotype-switched immunoglobulin (sIg) MBC specific to serotypes 3, 14, 19 A were assessed prior to and one month after an additional PCV13 booster in 9 patients.

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This narrative review describes pneumococcal serotype prevalence for invasive disease and carriage and antibiotic resistance among specimens collected from children in countries across South and Southeast Asia from 2012 to 2024. Literature search retrieved 326 articles; 96 were included. The prevalence of pneumococcal serotypes varied geographically and over time after introduction of pneumococcal conjugate vaccine.

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  • This study evaluated the safety and immune response of various COVID-19 vaccines among healthcare workers in Taiwan during the Omicron variant outbreak, comparing their effectiveness.
  • Conducted from March 2021 to July 2023, the research involved 710 healthcare workers who received different vaccines, with blood samples taken to measure antibody levels and record side effects.
  • Results showed that mRNA vaccines like Moderna offered the highest initial antibody levels and effectiveness, while regular booster doses significantly boosted immunity and reduced COVID-19 cases among workers.
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  • Enterovirus A71 (EV-A71) is a virus that can cause serious health issues like hand, foot, and mouth disease and complications such as encephalitis in young children.
  • A study followed 227 children aged 2 months to less than 6 years who received an inactivated EV71 vaccine (EV71vac) to assess its long-term immunity for up to 5 years.
  • Results showed consistently high neutralizing antibody levels against various EV-A71 subgenotypes, with no reported long-term safety issues, indicating strong and lasting immunity in children.
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Background: To explore the role of gut microbiota in preterm infants at high risk of developing retinopathy of prematurity (ROP).

Methods: Preterm infants with gestational age (GA) < 32 weeks and/or birth weight (BW) < 1500 g born between 2020 and 2021 were prospectively enrolled. Their faecal samples were collected and analysed at different postnatal ages of life using 16S rRNA gene sequencing on the Miseq platform.

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  • Clostridium innocuum, once thought harmless, is a resistant bacterium linked to various infections and gastrointestinal issues, prompting a study on its genetic makeup and pathogenic potential.
  • The research involved analyzing 112 isolates to identify genetic variations and measure biofilm production, revealing significantly different biofilm-producing capacities among genetically distinct groups.
  • Findings indicate that a specific genetic clade of C. innocuum creates substantial biofilms, enhancing its resistance to high levels of vancomycin, potentially contributing to its pathogenicity.
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The coronavirus disease 2019 (COVID-19) pandemic has sparked widespread concern globally, particularly with the Omicron variant and its sub-lineages emerging as the predominant cause of infection for nearly two years. Taiwan's successful containment of COVID-19, underscored by broad vaccine coverage, the utilization of anti-viral therapeutics, and timely response strategies, has resulted in reduced excess mortality. Moreover, there is a crucial need for a phased exit strategy, balancing efforts to curtail disease transmission with the mitigation of socioeconomic impacts from rigorous measures.

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Background: Cytolethal distending toxin (CDT) belongs to the genotoxin family and is closely related to Campylobacter jejuni-associated gastroenteritis. We recently reported that CDT triggers the danger-associated molecular pattern (DAMP) signaling to exert deleterious effects on host cells. However, how CDT traffics in cells and the mechanism of CDT intoxication remain to be elucidated.

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  • Autophagy is a crucial process for cellular health, especially during stress, and is relevant in the context of neuroangiostrongyliasis, an emerging parasitic infection.
  • The study explored how benzaldehyde treatment affects autophagy and sonic hedgehog (Shh) signaling in mice infected with Angiostrongylus cantonensis.
  • Findings revealed that benzaldehyde, alongside albendazole, reduces brain inflammation and improves autophagy and Shh signaling, potentially offering a new therapeutic approach for this infection.
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infection (CDI) worsens inflammatory bowel disease (IBD) prognosis. While fecal microbiota transplantation (FMT) is effective for refractory or recurrent CDI (rrCDI), comparative success rates between IBD and non-IBD patients are scarce. This study addresses this gap.

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Background: The SARS-CoV-2 Omicron BA.2 outbreak started in Taiwan in April 2022. The pandemic posed a challenge to pediatric emergency departments (PEDs) because of increased PED visits and diverse clinical presentations.

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Unlabelled: The hyaluronic acid capsule is crucial in protecting group A (GAS) against phagocytic killing. However, there have been reported outbreaks caused by capsule-deficient GAS strains, and the mechanisms underlying their evasion of immune clearance remain unclear. This study demonstrated that the capsule-deficient mutant [Cap(-)] of the strain increased survival within phagocytic cells compared to the wild-type strain [Cap(+)].

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  • The study focuses on the gene cluster for Type IV pilus (Tfp) biosynthesis in certain strains, exploring the role of three major pilin proteins (PilA1, PilA2, and PilA3) in Tfp assembly and twitching motility.
  • Researchers discovered that different PilA proteins contribute to variations in the morphology and functionality of Tfp, with PilA1 being the most crucial for twitching motility and biofilm formation.
  • While the individual deletion of PilA genes had minor impact on host cell invasion, removing all three genes or the gene for the retraction ATPase severely affected Tfp-mediated invasion, highlighting the importance of Tfp retraction over active twitching
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  • Serotypes 6C and 6D are significant contributors to invasive pneumococcal disease (IPD), alongside 6A and 6B, and the introduction of vaccines PCV7 and PCV13 has significantly reduced IPD cases in children and the elderly.
  • * However, the use of these vaccines has led to a replacement effect among serotypes, which reduces overall vaccine effectiveness.
  • * To tackle this issue, researchers developed a library of oligosaccharide fragments from the capsular polysaccharides of serotypes 6A, 6B, 6C, and 6D to create glycoprotein vaccines, demonstrating that certain conjugates can induce strong immune responses and cross-protective activity
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Aim: The response rate to pioglitazone and the predictive factors for its effects on improving liver biochemistry in patients with steatotic liver disease (SLD) remain elusive, so we aimed to investigate these issues.

Methods: A 3-year prospective cohort study of 126 Taiwanese patients with SLD treated with pioglitazone (15-30 mg/day) was conducted. Phospholipase domain-containing protein 3 I148M rs738409, methylenetetrahydrofolate reductase rs1801133, aldehyde dehydrogenase 2 (ALDH2) rs671 and lipoprotein lipase rs10099160 single nucleotide polymorphisms were assessed in the patients.

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Background: Cytomegalovirus (CMV) colitis significantly complicates the course of inflammatory bowel disease (IBD), frequently leading to severe flare-ups and poor outcomes. The role of antiviral therapy in hospitalized IBD patients with CMV colitis is currently under debate. This retrospective analysis seeks to clarify the influence of antiviral treatment on these patients.

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Background: We investigated the effects of combination therapy albendazole and doxycycline in Angiostrongylus cantonensis-infected mice during early and late treatment.

Materials And Methods: C57BL/6 and BALB/c mice were divided into five groups: (i) uninfected, (ii) infected with A. cantonensis, (iii) infected + 10 mg/kg albendazole, (iv) infected + 25 mg/kg doxycycline, and (v) infected + 10 mg/kg albendazole + 25 mg/kg doxycycline.

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  • The study focused on finding serum exosomal microRNAs (miRNAs) linked to the shift from atrial fibrillation (AF) to sinus rhythm (SR) and their potential as early biomarkers for AF recurrence within three months post-treatment.
  • Blood samples from eight AF patients were collected before and after rhythm control therapy, allowing researchers to isolate exosomes and perform RNA sequencing.
  • Nine specific miRNAs were identified as associated with returning to SR, with decreased levels of miR-125a-5p and miR-328-3p indicating a higher chance of early AF recurrence, which also correlated with the duration of AF.
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Objectives: Eravacycline, a new tetracycline derivative, exhibits broad-spectrum antimicrobial susceptibility. This study aimed to comprehensively investigate in vitro activities of eravacycline, tigecycline, and ertapenem against various Gram-positive, Gram-negative, and anaerobic bacteria.

Methods: Minimum inhibitory concentrations (MICs) were determined using the broth microdilution method.

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