Yi-Hsing Chen

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OBJECTIVE To investigate the kinetics of hepatitis B virus (HBV) viral loads and HBV reactivation in rheumatoid arthritis (RA) patients undergoing therapy with tumour necrosis factor alpha (TNFα) inhibitors. METHODS The authors investigated the virological, serological and biochemical evidence of HBV reactivation in 88 RA patients receiving anti-TNFα(More)
BACKGROUND Toll-like receptor (TLR) molecules play a critical role in directing the course of acquired immunity, including that associated with allergic disease, by recognizing specific microbial products that activate immune cells for effector functions. OBJECTIVE We investigated whether human basophils express 2 such molecules (TLR2 and TLR4), and(More)
The minichromosome maintenance (MCM) proteins, members of the AAA+ (ATPase associated with diverse cellular activities) superfamily, are believed to constitute the replicative helicase in eukaryotic and archaeal species. Here, we present the 1.9 A resolution crystal structure of a monomeric MCM homolog from Methanopyrus kandleri, the first crystallographic(More)
Staphylococcus aureus encodes the specialized ESAT-6 Secretion System (ESS). EsxA and EsxB are secreted by the ESS pathway, and share sequence features of ESAT-6 and CFP-10 of the Type VII Secretion System (T7SS) of Mycobacterium tuberculosis. Unlike ESAT-6 and CFP-10, EsxA and EsxB do not interact. Instead, EsxB associates with a novel substrate, EsxD, and(More)
Staphylococcus aureus encodes the Sec-independent Ess secretion pathway, an ortholog of mycobacterial T7 secretion systems which is required for the virulence of this Gram-positive microbe. The Ess (ESX secretion) pathway was previously defined as a genomic cluster of eight genes, esxA, esaA, essA, essB, esaB, essC, esaC, and esxB. essABC encode membrane(More)
Staphylococcus aureus secretes EsxA and EsxB, two small polypeptides of the WXG100 family of proteins. Genetic analyses have shown that production and secretion of EsxA and EsxB require an intact ESAT-6 Secretion System (ESS), a cluster of genes that is conserved in many Firmicutes and encompasses esxA and esxB . Here, we characterize EssB, one of the(More)
BACKGROUND Proteins from latex gloves have been documented to trigger occupational latex allergy among health care workers. Allergen characterization of latex glove extract has never been studied in Taiwan. This study aimed to identify allergenic proteins from latex gloves. METHODS Crude extracts of latex gloves were prepared with phosphate-buffered(More)
BACKGROUND AND PURPOSE Data on the disease course and ultimate outcome of adult-onset Still's disease (AOSD) are limited. We analyzed the clinical manifestations, disease course, and complications of patients with AOSD in Taiwan. METHODS A retrospective cohort design with prospective follow-up was used. Eighty two patients with AOSD diagnosed between 1983(More)
PURPOSE To compare the effect and the treatment outcomes of bevacizumab and ranibizumab in the treatment of Type 1 retinopathy of prematurity (ROP). METHODS This was a bicentered retrospective case series performed at institutional referral centers. Seventy-two eyes of 37 patients who had intravitreal injections of either bevacizumab or ranibizumab as the(More)
BACKGROUND/PURPOSE Adalimumab is a fully humanized monoclonal antibody that blocks tumor necrosis factor (TNF)-alpha, which is effective in the treatment of patients with rheumatoid arthritis (RA). The purpose of this study was to compare the efficacy and safety of adalimumab plus methotrexate (MTX) and MTX alone in Taiwanese patients with active RA. (More)