Publications by authors named "Chia C Wu"

Background: Thyroid differentiation score (TDS), calculated based on mRNA expression levels of 16 genes controlling thyroid metabolism and function, has been proposed as a measure to quantify differentiation in PTC. The objective of this study is to determine whether TDS is associated with survival outcomes across patient cohorts.

Methods: Two independent cohorts of PTC patients were used: 1) the Cancer Genome Atlas (TCGA) thyroid cancer study (N=372), 2) MD Anderson Cancer Center (MDACC) cohort (N=111).

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The integrated stress response (ISR) is a key cellular signaling pathway activated by environmental alterations that represses protein synthesis to restore homeostasis. To prevent sustained damage, the ISR is counteracted by the upregulation of growth arrest and DNA damage-inducible 34 (GADD34), a stress-induced regulatory subunit of protein phosphatase 1 that mediates translation reactivation and stress recovery. Here, we uncover a novel ISR regulatory mechanism that post-transcriptionally controls the stability of PPP1R15A mRNA encoding GADD34.

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Article Synopsis
  • - The study examined the triplet transitions in various light-emitting materials like rose bengal and several iridium compounds using advanced spectroscopy techniques.
  • - The samples were excited using a 355 nm laser, leading to efficient movement from their singlet to triplet excited states, revealing specific absorption bands corresponding to these transitions.
  • - Distinct absorption bands were identified for each material, with rose bengal showing a band at 9400 cm, while iridium compounds showed bands at around 7500-7700 cm, indicating different contributions from metal-to-ligand charge transfer mechanisms.
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is one of the most prevalent pathogens, causing a variety of infections including bloodstream infections. At the same time, it can be found as a commensal, being part of the intestinal microflora. While it is widely accepted that pathogenic strains can evolve from colonizing strains, the evolutionary route facilitating the commensal-to-pathogen transition is complex and remains not fully understood.

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  • - The paper addresses a complex surgical scheduling problem, aiming to optimize start times for multiple elective surgeries in a single operating room to maximize utility value while meeting performance standards.
  • - Due to the analytical complexities involving expectations and variances, traditional optimization methods aren't suitable for this problem, making it difficult to solve directly.
  • - A new decision support algorithm is introduced, which uses a two-phase approach: first screening for variance, then applying multiple attribute utility theory to identify the best scheduling solution, showing promising results in tests.
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How renal function influences post-acute myocardial infarction (AMI) cardiac remodeling and outcomes remains unclear. This study evaluated the impact of levels of renal impairment on drug therapy, echocardiographic parameters, and outcomes in patients with AMI undergoing percutaneous coronary intervention (PCI). A total of 611 patients diagnosed with AMI underwent successful PCI, and two echocardiographic examinations were performed within 1 year after AMI.

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Renal osteodystrophy (ROD) represents bone disorders related to chronic kidney disease (CKD) and several bone biomarkers are used clinically to predict ROD in CKD and hemodialysis (HD) patients. Serum albumin associates with inflammation other than nutritional status in these patients. Chronic inflammation is proved to relate with bone loss, however, the influence of hypoalbuminemia on bone biomarkers is still unclear.

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Background: Rosacea is a chronic inflammatory skin condition whose etiology has been linked to mast cells and the antimicrobial peptide cathelicidin LL-37. Individuals with refractory disease have demonstrated clinical benefit with periodic injections of onabotulinum toxin, but the mechanism of action is unknown.

Objectives: To investigate the molecular mechanism by which botulinum toxin improves rosacea lesions.

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  • Researchers found that deletions of the tumor suppressor gene SMAD4 occur in about one-third of pancreatic ductal adenocarcinoma (PDAC) cases, leading to potential vulnerabilities in cancer metabolism, particularly with the loss of malic enzyme 2 (ME2).
  • When ME3, a related enzyme, is targeted, it selectively kills PDAC cells that lack ME2, indicating that cancer cells rely on ME3 for survival when they don’t have ME2.
  • This lack of ME2 reduces NADPH production and increases reactive oxygen species, activating AMPK which then suppresses important metabolic pathways, suggesting a therapeutic strategy that exploits this weakness in cancer metabolism.
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Unlabelled: The signaling mechanisms between prostate cancer cells and infiltrating immune cells may illuminate novel therapeutic approaches. Here, utilizing a prostate adenocarcinoma model driven by loss of Pten and Smad4, we identify polymorphonuclear myeloid-derived suppressor cells (MDSC) as the major infiltrating immune cell type, and depletion of MDSCs blocks progression. Employing a novel dual reporter prostate cancer model, epithelial and stromal transcriptomic profiling identified CXCL5 as a cancer-secreted chemokine to attract CXCR2-expressing MDSCs, and, correspondingly, pharmacologic inhibition of CXCR2 impeded tumor progression.

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The excessive release of glutamate is a critical element in the neuropathology of epilepsy, and bupivacaine, a local anesthetic agent, has been shown to inhibit the release of glutamate in rat cerebrocortical nerve terminals. This study investigated whether bupivacaine produces antiseizure and antiexcitotoxic effects using a kainic acid (KA) rat model, an animal model used for temporal lobe epilepsy, and excitotoxic neurodegeneration experiments. The results showed that administering bupivacaine (0.

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Purpose: Sensitization to house dust mite (Dermatophagoides pteronyssinus) is a considerable risk factor for the progression of allergic disease. The group 2 allergen from Dermatophagoides pteronyssinus, Der p 2, is considered a major one in patients with specific immunoglobulin E (IgE) to Der p 2. Der p 2 has structural homology with myeloid differentiation 2 (MD-2), which is involved in the lipopolysaccharide-binding component of the Toll-like receptor 4 signaling pathway and the development of inflammation.

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Background: Perinatal brain injury is the leading cause of subsequent neurological disability in both term and preterm baby. Glutamate excitotoxicity is one of the major factors involved in perinatal hypoxic-ischemic encephalopathy (HIE). Glutamate transporter GLT1, expressed mainly in mature astrocytes, is the major glutamate transporter in the brain.

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Background: The purpose of the article is to report our long-term results of minilaparoscopic inguinal hernia repair in children.

Methods: Between September 2003 and September 2008, 161 children with inguinal hernia were treated with minilaparoscopic herniorrhaphy. The asymptomatic contralateral internal ring was routinely explored and repaired if a patent processus vaginalis of not less than 2 cm was noted.

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BDNF (brain-derived neurotrophic factor) and its receptor TrkB (tropomyosin receptor kinase B) play important roles in the progression of cancer, including transitional cell carcinoma (TCC) cells reported in our previous investigation. In this study, we used a specific TrkB antibody (Ab) to evaluate its effects on survival, proliferation and migration/invasion in three TCC cell lines (BFTC905, T24 and TSGH8301) in vitro. The TrkB Ab at 1 and 3 microg/ml, but not the TrkA or TrkC Abs, significantly elicited cytotoxicity in TCC cells.

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Pathologically, >90% of bladder cancer is transitional cell carcinoma (TCC). Previously, brain-derived neurotrophic factor (BDNF) but not tropomyosin-related kinase B (TrkB) was found in normal urothelium. TrkB activation by BDNF has been shown to promote the progression of several cancers, however, the existence and functional roles of both BDNF and TrkB in TCC have not been elucidated.

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Background: To validate its safety and efficacy, we evaluated our preliminary results of the three-port minilaparoscopic nerve-sparing extravesical ureteral reimplantation for patients with vesicoureteral reflux (VUR).

Methods: Between July 2005 and February 2007, 9 consecutive patients (4 girls and 5 boys) with a mean age of 3.4 years (range, 7 months to 5 years) underwent a minilaparoscopic nerve sparing extravesical ureteral reimplantation for VUR.

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Background: This prospective, randomized, single-blind trial was to determine if local anesthesia or oral analgesics reduce postoperative pain after mini-laparoscopic functional surgery.

Methods: One hundred fifteen patients who underwent mini-laparoscopic herniorrhaphy or varicocelectomy were assigned randomly to receive wound infiltration with xylocaine, regular oral analgesics, or a placebo after the procedures. Visual analog pain scores owing to carbon-dioxide irritation and trocar wounds were recorded 2 hours, 1 day, and 1 week after surgery.

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The anterior urethral valve (AUV) is a rare congenital urethral anomaly that can lead to variable urinary tract symptoms. We report on a 13-year-old boy with AUV who was referred from a primary care physician for nocturnal enuresis. AUV was disclosed by videourodynamic study and confirmed by simultaneous retrograde cystourethroscopy and antegrade urethroscopy.

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Background: We designed a technique of pure minilaparoscopic hernia sac transaction and ligation to repair primary inguinal hernias in children and young adults.

Methods: Between September 2003 and December 2004, 83 patients with primary inguinal hernia were treated surgically with minilaparoscopic herniorrhaphy. The mean patient age was 6.

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Article Synopsis
  • Humeral suspension was the common method for reconstruction after total scapulectomy until the early 1990s, when the senior author began using scapular endoprosthetic reconstruction, especially when key shoulder muscles were preserved.
  • A study comparing outcomes between 16 patients with humeral suspensions and 16 with scapular endoprostheses showed that the latter had significantly better functional abilities and cosmetic results.
  • The average Musculoskeletal Tumor Society scores were 78.5% for scapular endoprostheses versus 58.5% for humeral suspensions, with few patients needing cosmetic aids in the endoprosthesis group, leading to the recommendation of this procedure when certain muscles are intact.
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Purpose: We report a prospective randomized study comparing the effects of highly potent and moderately potent topical steroids in treating pediatric phimosis.

Materials And Methods: A total of 70 boys 1 to 12 years old with phimosis were randomly assigned to receive topical application of either betamethasone valerate 0.06% (a highly potent steroid) or clobetasone butyrate 0.

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