47 research outputs found

    The processing routs of Japanese Kanji words for the Taiwanese learners of Japanese : The comparison of cognates and non-cognates between Japanese-Chinese

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    The purpose of this study was to investigate whether the processing routs of Japanese Kanji words for the Taiwanese learners of Japanese were different between cognates and non-cognates in Japanese-Chinese. Two experiments were performed by using a semantic-decision task. In experiment 1, involving cognates, the interference was shown similar in both the reaction times and the error rates only when the targets were orthographically. This result indicated that the meaning of Japanese Kanji word was accessed directly from orthography or phonology of the Chinese. The phonology of Japanese did not contribute to the accessing of Japanese Kanji word. In experiment 2, involving non-cognates, a significant interaction was observed in both the reaction times and the error rates. This result indicated that the phonology of Japanese did contribute to the accessing of Japanese Kanji word as well as the orthography. It is suggested that the processing routs of Japanese Kanji words varied according to the lexical relationship between Japanese and Chinese

    Interactome-wide analysis identifies end-binding protein 1 as a crucial component for the speck-like particle formation of activated absence in melanoma 2 (AIM2) inflammasomes

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    Inflammasomes are cytoplasmic receptors that can recognize intracellular pathogens or danger signals and are critical for interleukin 1ÎČ production. Although several key components of inflammasome activation have been identified, there has not been a systematic analysis of the protein components found in the stimulated complex. In this study, we used the isobaric tags for relative and absolute quantification approach to systemically analyze the interactomes of the NLRP3, AIM2, and RIG-I inflammasomes in nasopharyngeal carcinoma cells treated with specific stimuli of these interactomes (H2O2, poly (dA:dT), and EBV noncoding RNA, respectively). We identified a number of proteins that appeared to be involved in the interactomes and also could be precipitated with anti-apoptosis-associated speck-like protein containing caspase activation and recruitment domain antibodies after stimulation. Among them, end binding protein 1 was an interacting component in all three interactomes. Silencing of end binding protein 1 expression by small interfering RNA inhibited the activation of the three inflammasomes, as indicated by reduced levels of interleukin 1ÎČ secretion. We confirmed that end binding protein 1 directly interacted with AIM2 and ASC in vitro and in vivo. Most importantly, fluorescence confocal microscopy showed that end binding protein 1 was required for formation of the speck-like particles that represent activation of the AIM2 inflammasome. In nasopharyngeal carcinoma tissues, immunohistochemical staining showed that end binding protein 1 expression was elevated and significantly correlated with AIM2 and ASC expression in nasopharyngeal carcinoma tumor cells. In sum, we profiled the interactome components of three inflammasomes and show for the first time that end binding protein 1 is crucial for the speck-like particle formation that represents activated inflammasomes

    Tumour inflammasome-derived IL-1b recruits neutrophils and improves local recurrence-free survival in EBV-induced nasopharyngeal carcinoma

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    Inflammasomes sense infection and cellular damage and are critical for triggering inflammation through IL-1ÎČ production. In carcinogenesis, inflammasomes may have contradictory roles through facilitating antitumour immunity and inducing oncogenic factors. Their function in cancer remains poorly characterized. Here we show that the NLRP3, AIM2 and RIG-I inflammasomes are overexpressed in Epstein-Barr virus (EBV)-associated nasopharyngeal carcinoma (NPC), and expression levels correlate with patient survival. In tumour cells, AIM2 and RIG-I are required for IL-1ÎČ induction by EBV genomic DNA and EBV-encoded small RNAs, respectively, while NLRP3 responds to extracellular ATP and reactive oxygen species. Irradiation and chemotherapy can further activate AIM2 and NLRP3, respectively. In mice, tumour-derived IL-1ÎČ inhibits tumour growth and enhances survival through host responses. Mechanistically, IL-1ÎČ-mediated anti-tumour effects depend on infiltrated immunostimulatory neutrophils. We show further that presence of tumour-associated neutrophils is significantly associated with better survival in NPC patients. Thus, tumour inflammasomes play a key role in tumour control by recruiting neutrophils, and their expression levels are favourable prognostic markers and promising therapeutic targets in patients

    4ÎČ-Hydroxywithanolide E from Physalis peruviana (golden berry) inhibits growth of human lung cancer cells through DNA damage, apoptosis and G2/M arrest

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    <p>Abstract</p> <p>Background</p> <p>The crude extract of the fruit bearing plant, <it>Physalis peruviana </it>(golden berry), demonstrated anti-hepatoma and anti-inflammatory activities. However, the cellular mechanism involved in this process is still unknown.</p> <p>Methods</p> <p>Herein, we isolated the main pure compound, 4ÎČ-Hydroxywithanolide (4ÎČHWE) derived from golden berries, and investigated its antiproliferative effect on a human lung cancer cell line (H1299) using survival, cell cycle, and apoptosis analyses. An alkaline comet-nuclear extract (NE) assay was used to evaluate the DNA damage due to the drug.</p> <p>Results</p> <p>It was shown that DNA damage was significantly induced by 1, 5, and 10 ÎŒg/mL 4ÎČHWE for 2 h in a dose-dependent manner (<it>p </it>< 0.005). A trypan blue exclusion assay showed that the proliferation of cells was inhibited by 4ÎČHWE in both dose- and time-dependent manners (<it>p </it>< 0.05 and 0.001 for 24 and 48 h, respectively). The half maximal inhibitory concentrations (IC<sub>50</sub>) of 4ÎČHWE in H1299 cells for 24 and 48 h were 0.6 and 0.71 ÎŒg/mL, respectively, suggesting it could be a potential therapeutic agent against lung cancer. In a flow cytometric analysis, 4ÎČHWE produced cell cycle perturbation in the form of sub-G<sub>1 </sub>accumulation and slight arrest at the G<sub>2</sub>/M phase with 1 ÎŒg/mL for 12 and 24 h, respectively. Using flow cytometric and annexin V/propidium iodide immunofluorescence double-staining techniques, these phenomena were proven to be apoptosis and complete G<sub>2</sub>/M arrest for H1299 cells treated with 5 ÎŒg/mL for 24 h.</p> <p>Conclusions</p> <p>In this study, we demonstrated that golden berry-derived 4ÎČHWE is a potential DNA-damaging and chemotherapeutic agent against lung cancer.</p

    Genotype-phenotype correlation in Taiwanese children with diazoxide-unresponsive congenital hyperinsulinism

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    ObjectiveCongenital hyperinsulinism (CHI) is a group of clinically and genetically heterogeneous disorders characterized by dysregulated insulin secretion. The aim of the study was to elucidate genetic etiologies of Taiwanese children with the most severe diazoxide-unresponsive CHI and analyze their genotype-phenotype correlations.MethodsWe combined Sanger with whole exome sequencing (WES) to analyze CHI-related genes. The allele frequency of the most common variant was estimated by single-nucleotide polymorphism haplotype analysis. The functional effects of the ATP-sensitive potassium (KATP) channel variants were assessed using patch clamp recording and Western blot.ResultsNine of 13 (69%) patients with ten different pathogenic variants (7 in ABCC8, 2 in KCNJ11 and 1 in GCK) were identified by the combined sequencing. The variant ABCC8 p.T1042QfsX75 identified in three probands was located in a specific haplotype. Functional study revealed the human SUR1 (hSUR1)-L366F KATP channels failed to respond to intracellular MgADP and diazoxide while hSUR1-R797Q and hSUR1-R1393C KATP channels were defective in trafficking. One patient had a de novo dominant mutation in the GCK gene (p.I211F), and WES revealed mosaicism of this variant from another patient.ConclusionPathogenic variants in KATP channels are the most common underlying cause of diazoxide-unresponsive CHI in the Taiwanese cohort. The p.T1042QfsX75 variant in the ABCC8 gene is highly suggestive of a founder effect. The I211F mutation in the GCK gene and three rare SUR1 variants associated with defective gating (p.L366F) or traffic (p.R797Q and p.R1393C) KATP channels are also associated with the diazoxide-unresponsive phenotype

    International Consensus Statement on Rhinology and Allergy: Rhinosinusitis

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    Background: The 5 years since the publication of the first International Consensus Statement on Allergy and Rhinology: Rhinosinusitis (ICAR‐RS) has witnessed foundational progress in our understanding and treatment of rhinologic disease. These advances are reflected within the more than 40 new topics covered within the ICAR‐RS‐2021 as well as updates to the original 140 topics. This executive summary consolidates the evidence‐based findings of the document. Methods: ICAR‐RS presents over 180 topics in the forms of evidence‐based reviews with recommendations (EBRRs), evidence‐based reviews, and literature reviews. The highest grade structured recommendations of the EBRR sections are summarized in this executive summary. Results: ICAR‐RS‐2021 covers 22 topics regarding the medical management of RS, which are grade A/B and are presented in the executive summary. Additionally, 4 topics regarding the surgical management of RS are grade A/B and are presented in the executive summary. Finally, a comprehensive evidence‐based management algorithm is provided. Conclusion: This ICAR‐RS‐2021 executive summary provides a compilation of the evidence‐based recommendations for medical and surgical treatment of the most common forms of RS

    Overview of the phonological processing researches on Bilingualism

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    The purpose of this article was to discuss the role of phonological processing on word recognition of the second language that has been indicated in the first language. In the first section, the history of bilingual memory representation researches were reviewed. Some problems were described based on the criticism of the previous researches reviewed and the words type effects investigated in cross-languages. Then, after referring to the role of phonological processing on word recognition of the first language, the neglected roles of phonology on bilinguals' lexical processing were discussed based on introducing the previ-ous researches. Finally, some proposals for the phonological processing researches on bi-lingualism were discussed

    Delayed Diagnosis in an Elderly Schizophrenic Patient with Catatonic State and Pulmonary Embolism

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    Catatonia is a syndrome with any two of five core features: stupor/motoric immobility/catalepsy/waxy flexibility, excitement, negativism/mutism, posturing, and echolalia/echopraxia. We describe a case of delayed diagnosis of pulmonary embolism with an atypical presentation in an elderly schizophrenia male patient, which led to a life-threatening brain infarction. A 75-year-old male was hospitalized in a psychiatric ward because of stupor, poor intake and mutism under a diagnosis of recurrent catatonia. His inability to express his suffering, dehydration, exacerbation of chronic obstructive pulmonary disease, and upper gastrointestinal bleeding, however, made an accurate diagnosis difficult. Finally, the high D-dimer level and further chest computed tomography confirmed pulmonary embolism in the trunk of the bilateral main pulmonary arteries. The brain computed tomography also confirmed brain infarcts. He was transferred to the cardiac intensive care unit and was eventually rescued from near death due to pulmonary embolism and brain infarction. A careful differential diagnosis for pulmonary embolism-induced delirium and catatonic state is important in the treatment of patients with a previous diagnosis of catatonic schizophrenia
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