Publications by authors named "Chunnin Lee"

Introduction: Diabetes mellitus (DM) is a known risk factor for tuberculosis (TB), leading to an approximate three-fold higher risk of developing active TB. However, epidemiological studies on the prevalence of latent TB infection (LTBI) in DM patients are lacking. In this study, we investigated the presence of LTBI and determined risk factors for LTBI in DM patients.

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  • * Findings reveal that higher levels of PM and nitrogen oxides (NO) in the air significantly increase the odds of developing TB, with the strongest association seen in the alveolar region of the lungs, where a 1-μg/m increase in PM corresponds to a nearly 4-fold increase in risk.
  • * Conversely, an increase in oxygen levels was shown to decrease the risk of TB, highlighting the complex relationship between air quality and respiratory diseases.
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  • * A study involving 63 lung cancer patients and 31 congestive heart failure patients found that higher levels of PM and zinc (Zn) correlate with an increased risk of malignant pleural effusion.
  • * Specifically, each increase in PM (1 μg/m) and Zn (1 ng/mL) was associated with a higher likelihood of developing malignant pleural effusion in lung cancer patients.
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A molecular imaging probe comprising superparamagnetic iron oxide (SPIO) nanoparticles and Mycobacterium tuberculosis surface antibody (MtbsAb) was synthesized to enhance imaging sensitivity for extrapulmonary tuberculosis (ETB). An SPIO nanoprobe was synthesized and conjugated with MtbsAb. The purified SPIO-MtbsAb nanoprobe was characterized using TEM and NMR.

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Background: The study compared the predictive outcomes of artificial neural network, support vector machine and random forest on the occurrence of anti-tuberculosis drug-induced hepatotoxicity.

Methods: The clinical and genomic data of patients treated with anti-tuberculosis drugs at Taipei Medical University-Wanfang Hospital were used as training sets, and those at Taipei Medical University-Shuang Ho Hospital served as test sets. Features were selected through a univariate risk factor analysis and literature evaluation.

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Epidemiological evidence has shown that air pollution is associated with chronic obstructive pulmonary disease (COPD). The objective of this study was to investigate the effects of air pollution on patients with COPD and pneumonia. A case-control study of patients who had undergone thoracentesis for pleural effusion drainage in a hospital was recruited for this study.

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  • * The study found that increased levels of air pollutants corresponded to significant decreases in critical biomarkers, such as CD62 and molybdenum, indicating potential immune dysregulation.
  • * Overall, the findings suggest a concerning relationship between air pollution exposure and health outcomes in pneumonia patients, emphasizing the need for further investigation into these effects.
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Introduction: In vitro models have demonstrated immune-modulating effects of bevacizumab (BEV). Combinations of an EGFR tyrosine kinase inhibitor (TKI) with BEV improve progression-free survival (PFS) in patients with EGFR-mutated lung adenocarcinoma. How BEV confers this clinical effect and the underlying mechanisms of its effect are not clear.

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Background: Monocytic myeloid-derived suppressor cells (MDSCs), particularly the S100A9+ subset, has been shown initial clinical relevance. However, its role in EGFR-mutated lung adenocarcinoma, especially to EGFR-tyrosine kinase inhibitor (EGFR-TKI) is not clear. In a clinical setting of EGFR mutated lung adenocarcinoma, a role of the MDSC apart from T cell suppression was also investigated.

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Particulate matter (PM) modulates the expression of autophagy; however, the role of selective autophagy by PM remains unclear. The objective of this study was to determine the underlying mechanisms in protein oxidation and degradation caused by PM. Human epithelial A549 cells were exposed to diesel exhaust particles (DEPs), urban dust (UD), and carbon black (CB; control particles).

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Lymphocytic pleurisy is commonly observed in tuberculosis and cancer. Noninvasive biomarkers are needed to distinguish tuberculous pleural effusion (TPE) from malignant pleural effusion (MPE) because current clinical diagnostic procedures are often invasive. We identified immune response biomarkers that can discriminate between TPE and MPE.

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Emerging risk factors for tuberculosis (TB) infection, such as air pollution, play a significant role at both the individual and population levels. However, the association between air pollution and TB remains unclear. The objective of this study was to examine the association between outdoor air pollution and sputum culture conversion in TB patients.

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Objective: Smoking has been associated with tuberculosis (TB); however, the effects of smoking on the effectiveness of TB treatment remain unclear.

Materials And Methods: Data were retrieved from case notes and interviews of subjects registered in the TB-reporting system from 2010 to 2012. Study cases were defined as subjects with TB-positive sputum cultures, whereas the controls were defined as subjects with non-TB-related pulmonary diseases.

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Background: Twenty-five to 40% of patients pass a spontaneous breathing trial (SBT) but fail to wean from mechanical ventilation. There is no single appropriate and convenient predictor or method that can help clinicians to accurately predict weaning outcomes. This study designed an artificial neural network (ANN) model for predicting successful extubation in mechanically ventilated patients.

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Background And Purpose: Patients with chronic obstructive pulmonary disease (COPD) are at higher risk of stroke than those without COPD. This study aims to explore the impact of inhaled pharmacotherapy on stroke risk in COPD patients during a three-year follow-up, using a nationwide, population-based study and a matched cohort design.

Methods: The study cohort comprised 10,413 patients who had received COPD treatment between 2004 and 2006; 41,652 randomly selected subjects comprised the comparison cohort.

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  • Cisplatin and carboplatin can harm the kidneys by creating harmful platinum-DNA complexes, leading to cell death and various levels of kidney dysfunction.
  • A study of 116 Taiwanese lung cancer patients identified genetic variations (specifically in ERCC1 and TP53) that increase the risk of nephrotoxicity, alongside factors like the type of platinum drug used and the patient's baseline kidney health.
  • The research used advanced statistical models, achieving high prediction rates (over 82%) for assessing individual risk of kidney damage from these chemotherapy drugs, suggesting these genetic factors can guide treatment strategies.
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Background/purpose: Long-term oxygen therapy has become standard treatment for patients with chronic respiratory insufficiency. However, patterns of long-term home oxygen therapy have not been well studied in Taiwan. Oxygen concentrator systems are commonly used in Taiwan, but liquid oxygen delivery systems are portable and may provide advantages over the concentrator system.

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A considerable amount of studies have been conducted to investigate the interactions of biological fluids with nanoparticle surfaces, which exhibit a high affinity for proteins and particles. However, the mechanisms underlying these interactions have not been elucidated, particularly as they relate to human health. Using bovine serum albumin (BSA) and mice bronchoalveolar lavage fluid (BALF) as models for protein-particle conjugates, we characterized the physicochemical modifications of carbon blacks (CB) with 23nm or 65nm in diameter after protein treatment.

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Considerable evidence shows a key role for protein modification in the adverse effects of chemicals; however, the interaction of diesel exhaust particles (DEP) with proteins and the resulting biological activity remains unclear. DEP and carbon black (CB) suspensions with and without bovine serum albumin (BSA) were used to elucidate the biological effects of air pollutants. The DEP and CB samples were then divided into suspensions and supernatants.

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  • * A total of 302 TB patients were analyzed, revealing that factors like age, tobacco consumption, liver disease, and ethambutol dosage were linked to lower cure rates.
  • * Smoking, particularly high levels of consumption, significantly hindered treatment effectiveness, highlighting the need for smoking cessation programs in TB treatment strategies.
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Hepatocelluar carcinoma (HCC) is the most lethal cancer in the world. Most HCC over-express c-Myc, which plays a critical role in regulating cellular growth, differentiation and apoptosis in both normal and neoplastic cells. c-Myc is among the most frequently overexpressed genes in human cancers.

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Background: Mannose-binding lectin (MBL) deficiency is associated with susceptibility to respiratory infections. We investigated the impact of MBL2 gene polymorphisms and MBL deficiency on the recurrence of infective exacerbation in patients with COPD.

Methods: A prospective study was conducted among 215 patients with COPD and 137 healthy subjects.

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Massive hemoptysis is described in many disease processes. However, a mediastinal teratoma is rarely considered in a patient presenting with massive hemoptysis. Since a mediastinal teratoma has no specific symptoms, its definitive diagnosis is difficult before surgical intervention.

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