1,072 results match your criteria: "Center for Environmental Medicine[Affiliation]"

Article Synopsis
  • CAR-T-cell therapy has shown promise in treating certain blood cancers, but issues like resistance, relapse, and severe side effects still pose challenges.
  • Traditional analysis methods have limited our understanding of how CAR-T-cells and leukemia cells interact, but single-cell sequencing offers new insights into these complex dynamics.
  • This review aims to explore the biological features of CAR-T-cells and the mechanisms behind their clinical successes and failures, with the goal of enhancing treatment strategies and outcomes.
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  • - The study investigates the prevalence of sessile serrated lesions (SSLs) in individuals under 50 compared to those 50 and older, finding similar rates of SSLs (7.2% vs. 6.5%) across age groups despite younger individuals having fewer adenomas.
  • - Key predictors of SSL detection in the younger group include being 40-49 years old, longer withdrawal times during colonoscopy, and the skill level of the endoscopist.
  • - The findings suggest SSLs are fairly common in younger people, highlighting the need for experienced endoscopy to improve detection, and call for further research on the significance of SSLs in this age group.
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Hepatitis C virus infection associated with coronary and thoracic aortic atherosclerosis.

Am J Med Sci

September 2024

Division of Hepatobiliary, Department of Internal Medicine, Kaohsiung Medical University Hospital; School of Medicine and Hepatitis Research Center, College of Medicine and Center for Liquid Biopsy and Cohort Research, Kaohsiung Medical University, Kaohsiung, Taiwan; School of Medicine and Doctoral Program of Clinical and Experimental Medicine, College of Medicine and Center of Excellence for Metabolic Associated Fatty Liver Disease, National Sun Yat-sen University, Kaohsiung, Taiwan. Electronic address:

Background: Coronary and thoracic aortic calcification was associated with stroke, coronary heart, and peripheral vascular disease. Hepatitis C virus (HCV) infection is significantly associated with insulin resistance, diabetes mellitus and hepatic steatosis. We aimed to investigate the relationship between HCV infection and coronary, thoracic aortic atherosclerosis.

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Article Synopsis
  • The study investigates if inhaling endotoxin (LPS) causes immediate changes in cardiovascular function due to systemic inflammation.
  • Fifteen adult volunteers inhaled a specific amount of LPS, with blood and lung samples taken before and after exposure to assess various cardiovascular measures.
  • Results showed that while LPS inhalation increased levels of certain immune cells, it did not lead to significant changes in blood pressure or heart function in healthy adults, indicating the need for further research on other particulate matter components.
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Background: Observational studies and meta-analyses have indicated associations between blood lipid profiles and asthma. However, the causal association is unknown. Therefore, this study investigated the causal relationship between blood lipid profiles and asthma using bidirectional Mendelian randomization analysis.

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In this study, we compared 12 mm cell culture inserts with permeable polyester membranes (0.4 μm pores) from two different manufacturers: CELLTREAT® and Corning®. Physical dimensions and masses of the inserts were found to be very similar between the two brands, with CELLTREAT® inserts having a slightly smaller diameter and growth area (11.

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  • The airway microbiome may influence the development and progression of chronic obstructive pulmonary disease (COPD), but its impact on milder cases remains unclear.
  • The study analyzed sputum DNA from 877 participants, mostly with milder COPD (stages 0-2), to examine the relationship between microbiome characteristics and various health markers.
  • It found that greater diversity in the airway microbiome correlated with better lung function and fewer symptoms, while lower diversity was linked to worse outcomes, suggesting that microbiome features could help predict lung health over time.
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Surgical smoke and its components, effects, and mitigation: a contemporary review.

Toxicol Sci

March 2024

Center for Environmental Medicine, Asthma and Lung Biology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.

Energy-based surgical instruments produce surgical smoke, which contains harmful byproducts, such as polycyclic aromatic hydrocarbons, volatile organic compounds, particulate matter, and viable microorganisms. The research setting has shifted from the laboratory to the operating room. However, significant heterogeneity in the methods of detection and placement of samplers, diversity in the tissue operated on, and types of surgeries tested has resulted in variability in detected levels and composition of surgical smoke.

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Degradation of antibiotics through electrocatalytic oxidation has recently been comprehended as a promising strategy in wastewater treatment. Herein, nitrogen and sulphur doped graphene oxide (N,S-rGO) nanosheets were synthesized and employed as metal-free anodic material for electrochemical degradation of antibiotics, viz. metronidazole (MNZ) and tetracycline (TC).

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The purpose of this study was to investigate genetic factors associated with metabolic syndrome (MetS) by conducting a large-scale genome-wide association study (GWAS) in Taiwan, addressing the limited data on Asian populations compared to Western populations. Using data from the Taiwan Biobank, comprehensive clinical and genetic information from 107,230 Taiwanese individuals was analyzed. Genotyping data from the TWB1.

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Diesel exhaust particles induce polarization state-dependent functional and transcriptional changes in human monocyte-derived macrophages.

Am J Physiol Lung Cell Mol Physiol

January 2024

Curriculum in Toxicology & Environmental Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States.

Macrophage populations exist on a spectrum between the proinflammatory M1 and proresolution M2 states and have demonstrated the ability to reprogram between them after exposure to opposing polarization stimuli. Particulate matter (PM) has been repeatedly linked to worsening morbidity and mortality following respiratory infections and has been demonstrated to modify macrophage function and polarization. The purpose of this study was to determine whether diesel exhaust particles (DEP), a key component of airborne PM, would demonstrate polarization state-dependent effects on human monocyte-derived macrophages (hMDMs) and whether DEP would modify macrophage reprogramming.

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Objective: Due to recent increases in the use of vaping devices, there is a high demand for research addressing the respiratory health effects of vaping products. Given the constantly changing nature of the vaping market with new devices, flavors, metals, and other chemicals rapidly emerging, there is a need for inexpensive and highly adaptable vaping device exposure systems. Here, we describe the design and validation of a novel aerosol exposure system for toxicity testing of vaping devices.

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Article Synopsis
  • The study investigates the relationship between air pollution and the development of preschool asthma in infants who had acute bronchiolitis, which is a respiratory condition.
  • Conducted at Kaohsiung Medical University Hospital from 2009 to 2019, the research involved a retrospective analysis of 2,637 children and examined air pollutant levels (like PM and NO) in the months after their bronchiolitis episode.
  • Results showed significant associations between exposure to these pollutants and an increased risk of developing asthma, particularly with certain types of particulate matter and nitrogen oxides.
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Weed, sex and influenza.

ERJ Open Res

November 2023

Curriculum in Toxicology and Environmental Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

https://bit.ly/46qpTis.

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Non-cystic fibrosis bronchiectasis (NCFB) may originate in bronchiolar regions of the lung. Accordingly, there is a need to characterize the morphology and molecular characteristics of NCFB bronchioles. Test the hypothesis that NCFB exhibits a major component of bronchiolar disease manifest by mucus plugging and ectasia.

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Adaptation behaviors modify the effects of body fat on heat-related symptoms among Taiwanese elderly.

Int J Hyg Environ Health

January 2024

Department of Environmental and Occupational Medicine, National Taiwan University (NTU) College of Medicine and NTU Hospital, Taipei, Taiwan; National Institute of Environmental Sciences, National Health Research Institutes, Miaoli County, Taiwan; Institute of Environmental and Occupational Health Sciences, National Taiwan University, Taipei, 100, Taiwan. Electronic address:

Background: The aging process increases body fat and susceptibility to heat-related illnesses. The relationship between body composition and symptoms associated with exposure to extreme heat among the elderly is unclear. Additionally, the influence of individual adaptive behaviors in mitigating these risks has not been adequately explored.

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Respiratory Health Effects of Air Pollutants.

Immunol Allergy Clin North Am

February 2024

Division of Pediatric Allergy & Immunology and, Center for Environmental Medicine, Asthma and Lung Biology, The School of Medicine, The University of North Carolina at Chapel Hill, UNC School of Medicine, 104 Mason Farm Road, CB#7310, Chapel Hill, NC 27599-7310, USA. Electronic address:

Air pollution is a risk factor for asthma and respiratory infection. Avoidance of air pollution is the best approach to mitigating the impacts of pollution. Personal preventive strategies are possible, but policy interventions are the most effective ways to prevent pollution and its effect on asthma and respiratory infection.

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Extracellular vesicle (EV)-mediated intercellular communication significantly influences pulmonary cell health and disease, yet methods to investigate these mechanisms are limited. We hypothesize that organotypic models of the airway can be leveraged to investigate EV-mediated intercellular signaling, focusing on EV proteomic content as a case study. Two airway culture models were evaluated by mass spectrometry-based proteomics analysis: a tri-culture model consisting of alveolar epithelial, fibroblast, and lung microvascular endothelial cells and a co-culture model of alveolar epithelial and fibroblasts.

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Vaping-Induced Proteolysis Causes Airway Surface Dehydration.

Int J Mol Sci

October 2023

Division of Genetic, Environmental and Inhalational Disease, Department of Internal Medicine, Kansas University Medical Center, Kansas City, KS 66103, USA.

Article Synopsis
  • Proteases, particularly neutrophil elastase, activate the epithelial sodium channel (ENaC) and contribute to dehydration in the airways, which is a concern for lung health.
  • This study investigates how higher levels of proteases in the airways of vapers affect ENaC activity and hydration by exposing human bronchial epithelial cultures to fluid from non-smokers, smokers, and vapers.
  • Results showed that the airway surface liquid height decreased significantly in vapers and smokers, indicating airway dehydration, and similar effects were linked to e-liquid exposure, suggesting that vaping could lead to lung diseases similar to those caused by smoking.
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Article Synopsis
  • This cohort study investigated the relationship between air pollution and the incidence of dementia in stroke patients, emphasizing dysphagia as a potential predictor for developing dementia.
  • The research used data from Kaohsiung Medical University Hospital in Taiwan, analyzing air pollution levels before and after dysphagia was identified.
  • Results indicated that stroke patients with dysphagia had a higher likelihood of dementia, and exposure to specific air pollutants like PM2.5 and nitrogen oxides also increased dementia risk.
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Background: Air pollutants, including particulates from wood smoke, are a significant cause of exacerbation of lung disease. γ-Tocopherol is an anti-inflammatory isoform of vitamin E that has been shown to reduce allergen-, ozone-, and endotoxin-induced inflammation.

Objective: The objective of this study was to determine whether γ-tocopherol would prevent experimental wood smoke-induced airway inflammation in humans.

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Although blood pressure variability (BPV) and reperfusion are associated with parenchymal hematoma (PH) after stroke, the relationship between BPV and PH in atrial fibrillation (AF) patients who are at risk of reperfusion injury with frequent spontaneous recanalization is unknown. This study aimed to investigate whether BPV within the first 48 h is associated with PH within 72 h in patients with AF and stroke in terms of major vessel occlusion status. A total of 131 patients with AF that were admitted within 24 h after stroke onset were enrolled.

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Article Synopsis
  • This study focuses on measuring lung deposits of black carbon, which is essential for linking health effects caused by combustion particles to air quality standards.
  • The researchers used a novel method called macrophage carbon load (MaCL) and developed a machine-learning algorithm (MacLEAP) to quickly assess carbon presence in lung cells, addressing the challenges of manual counting in large studies.
  • Results showed that the algorithm effectively correlated with environmental pollution levels and health markers, making it a promising tool for future epidemiological research on air quality and health impacts.
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Background: Environmental exposure to peanut through non-oral routes is a risk factor for peanut allergy. Early-life exposure to air pollutants, including particulate matter (PM), is associated with sensitization to foods through unknown mechanisms. We investigated whether PM promotes sensitization to environmental peanut and the development of peanut allergy in a mouse model.

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