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Inflammation is a comprehensive set of physiological processes that an organism undertakes in response to a wide variety of foreign stimuli, such as viruses, bacteria, and inorganic particles. A key role is played by cytokines, protein-based chemical mediators produced by a broad range of cells, including the immune cells recruited in the inflammation site. The aim of this systematic review is to compare baseline values of pro/anti-inflammatory biomarkers measured in Exhaled Breath Condensate (EBC) in healthy, non-smoking adults to provide a summary of the concentrations reported in the literature. We focused on: interleukin (IL)-1β, IL-4, IL-6, IL-8, IL-10, tumour necrosis factor-alpha (TNF-α), and C reactive protein (CRP). Eligible articles were identified in PubMed, Embase, and Cochrane CENTRAL. Due to the wide differences in methodologies employed in the included articles concerning EBC sampling, storage, and analyses, research protocols were assessed specifically to test their adherence to the ATS/ERS Task Force guidelines on EBC. The development of reference intervals for these biomarkers can result in their introduction and use in both research and clinical settings, not only for monitoring purposes but also, in the perspective of future longitudinal studies, as predictive parameters for the onset and development of chronic diseases with inflammatory aetiology.
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http://dx.doi.org/10.3390/ijms23179820 | DOI Listing |
Cancer Pathog Ther
September 2025
Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27708, United States.
Background: Stereotactic body radiotherapy (SBRT) is an effective treatment for early-stage non-small cell lung cancer. However, patient breathing can affect treatment accuracy. Therefore, this study aimed to develop a bi-polar (BP) gated motion management strategy for SBRT and evaluate its feasibility geometrically and dosimetrically.
View Article and Find Full Text PDFCancer Pathog Ther
September 2025
State Key Laboratory of Oncology in South China, Collaborative Innovation Centre for Cancer Medicine, Guangdong Esophageal Cancer Institute, United Laboratory of Frontier Radiotherapy Technology of Sun Yat-sen University & Chinese Academy of Sciences Ion Medical Technology Co., Guangzhou, Guangdong
Volatile organic compounds (VOCs) are carbon-based chemicals characterized by high vapor pressure and low boiling points under standard temperature and pressure conditions. VOCs are categorized as exogenous or endogenous, depending on their source. Endogenous VOCs are metabolic byproducts eliminated via respiration.
View Article and Find Full Text PDFEnviron Sci Technol
September 2025
School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang 453007, China.
To characterize the bioaccessibility of inhaled organophosphate esters (OPEs) in the respiratory tract, we employed a highly idealized mouth-throat model to investigate the occurrence, distribution, and deposition of 17 OPEs in airborne particulate matter (PM, PM, and PM; = 80 pairs) and gas phases ( = 48) under gradient temperature and humidity. OPEs concentrations were also measured in exhaled breath condensate (EBC; = 50) and sputum ( = 30) from 30 adults. Total median ∑OPEs concentrations in inhaled air were 4.
View Article and Find Full Text PDFFront Physiol
August 2025
School of Mechanical Engineering and IEDT, Kyungpook National University, Daegu, Republic of Korea.
Introduction: Quantitative computed tomography (qCT) provides detailed spatial assessments of lung structure and function, while electrical impedance tomography (EIT) offers high temporal resolution for analyzing breathing patterns but lacks structural detail. This study investigates the correlation between qCT-based spatial variables and EIT-based temporal signals to elucidate the physiological relationships between these two modalities.
Methods: Six participants with asthma underwent pulmonary function tests (PFTs) before and after bronchodilator inhalation.
Nanoscale
September 2025
School of Biochemical Engineering, Indian Institute of Technology (BHU) Varanasi, Uttar Pradesh 221005, India.
Early-stage cancer diagnosis is considered a grand challenge, and even though advanced analytical assays have been established through molecular biology techniques, there are still clinical limitations. For example, low concentration of target biomarkers at early stages of cancer, background values from the healthy cells, individual variation, and factors like DNA mutations, remain the limiting factor in early cancer detection. Volatile organic compound (VOC) biomarkers in exhaled breath are produced during cancer cell metabolism, and therefore may present a promising way to diagnose cancer at the early stage since they can be detected both rapidly and non-invasively.
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