Results 51 to 60 of about 23,771,265 (342)

Photoacoustic Spectroscopy for the Determination of Lung Cancer Biomarkers—A Preliminary Investigation

Sensors, 2017
With 1.6 million deaths per year, lung cancer is one of the leading causes of death worldwide. One reason for this high number is the absence of a preventive medical examination method. Many diagnoses occur in a late cancer stage with a low survival rate.
Yannick Saalberg, Henry Bruhns, Marcus Wolff   +2 more
doaj   +1 more source

Breath Analysis of COVID-19 Patients in a Tertiary UK Hospital by Optical Spectrometry: The E-Nose CoVal Study

Biosensors, 2023
Throughout the SARS-CoV-2 pandemic, diagnostic technology played a crucial role in managing outbreaks on a national and global level. One diagnostic modality that has shown promise is breath analysis, due to its non-invasive nature and ability to give a ...
Steven Laird, Luke Debenham, Danny Chandla, Cathleen Chan, Emma Daulton, Johnathan Taylor, Palashika Bhat, Lisa Berry, Peter Munthali, James A. Covington   +9 more
doaj   +1 more source

A modeling-based evaluation of isothermal rebreathing for breath gas analyses of highly soluble volatile organic compounds

, 2011
Isothermal rebreathing has been proposed as an experimental technique for estimating the alveolar levels of hydrophilic volatile organic compounds (VOCs) in exhaled breath.
Amann, Anton, Hinterhuber, Hartmann, King, Julian, Koc, Helin, Mochalski, Pawel, Teschl, Gerald, Teschl, Susanne, Unterkofler, Karl   +7 more
core   +1 more source

Breath Analysis Using Laser Spectroscopic Techniques: Breath Biomarkers, Spectral Fingerprints, and Detection Limits

Sensors, 2009
Breath analysis, a promising new field of medicine and medical instrumentation, potentially offers noninvasive, real-time, and point-of-care (POC) disease diagnostics and metabolic status monitoring.
Peeyush Sahay, Chuji Wang
doaj   +1 more source

Comparison of Targeted and Untargeted Approaches in Breath Analysis for the Discrimination of Lung Cancer from Benign Pulmonary Diseases and Healthy Persons

Molecules, 2021
The aim of the present study was to compare the efficiency of targeted and untargeted breath analysis in the discrimination of lung cancer (Ca+) patients from healthy people (HC) and patients with benign pulmonary diseases (Ca−).
Michalis Koureas, Dimitrios Kalompatsios, Grigoris D. Amoutzias, Christos Hadjichristodoulou, Konstantinos Gourgoulianis, Andreas Tsakalof   +5 more
doaj   +1 more source

Radiotherapy Delivery in Deep Inspiration for Pediatric Patients—Final Results of the Phase II Feasibility Study TEDDI

Pediatric Blood &Cancer, EarlyView.
Abstract Introduction The TEDDI trial tested the feasibility and reproducibility of deep‐inspiration breath‐hold (DIBH) in pediatric patients referred for radiotherapy. This report presents final results, including patient‐reported outcomes (PRO) and dosimetric comparison of DIBH and free‐breathing (FB).
Daniella Elisabet Østergaard, Anni Young Lundgaard, Laura Ann Rechner, Danijela Dejanovic, Hanne Krogh Rose, Jolanta Hansen, Leila Vaalavirta, Miia Mokka, Marianne Aznar, Peder Skov Wehner, Lisa Lyngsie Hjalgrim, Maja Vestmø Maraldo   +11 more
wiley   +1 more source

Linking a polyketide synthase gene cluster to 6-pentyl-alpha-pyrone, a Trichoderma metabolite with diverse bioactivities

Microbial Cell Factories
Background Members of the fungal genus Trichoderma are well-known for their mycoparasitic and plant protecting activities, rendering them important biocontrol agents.
Daniel Flatschacher, Alexander Eschlböck, Siebe Pierson, Ulrike Schreiner, Valentina Stock, Arne Schiller, David Ruso, Maria Doppler, Veronika Ruzsanyi, Mario Gründlinger, Christoph Büschl, Rainer Schuhmacher, Susanne Zeilinger   +12 more
doaj   +1 more source

Breathing Rhythm Variations during Wash-In Do Not Influence Exhaled Volatile Organic Compound Profile Analyzed by an Electronic Nose

Molecules, 2021
E-noses are innovative tools used for exhaled volatile organic compound (VOC) analysis, which have shown their potential in several diseases. Before obtaining a full validation of these instruments in clinical settings, a number of methodological issues ...
Silvano Dragonieri, Vitaliano Nicola Quaranta, Pierluigi Carratù, Teresa Ranieri, Enrico Buonamico, Giovanna Elisiana Carpagnano   +5 more
doaj   +1 more source

Gauging circadian variation in ketamine metabolism by real-time breath analysis [PDF]

, 2017
The time-of-day of drug application is an important factor in maximizing efficacy and minimizing toxicity. Real-time in vivo mass spectrometric breath analysis of mice was deployed to investigate time-of-day variation in ketamine metabolism.
Brown, S. A., Dallmann, Robert, Kohler, M., Martinez-Lozano Sinues, P., Zenobi, R.   +4 more
core   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source