Markers of Pulmonary Oxygen Toxicity in Hyperbaric Oxygen Therapy Using Exhaled Breath Analysis

This study hypothesized that similar VOCs might be detected after HBOT. Methods: Ten healthy volunteers of the Royal Netherlands Navy underwent six HBOT sessions (95 min at 253 kPa, including three 5-min “air breaks”), i.e., on five consecutive days followed by another session after 2 days of rest. At 30 min before the dive, and at 30 min, 2 and 4 h post-dive, exhaled breath was collected and followed by PFT. Exhaled breath samples were analyzed using gas chromatography-mass spectrometry (GC-MS). After univariate tests and correlation of retention times, ion fragments could be identified using a reference database. Using these fragments VOCs could be reconstructed, which were clustered using principal component analysis. These clusters were tested longitudinally with ANOVA. Results: After GC-MS analysis, eleven relevant VOCs were identified which could be clustered into two principal components (PC). PC1 consisted of VOCs associated with inflammation and showed no significant change over time. The intensities of PC2, consisting of methyl alkanes, showed a significant decrease (p = 0.001) after the first HBOT session to 50.8%, remained decreased during the subsequent days (mean 82%), and decreased even further after 2 days of rest to 58% (compared to baseline). PFT remained virtually unchanged. Discussion: Although similar VOCs were found when compared to diving, the decrease of methyl alkanes (PC2) is in contrast to the increase seen in divers. It is unknown wh...
Source: Frontiers in Physiology - Category: Physiology Source Type: research

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This study will provide a theoretical basis for industrial applications of modified yam starch.
Source: LWT Food Science and Technology - Category: Food Science Source Type: research
Publication date: Available online 16 August 2019Source: Journal of Food Composition and AnalysisAuthor(s): Gloria Ifeoma Davidson, Henrietta Nkechi Ene-ObongAbstractDocumentation of commonly consumed dishes and their contribution to the energy and nutrient intake of adults in southeast Nigeria were the aims of the study. Twenty communities were selected from the study area using a stratified sampling technique. Twenty-four-hour dietary recall, focus group discussion (FGD) and a 3-day weighed food intake conducted in each of the selected communities were used to collect the data, which were analyzed using percentages, mean...
Source: Journal of Food Composition and Analysis - Category: Food Science Source Type: research
Publication date: December 2019Source: Food Packaging and Shelf Life, Volume 22Author(s): Manokaran Vadivel, Murugesan Sankarganesh, Jeyaraj Dhaveethu Raja, Jegathalaprathaban Rajesh, Dhanuskodi Mohanasundaram, Muthukaruppan AlagarAbstractThe prime objective of the present study is to develop a biodegradable food packaging hybrid film materials from renewable sources. Polyvinyl alcohol (PVA), chitosan (CS), xylan (CC) and hydroxyapatite (nHA) were used as the sources of bio-degradable polymer and curcumin (Cur) as antioxidant agent to prepare an intelligent packaging PVA/CS/CC/nHA hybrid film (PCC) to assess the fish fresh...
Source: Food Packaging and Shelf Life - Category: Food Science Source Type: research
In this study, we determined the impacts of growth pattern to the end of the mating period and sire genetics on the reproductive performance of Merino ewe lambs. Five hundred ewe lambs with full pedigree records were managed under commercial conditions from weaning and weighed 43.5 kg at the start of the mating period with an average age of 224 days. The ewe lambs were offered a moderate or high feed allowance to achieve target growth rates of 100 or 200 g/day during a 46-day mating period. They were then recombined and scanned for pregnancy status 60 days after the mating period. At the individual animal lev...
Source: Small Ruminant Research - Category: Zoology Source Type: research
Conclusions: High screen time was the most prevalent lifestyle risk behavior independently associated with depressive symptoms. Multiple lifestyle changes and improvement of appearance satisfaction should be included in measures targeting adolescents for the prevention and treatment of depressive symptoms. Future studies should elaborate on the gender differences in other adolescent age groups. Appearance satisfaction should be acknowledged as an important confounder in future studies of lifestyle and depressive symptoms. PMID: 31419392 [PubMed - as supplied by publisher]
Source: Nordic Journal of Psychiatry - Category: Psychiatry Tags: Nord J Psychiatry Source Type: research
Publication date: Available online 16 August 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Weina Liu, Xinwei Yang, Youtian Niu, Haoran SunAbstractIn this paper, a sub-wavelength resonance sensor is proposed to microwave detection applications. A meta-material element—multiple split ring resonator (MSRR) is used to improve the sensitivity of the sensor. Therefore, the sensor is based on micro-strip technology and consists of a micro-strip and a MSRR. It is observed that the strongest electric field of the sensor can achieve to 105V/m. So the sensor is very sensitive to capture changes of dielectric signals. ...
Source: Sensors and Actuators A: Physical - Category: Physics Source Type: research
In this report, considering also the literature information, a case of G.sanguinis which is thought to cause meningitis was presented. Our case is a 39-year-old female patient with a lumboperitoneal shunt. The patient was admitted to the neurosurgery clinic with a headache and vision loss and was hospitalized in the service with a pre-diagnosis of pseudotumor cerebri. Neurological examination revealed no pathological findings. Eye examination revealed mild papillary edema, local retinal hemorrhage, and bilateral expansion in retinal vascularization. There was no pathologic findings in the brain magnetic resonance imaging. ...
Source: Mikrobiyoloji Bulteni - Category: Microbiology Tags: Mikrobiyol Bul Source Type: research
Authors: Appak Ö, Manyaslı M, Cengiz MM, Deliloğlu B, Karaoğlu Asrak H, Özlü C, Sayıner AA Abstract The screening for syphilis during pregnancy is important to prevent intrauterine transmission and complications. Prozone phenomenon may cause a false negative result in non-treponemal syphilis tests, which complicates an accurate diagnosis. In this case report a newborn syphilis case was presented to emphasize the importance of reverse algorithm in diagnosis and the prozone phenomenon which can cause problems in rapid plasma reagin (RPR) test. The 2920 g infant patient was born from a 24-year-old m...
Source: Mikrobiyoloji Bulteni - Category: Microbiology Tags: Mikrobiyol Bul Source Type: research
In this study, Mycobacterium avium (n= 77, 17.7%), Mycobacterium intracellulare (n= 70, 16.1%), Mycobacterium szulgai (n= 19, 4.4%), Mycobacterium kansasii (n= 10, 2.3%) ve Mycobacterium smiae (n= 9, 2.1%) were isolated as slowly growing mycobacteria from the pulmonary patients. Susceptibility testing was performed in cation-adjusted Mueller-Hinton broth (CAMH), supplemented with "oleic acid, albumin dextrose catalase" according to CLSI/ M24-A2 guideline recommendations. For the antibiotic susceptibility test, ready-to-use plaque drugs for slow-growing mycobacteria (SLOMYCO-Sensititre, TREK Diagnostic Systems Ltd...
Source: Mikrobiyoloji Bulteni - Category: Microbiology Tags: Mikrobiyol Bul Source Type: research
In this study, it was aimed to compare BKV DNA measurement values performed with two different real-time polymerase chain reaction (PCR) methods and to determine BKV genotypes in renal transplant recipients. Totally, 150 clinical samples tested previously in two different laboratories (Lab-1 and Lab-2) from adult and pediatric renal transplantation patients were included in the study. Fifty plasma samples of 50 different patients from Lab-1, 50 plasma and 50 urine samples of 58 different patients from Lab-2 were included in the study. Viral nucleic acid extraction was performed with automatized systems in Lab-1 and Lab-2 (...
Source: Mikrobiyoloji Bulteni - Category: Microbiology Tags: Mikrobiyol Bul Source Type: research
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