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6 results for “nitric oxide concentration”
Dissolved nitric oxide concentrations and other parameters measured in the Lower Elbe Estuary and the Hamburg Port Area during the RV Ludwig Prandtl Cruise in July 2021
<p>The Elbe River's high nutrient loads and phytoplankton biomass contribute to the complex nutrient turnover processes in the Elbe Estuary, especially within the Port of Hamburg. This campaign aims to investigate the nitrogen turnover processes and nitrous oxide and nitric oxide production in the Elbe Estuary and the Port of Hamburg from 26 to 29 July 2021. Surface water samples were collected on board the RV <em>Ludwig Prandtl</em> using a FerryBox flow-through system. The system, which draws water from approximately 2 meters below the surface through a membrane pump, continuously measured in situ biogeochemical parameters, including dissolved oxygen, pH, salinity, and water temperature. Discrete water samples were collected every 20 minutes for nutrient analysis, chlorophyll a, and dissolved nitric oxide (NO) following established collection, preservation, and storage protocols (Schulz et al., 2022; Norbisrath et al., 2022). Furthermore, nitrous oxide (N2O) concentrations were measured continuously using laser-based off-axis integrated cavity output spectroscopy (OA_ICOS) coupled with a water/gas equilibrator. Additionally, wind speeds at a height of 10 meters were recorded using a MaxiMet GMX600 weather station. Triplicate NO samples were analyzed within 20 minutes of collection, adhering to the method outlined by Lutterbeck and Bange (2015).</p>
Short-term responses to high-dose inhaled corticosteroid treatment in patients with chronic obstructive pulmonary disease having a fractional nitric oxide concentration over 35 parts per billion: a single-center pre-post study
<p>Background: There is currently no strategy to identify chronic obstructive pulmonary disease (COPD) patients whose pulmonary function could benefit from inhaled corticosteroids. This study investigates whether a 28-day regime of inhaled corticosteroids improves pulmonary function test results among chronic obstructive pulmonary disease patients having a fractional exhaled nitric oxide concentration > 35 parts per billion.<br> Methods: This was a single-center one-arm pre–post trial. Chronic obstructive pulmonary disease patients with a fractional exhaled nitric oxide concentration > 35 parts per billion treated at our institution from September 2018 to August 2019 were included. Each patient was administered budesonide (200 μg, 8 puffs daily) for 28 days. The primary outcome measure was the difference between the values of forced expiratory volume in 1 s (FEV1) at baseline and 28 days after inhaled corticosteroid initiation. Secondary outcomes included differences of Chronic Obstructive Pulmonary Disease Assessment Test scores, %FEV1, and that between the percent forced vital capacity at baseline and 28 days after inhaled corticosteroid initiation.<br> Results: Twenty patients were included; all patients completed the 28-day inhaled corticosteroid regime. The mean difference in FEV1 between day 1 and 28 days after inhaled corticosteroid initiation was 340 mL (95% confidence interval: −100 to 770 mL; p = 0.122). The mean differences in secondary outcomes were: % forced vital capacity , −0.16% (95% confidence interval: −2.84 to 2.53%; p = 0.905); %FEV1, 1.63% (95% confidence interval: −4.56 to 7.81%; p = 0.589); Chronic Obstructive Pulmonary Disease Assessment Test score, −2.50 (95% confidence interval: −5.72 to 0.72; p = 0.121).<br> Conclusion: The 28-day course of inhaled corticosteroids showed no significant difference in FEV1 for chronic obstructive pulmonary disease patients having fractional exhaled nitric oxide concentration > 35 parts per billion.<br> </p>
Methemoglobin Concentration in High Dose Inhaled Nitric Oxide
ClinicalTrials.gov study NCT05612074. IPD Sharing: NO. Countries: 1. Publications: 10.
Effect of Prolonged Decubitus on Nitric Oxide Concentration in Chronic Obstructive Pulmonary Disease
ClinicalTrials.gov study NCT01555593. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Gene expression profile of mouse embryonic stem cells (D3-pOCT-mESC) grown in low concentrations of nitric oxide
GEO Series GSE13235. Mus musculus. 9 samples. Type: Expression profiling by array.
Gene expression profile of human embryonic stem cells growth in low concentrations of nitric oxide
GEO Series GSE36609. Homo sapiens. 9 samples. Type: Expression profiling by array.
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