Sökning: "nasal nitric oxide"

Visar resultat 1 - 5 av 20 avhandlingar innehållade orden nasal nitric oxide.

1. 1. Nitric oxide within the concept of united airway disease : Exhaled and nasal nitric oxide in cystic fibrosis, asthma and upper airway inflammatory diseases

   Författare :Christina Krantz; Andrei Malinovschi; Kjell Alving; Celeste Porsbjerg; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; nitric oxide; nasal NO; exhaled NO; asthma; cystic fibrosis; airway inflammation; upper airway inflammatory disorders; united airway disease; IgE sensitisation; Lungmedicin; Lung Medicine; Pediatrik; Pediatrics;

   Sammanfattning : Background: Within the concept of united airway disease, it is postulated that inflammatory disorders in the upper and lower airways are interrelated and influence each other. Fractional exhaled nitric oxide (FeNO) is an established biomarker of type-2 inflammation in the lower airways and is elevated in patients with asthma. LÄS MER

3. 2. Exhaled Nitric Oxide in epidemiological and experimental studies

   Författare :Anna-Carin Olin; Göteborgs universitet; []
   Nyckelord :Nitric oxide; exhaled air; nasal nitric oxide; ozone; pulp-mill; gassings; nitrate; ; atopy; sensitization; asthma; rhinitis; bronchiolitis;

   Sammanfattning : The overall purpose with this thesis has been to contribute to the assessment of theutility of exhaled nitric oxide (eNO) in epidemiological studies. The specific aims have been toinvestigate whether eNO increases after occupational exposure to high peaks of ozone, or afterexperimental exposure to ozone in ambient concentrations. LÄS MER

4. 3. Sensory neuropeptides and nitric oxide in nasal vascular regulation

   Författare :Johan Rinder; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Sensory nerves; neuropeptides; nasal mucosa; nitric oxide; vascular regulation; acoustic rhinometry; NK1-receptors; CGRP-receptors; vanilloid receptors; capsaicin; lactic acid; exercise; a-adrenoceptor agonists; pig; human.;

   Sammanfattning : The role of sensory neuropeptides and nitric oxide in vascular regulation was investigated in the pig nasal mucosa in vivo using arterial blood flow measurements and acoustic rhinometry for analysis of capacitance function. Moreover, the effects of heavy physical exercise, a-adrenoceptor agonists, nitric oxide synthase (NOS) inhibition, L-arginine, nitric oxide (NO) gas, histamine and capsaicin on nasal cavity NO levels and nasal cavity volume, were investigated in healthy subjects. LÄS MER

5. 4. Exhaled nitric oxide in schoolchildren with asthma

   Författare :Christophe Pedroletti; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Asthma; rhinitis; children; nitric oxide; allergen provocation; steroids.;

   Sammanfattning : Background: The fraction of nitric oxide in exhaled air (FENO) is believed to reflect the degree of allergic inflammation present in the lower airways. The diffusing capacity of NO in the airways (DawNO) and the concentration of this gas in the airway wall (FawNO) can be evaluated by determining FENO with different exhalation flow-rates. LÄS MER

7. 5. Nasal airway nitric oxide : methodological aspects and influence of inflammation

   Författare :Jörgen Palm; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Asthma; breath test; exhaled air; rhinitis; sinuses; sinusitis; diurnal variation; gender; nasal; oral; nitric oxide; volume flow rate; AIDS; HIV; endotoxin; gut; human; shock; allergy.;

   Sammanfattning : Nitric oxide (NO) is an endogenously formed free radical gas involved in numerous biological processes. In 1991 NO was discovered to be present in exhaled air of humans. Soon after, it was reported that the largest amounts of NO were found in the upper airways, and that the levels of NO were increased in the lower airways of patients with asthma. LÄS MER