Sökning: "antioxidant"

Visar resultat 21 - 25 av 301 avhandlingar innehållade ordet antioxidant.

1. 21. Respiratory effects of particulate matter air pollution : studies on diesel exhaust, road tunnel, subway and wood smoke exposure in human subjects

   Författare :Maria Sehlstedt; Sandström Thomas; Jamshid Pourazar; Anders Bucht; Steffen Loft; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Airway inflammation; antioxidant; bronchoscopy; detoxification; immunohistochemistry; particulate matter; Environmental medicine; Miljömedicin;

   Sammanfattning : Background: Ambient air pollution is associated with adverse health effects, but the sources and components, which cause these effects is still incompletely understood. The aim of this thesis was to investigate the pulmonary effects of a variety of common air pollutants, including diesel exhaust, biomass smoke, and road tunnel and subway station environments. LÄS MER

3. 22. Helicobacter pylori infection in a mouse model: Development, optimization and inhibitory effects of antioxidants

   Författare :Xin Wang; Avdelningen för medicinsk mikrobiologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; virology; bacteriology; Microbiology; mice; Helicobacter pylori; gastritis; lymphoma; antioxidant; diet; Th1 and Th2; cytokines; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

   Sammanfattning : Helicobacter pylori is a human pathogen strongly associated with chronic type B gastritis, peptic ulcer disease, gastric cancer and MALT lymphoma. Our aims were to establish a mouse model of H. pylori infection, to study pathogenesis of gastritis and gastric cancer and to investigate new treatment strategies in this model. LÄS MER

4. 23. Vitamin B6 as a potential antioxidant : a study emanating from UV-B-stressed plants

   Författare :Mikael Ristilä; Åke Strid; Leif Eriksson; Éva Hideg; Örebro universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Arabidopsis; UV-B irradiation; pyridoxine; vitamin B6; ROS; Chemistry; Kemi; Chemistry; Kemi;

   Sammanfattning : Increased influx of solar UV-B radiation (280-320 nm), due to a decreasing stratospheric ozone layer, impacts severely on plants. Some of the UV-B effects on plants are related to stress induced by produced reactive oxygen species (ROS). Pyridoxine (vitamin B6) has been reported to be a potential quencher of ROS. LÄS MER

5. 24. Selenium Compounds and Antioxidant Capacity in Bovine Milk. Studies on Glutathione Peroxidase, Bioavailability and Electrochemical Techniques

   Författare :Jun Chen; Kemiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; General biomedical sciences; Biomedicinska vetenskaper allmänt ; Kemiteknik och kemisk teknologi; Chemical technology and engineering; Livsmedelsteknik; Food and drink technology; amperometry; voltammetry; antioxidant capacity; ileostomy; bioavailability; glutathione peroxidase; bovine milk; selenium;

   Sammanfattning : The efficacy and function of antioxidants have been intensively studied in foods and other biological systems in recent decades. This thesis concerns different aspects of the antioxidant properties of bovine milk, with emphasis on measurement of the total antioxidant capacity (TAC), the activity of the selenium-containing glutathione peroxidase (GSHPx), and the bioavailability of selenium from bovine milk in humans. LÄS MER

7. 25. Antioxidants in Bolivian Plant Foods. Antioxidant Capacity, Flavonoids and other Phenolic Compounds

   Författare :Mauricio Penarrieta; Livsmedelsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bolivia; Foods; Flavonoids; Phenolic Compounds; Total Antioxidant Capacity; HPLC.;

   Sammanfattning : The total antioxidant capacity was measured and the major phenolic and flavonoid compounds were identified and quantified in a selection of Bolivian crops growing at different altitudes above seal level (a.s.l.). LÄS MER