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- Wennergren, Göran, 1947, et al.
(författare)
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The importance of differentiation among small for gestational age infants
- 1995
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Ingår i: Impact of antenatal and postnatal environmental factors on infant outcome. Editor Paul Johnson.. - Oxford, UK : Maternal Infant Health Care Research Centre, Nuffield Department of Obstetrics and Gynaecology, John Radcliffe Hospital.
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Konferensbidrag (refereegranskat)
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| 3. |
- Kristjánsson, Sigurdur, 1955, et al.
(författare)
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Leukotriene B4 and C4 generation by human leukocytes after ex vivo stimulation with Ca-ionophore and opsonized zymosan in children with atopic asthma.
- 1995
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Ingår i: Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology. - 0905-6157. ; 6:3, s. 155-60
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Tidskriftsartikel (refereegranskat)abstract
- The ex vivo release of leukotriene B4 (LTB4) and leukotriene C4 (LTC4) from leukocytes was evaluated after stimulation with both Ca-ionophore (Ca-I) and opsonized zymosan (OZ) in children with atopic asthma. Twenty-seven patients with asthma of varying severity were evaluated and divided into three groups: 1) moderate to severe asthma using inhaled steroids and symptom-free for the last 3 weeks (n = 8), 2) mild asthma with sporadic symptoms, only using inhaled beta 2-agonists < 3 times/week (n = 8), and 3) acute asthmatic attacks admitted to hospital (n = 11). A group of children without atopic disease or any other known disease served as controls (n = 15). Total serum IgE levels were significantly increased in the children with asthma compared with the control group. LTC4 production was only significantly increased in the group of children with moderate to severe asthma after stimulation with Ca-I, when compared with controls. In the same group, a trend towards increased LTC4 production after stimulation with OZ was found. LTB4 was not significantly increased in any patient group compared with the control group. A significant correlation between LTC4 production after stimulation with Ca-I, but not OZ, and the relative blood eosinophil count was found in all subjects. LTC4 generation per eosinophilic cell after stimulation with Ca-I or OZ was not statistically different in any patient group compared with the controls. We conclude that the increased leukotriene (LT) levels found after the stimulation of peripheral white blood cells sampled from atopic children with asthma are mainly the result of increased numbers of LT-producing cells, rather than due to increased releasability from these cells.
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