| 41. |
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| 42. |
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| 43. |
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| 44. |
- Niessen, Peter, et al.
(author)
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Recent results from the amanda experiment
- 2003
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In: Proceedings of 38th Rencontres de Moriond on Electroweak Interactions and Unified Theories 15-22 Mar 2003. Les Arcs, France.
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Conference paper (peer-reviewed)abstract
- AMANDA (Antarctic Muon And Neutrino Detector Array) is a neutrino telescope built under the southern polar icecap and its scope is to explore the possibility to detect high energy cosmic neutrinos. This should generate insight into the powerful celestial objects where acceleration mechanisms can bring up to 10 20 eV. We describe the achievements and results from the AMANDA-B10 prototype and the preliminary results from the current AMANDA-II detector which show dramatic increase in sensitivity.
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| 45. |
- Nygren, Jonas, et al.
(author)
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Glucose flux is normalized by compensatory hyperinsulinaemia in growth hormone-induced insulin resistance in healthy subjects, while skeletal muscle protein synthesis remains unchanged.
- 2002
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In: Clinical Science. - London, United Kingdom : Portland Press. - 0143-5221 .- 1470-8736. ; 102:4, s. 457-64
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Journal article (peer-reviewed)abstract
- The aim of this present investigation was to study the relationship between the reduction in insulin sensitivity accompanying 5 days of treatment with growth hormone (GH; 0.05 mg.24 h(-1).kg(-1)) and intracellular substrate oxidation rates in six healthy subjects, while maintaining glucose flux by a constant glucose infusion and adjusting insulin infusion rates to achieve normoglycaemia (feedback clamp). Protein synthesis rates in skeletal muscle (flooding dose of L-[(2)H(5)]phenylalanine) were determined under these conditions. We also compared changes in insulin sensitivity after GH treatment with simultaneous changes in energy requirements, protein synthesis rates, nitrogen balance, 3-methylhistidine excretion in urine, body composition and the hormonal milieu. After GH treatment, 70% more insulin was required to maintain normoglycaemia (P<0.01). The ratio between glucose infusion rate and serum insulin levels decreased by 34% at the two levels of glucose infusion tested (P<0.05). Basal levels of C-peptide, insulin-like growth factor (IGF)-I and IGF-binding protein-3 increased almost 2-fold, while levels of glucose, insulin, glucagon, GH and IGF-binding protein-1 remained unchanged. Non-esterified fatty acid levels decreased (P<0.05). In addition, 24 h urinary nitrogen excretion decreased by 26% (P<0.01) after GH treatment, while skeletal muscle protein synthesis and 3-methylhistidine excretion in urine remained unchanged. Energy expenditure increased by 5% (P<0.05) after treatment, whereas fat and carbohydrate oxidation were unaltered. In conclusion, when glucose flux was normalized by compensatory hyperinsulinaemia under conditions of GH-induced insulin resistance, intracellular rates of oxidation of glucose and fat remained unchanged. The nitrogen retention accompanying GH treatment seems to be due largely to improved nitrogen balance in non-muscle tissue.
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| 46. |
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| 47. |
- Nygren, Peter, et al.
(author)
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Economic aspects of chemotherapy
- 2001
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In: Acta oncologica. - : Taylor & Francis. - 1651-226X .- 0284-186X. ; 40, s. 412-
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Journal article (other academic/artistic)abstract
- A systematic review of the effect of chemotherapy in several tumour types was performed by The Swedish Council of Technology Assessment in Health Care (SBU). The review also included an assessment of the limited number of studies available on the health economics of chemotherapy for diagnoses included in the SBU report. The conclusions reached from this assessment can be summarized as follows: • Several international studies and one Swedish study addressed the cost-effectiveness of different chemotherapeutic regimens. The quality of the studies is generally low and comparability is rather limited. Some of the studies compared cytostatic treatment with no cytostatic treatment. Most studies, however, compared two or more treatments. The costs were then compared with potential differences in treatment outcome. Outcomes are mostly measured as the cost per life-year gained. • The results from these studies vary by treatment and indication. In some cases, after all relevant costs are taken into account, chemotherapy shows cost savings. In most studies, chemotherapy is associated both with higher costs and improved treatment results, often measured in terms of survival. • Studies of rather high quality show that the cost per life-year gained (quality-adjusted) for most chemotherapeutic regimens with relatively limited effects ranges between 100000 and 250000 Swedish kronor (SEK). Estimates of cost-effectiveness for more effective chemotherapy has not been reported in the literature. The estimated costs are in parity with the costs of 'established' treatments for other diseases. • There is uncertainty about what treatments can be considered cost-effective; there is no consensus concerning what costs are 'reasonable' per life-year gained in health care. • The estimates of cost-effectiveness in most studies are highly uncertain and must be interpreted with caution. Improved assessment would require more studies in Sweden. For various reasons it is difficult to apply the results from the international studies to Sweden.
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| 49. |
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| 50. |
- Palm, Fredrik, et al.
(author)
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Effects of the contrast medium iopromide on renal hemodynamics and oxygen tension in the diabetic rat kidney
- 2003
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In: Advances in Experimental Medicine and Biology. - 0065-2598 .- 2214-8019. ; 530, s. 653-659
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Journal article (peer-reviewed)abstract
- We investigated the effects of the contrast medium (CM) iopromide on regional renal blood flow and oxygen tension (pO2) in the streptozotocin (STZ)-induced diabetic Wistar Furth rats. RESULTS: In normoglycemic rats, CM injection induced a transient decrease followed by an increase in renal cortical blood flow (CBF), whereas CBF increased directly in the diabetic animals. Renal outer medullary blood flow (OMBF) increased in controls, while it decreased in the diabetic animals following CM injection. In control rats a marked initial decrease in OM pO2 following injection of CM was observed. In animals diabetic for 4 weeks only a slight decrease was seen, whereas in 9-week diabetic animals a persistent increase was recorded. CONCLUSIONS: An altered oxygen tension and hemodynamic response to CM was found in diabetic rats. If these disturbances may contribute to the development of renal dysfunction by CM in the diabetic rat kidney remains to be elucidated.
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