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- Breimer, Michael, 1951, et al.
(författare)
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Structures of the eight- to nine-sugar glycolipids of human blood group A erythrocytes.
- 1988
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Ingår i: Carbohydrate research. - 0008-6215. ; 178, s. 111-20
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Tidskriftsartikel (refereegranskat)abstract
- Two glycolipid fractions, isolated in 1975 from blood group A1 erythrocytes and shown on the basis of direct-inlet mass spectrometry to contain eight- and nine-sugar A-type sequences, have been reinvestigated by fast-atom-bombardment mass spectrometry and overlay analysis with selected monoclonal anti-A antibodies. The presence of three separate glycolipids was concluded, consistent with a common paragloboside backbone [beta-D-Galp-(1----4)-beta-D-GlcpNAc-(1----3)-beta-D-Galp-(1----4)-D-Glc] and a typical erythrocyte ceramide component (sphingosine, and 22-, 23-, 24-, and 25-carbon nonhydroxy fatty acids). It is proposed that they carry A determinants based on Type 1 [beta-D-Galp-(1----3)-beta-D-GlcpNAc], Type 2 [beta-D-Galp-(1----4)-beta-D-GlcpNAc], and Type 3 [beta-D-Galp-(1----3)-alpha-D-GalpNAc] chains, respectively. The Type 1 (eight sugars) and Type 3 (nine sugars) glycolipids appeared in mixtures of both the native and the acetylated form. The existence of Type 1 glycolipid, which appears to be a genuine erythrocyte glycolipid as concluded from the ceramide composition, had been predicted earlier by other workers.
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- Andersson-Engels, S., et al.
(författare)
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Tissue diagnostics using laser-induced fluorescence
- 1989
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Ingår i: Berichte der Bunsengesellschaft für Physikalische Chemie. - : Wiley. - 0005-9021. ; 93:3, s. 335-342
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Tidskriftsartikel (refereegranskat)abstract
- We have performed extensive investigations of laser-induced fluorescence in animal and human tissue aimed at instant tissue characterization. Autofluorescence, as well as specific fluorescence from HPD/DHE and other photosensitizers, has been utilized. The studies have been focused on the demarcation of malignant tumours and atheroscleortic plaques. A nitrogen laser or an excimer-pumped dye laser was used to induce fluorescence, which was analysed with an intensified optical multichannel system. A fibre-optic sensor system was developed for the clinical work. Multi-colour fluorescence imaging has also been demonstrated along a line and equipment for two-dimensional imaging is being constructed. Dimensionless spectroscopic functions, which are not affected by factors that are clinically uncontrollable have been employed for optimum tissue discrimination. The investigations have so far been performed in a time-integrated mode, but time-resolved studies are now being initiated to fully exploit the diagnostic power of tissue laser-induced fluorescence. In addition to a presentation of our own work a brief review of tissue fluorescence studies performed by other groups is also given.
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- Bergqvist, D, et al.
(författare)
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Abdominal injury from sporting activities
- 1982
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Ingår i: British journal of sports medicine. - : BMJ. - 1473-0480 .- 0306-3674. ; 16:2, s. 76-79
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Tidskriftsartikel (refereegranskat)abstract
- The frequency of abdominal injury is rising. In an analysis of 1,354 cases of closed abdominal trauma sustained during a 30-year period (1950-1979) in Skaraborg County, Sweden, a distinct increase was found in the numbers associated with sporting activities. The severity of the injuries caused by sports likewise showed an increase. The representation of injured organs was of the same order as in the total series of closed abdominal injuries. An analysis of the 136 cases of sports-associated injury is presented with regard to cause and type of the injuries, diagnosis and prognosis.
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- Bergqvist, D, et al.
(författare)
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Abdominal trauma in persons older than 60 years
- 1982
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Ingår i: Acta Chirurgica Scandinavica. - 0001-5482. ; 148:7, s. 569-573
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Tidskriftsartikel (refereegranskat)abstract
- Abdominal trauma occurring in persons older than 60 years over a 30-year period (1950-79) in a well defined region of Sweden was reviewed. The 177 patients comprised 12.5% of the total with abdominal trauma during that period. Road traffic accidents were the main cause of trauma (48% of cases). The incidence of motor-car accidents rose sharply during the first two decades of the study. Injuries to the liver and bile ducts and multiple intra-abdominal injuries were more common in the elderly than in younger patients, but injury to the abdominal wall was less common. A tendency towards more severe injuries and multiple trauma with extra-abdominal involvement emerged during the study period. The mortality rate was 27.6% in the patients older than 60, but 9.1% in the overall patient series with abdominal trauma. One-third of all the deaths among the older patients were directly due to the abdominal trauma. One consequence of the increasing numbers of old people in the general population is probably that more and more cases of abdominal trauma will be seen in the higher age groups.
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