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- Günther, Göran, et al.
(author)
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Ticke-borne encephalitis is associated with low levels of interleukin-10 in cerebrospinal fluid
- 2011
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In: Infection Ecology & Epidemiology. - : Informa UK Limited. - 2000-8686. ; 1, s. 6029-
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Journal article (peer-reviewed)abstract
- Tick-borne encephalitis (TBE) is associated with higher morbidity and induces a stronger intrathecal immune activation than most other viral induced meningo-encephalitis. The aim of this study was to investigate cytokine concentrations in cerebrospinal fluid (CSF) and serum in relation to aetiology and clinical course. Cytokines were analysed by Enzyme-linked Immuno Assay (ELISA) from 44 patients with TBE and from 36 patients with aseptic meningo-encephalitis of other aetiology (non-TBE). Significantly increased CSF levels of Interferon-γ (IFN-γ), Interleukin-10 (IL-10), Interleukin-6 (IL-6), Interleukin-1 receptor antagonist (IL- 1ra), and soluble CD8 receptor (sCD8) were detected in both cohorts. Tumour necrosis factor-α (TNF-α showed low levels or was not detected in CSF in any group in the acute stage. However, the CSF levels of IL- 10 were significantly lower in TBE than in non-TBE cases 06 days after onset of encephalitis. The TBE patients with encephalitis had significantly lower IL-10 CSF levels later in the clinical course (day 718) than TBE patients with meningeal disease. Increased IFN-γ production, but low IL-10 secretion, may be of pathophysiological significance in TBE.
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- Jacobsen, Marianne, 1980-
(author)
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Real Time Drag Minimization
- 2006
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Licentiate thesis (other academic/artistic)abstract
- This thesis focuses on the use of multiple redundant control surfaces to increase performance during flight. There is no clear-cut definition of performance. It may differ between applications, but here, the amount of drag for a given flight condition is used. The work is concentrated on minimizing drag with the use of measurements instead of numerical simulations. Measured data contains noise and there are problems with repeatability and hysteresis. These difficulties are considered and a method for drag minimization during flight is presented. In the first study the drag minimization algorithm is discussed. Focus is put on describing the implemented method and the treatment of constraints to the optimization problem. The constraints include keeping the lift constant as well as having bounds on the control surface deflections. In the second work, a more complex wind tunnel model is used to validate the drag optimization algorithm. Drag reduction for different flight conditions is studied, as well as the impact of the number of control surfaces. Different layouts of the control surfaces are also tested. The results show that the constraints are satisfied and that the drag is reduced substantially.
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- Sköldenberg, Birgit, et al.
(author)
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Incidence and pathogenesis of clinical relapse after herpes simplex encephalitis in adults.
- 2006
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In: Journal of neurology. - : Springer Science and Business Media LLC. - 0340-5354 .- 1432-1459. ; 253:2, s. 163-70
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Journal article (peer-reviewed)abstract
- OBJECTIVES: To study the occurrence of relapse of herpes simplex encephalitis (HSE) and to find out whether soluble activity markers in cerebrospinal fluid (CSF) indicate direct viral or immune- mediated events. METHODS: A consecutive series of 32 adult survivors of HSE were followed to determine the incidence of clinical relapse of HSE. Four patients had neurological deterioration interpreted as relapsing HSE. Four non-relapsing HSE cases were selected as matched controls. Fifty nine batched, paired CSF and serum samples from the eight HSE patients were analysed for soluble activity markers, predominantly cytokines and mediators (interferon-gamma, soluble CD8, tumour necrosis factor-alpha, and interleukin-10), amount of HSV-DNA and markers of glial and neuronal destruction (neurofilament protein, glial fibrillary acidic protein, S-100-beta, and neuron specific enolase). RESULTS: Relapse of HSE was diagnosed in 3 of 26 (12 %) acyclovir-treated patients (5 episodes during 6.1 years of followup) and in 1 of 6 vidarabine-recipients. All relapses occurred from 1 to 4 months after acute HSE, except for a second relapse after 3.3 years in one patient. Computer tomography at relapses revealed few abnormalities apart from those found during the primary disease. Intravenous acyclovir and corticosteroids were given for 7-21 days in all the relapse patients. All relapse patients seemed to recover to the pre-relapse condition. HSV-DNA was demonstrated in CSF in all patients during the acute stage but not in any of 13 CSF samples taken during relapse phases. The HSV viral load during the acute stage of HSE was not higher or of longer duration in the relapsing patients than in the non-relapsing HSE controls. The levels of sCD8 were increased in nearly all CSF samples tested with peaks of sCD8 at one month of acute HSE. In all episodes of relapse, sCD8 peaks were detected during the first week at high levels. CSF levels of neuron-specific enolase, S-100 and glial fibrillary acidic protein were markedly lower at relapse than at the acute stage of HSV-1 encephalitis. CONCLUSION: The lack of demonstrable HSV DNA in CSF, the lack of acute CSF signs and the lack of signs of neural and glia cells destruction indicate that a direct viral cytotoxicity is not the major pathogenic mechanism in relapse. Instead, the pronounced CSF proinflammatory immunological response and the relative lack of CSF anti-inflammatory cytokine IL-10 response suggest immunologically-mediated pathogenicity.
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- Townsend, Claire L., et al.
(author)
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Long-term Outcomes of Congenital Cytomegalovirus Infection in Sweden and the United Kingdom
- 2013
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In: Clinical Infectious Diseases. - : Oxford University Press (OUP). - 1537-6591 .- 1058-4838. ; 56:9, s. 1232-1239
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Journal article (peer-reviewed)abstract
- Background. Congenital cytomegalovirus (CMV) is an important cause of neurological problems, particularly sensorineural hearing loss, but data on long-term sequelae and the impact of nonprimary maternal infection are limited. We report updated findings on childhood outcomes from 2 large prospective studies. Methods. Pregnant women in Malmo, Sweden, and London, United Kingdom, were included between 1977 and 1986, and newborns were screened for CMV (virus culture of urine or saliva). Cases and matched controls underwent regular, detailed developmental assessments up to at least age 5 years. Results. One hundred seventy-six congenitally infected infants were identified among >50 000 screened (Malmo: 76 [4.6/1000 births]; London: 100 [3.2/1000 births]); 214 controls were selected. Symptoms were recorded in 11% of CMV-infected neonates (19/176) and were mostly mild; only 1 neonate had neurological symptoms. At follow-up, 7% of infants (11/154) were classified as having mild, 5% (7/154) moderate, and 6% (9/154) severe neurological sequelae. Four of 161 controls (2%) had mild impairment. Among children symptomatic at birth, 42% (8/19) had sequelae, versus 14% (19/135) of the asymptomatic infants (P =.006). All moderate/severe outcomes were identified by age 1; mild sequelae were first identified at age 2-5 years in 6 children, and age 6-7 years in 3. Among the 16 children with moderate/severe outcomes, 2 had mothers with confirmed and 7 with presumed nonprimary infection. Conclusions. Moderate or severe outcomes were reported in 11% of children with congenital CMV identified through population screening, all by 1 year; all impairment detected after this age was mild. Nonprimary infections contributed substantially to the burden of childhood congenital CMV disease.
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- Winqvist, Marianne, et al.
(author)
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Stöd till anhöriga : erfarenheter från åtta kommuner 2010-2012
- 2012
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Reports (other academic/artistic)abstract
- Ett omfattande arbete har utförts i landets kommuner sedan slutet av 1990-talet för att utveckla stödet till anhöriga. Staten har bidragit med cirka enmiljard kronor i stimulansmedel och en förändring har införts i Socialtjänstlagen som innebär att kommunerna har en skyldighet att erbjuda anhöriga stöd.I denna undersökning kartläggs och följs stödet till anhöriga under tre år i åtta kommuner. De studerade kommunerna är Borås, Härjedalen, Hässleholm, Malmö, Skara, Strängnäs, Uppsala och Västervik. I rapporten presenteras resultatet av kartläggningen för år 2010. Syftet med studien är att:Kartlägga innehållet i stödet till anhöriga, hur stödet organiseras, planeras,följs upp och utvärderas inom äldre-, funktionshinder- och individ-och familjeområdet samt samverkan mellan kommun, landsting,ideella organisationer och andra aktörer inom området.Undersöka hur de olika huvudintressenterna bedömer kvaliteten påstödet till anhöriga.Under tre år följa utvecklingen i de kommuner/kommundelar som ingår i studien.
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