| 1. |
- Gyllenberg, A, et al.
(författare)
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Variability in the CIITA gene interacts with HLA in multiple sclerosis.
- 2014
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Ingår i: Genes and immunity. - Stockholm : Springer Science and Business Media LLC. - 1476-5470 .- 1466-4879. ; 15, s. 162-167
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Tidskriftsartikel (refereegranskat)abstract
- The human leukocyte antigen (HLA) is the main genetic determinant of multiple sclerosis (MS) risk. Within the HLA, the class II HLA-DRB1*15:01 allele exerts a disease-promoting effect, whereas the class I HLA-A*02 allele is protective. The CIITA gene is crucial for expression of class II HLA molecules and has previously been found to associate with several autoimmune diseases, including MS and type 1 diabetes. We here performed association analyses with CIITA in 2000 MS cases and up to 6900 controls as well as interaction analysis with HLA. We find that the previously investigated single-nucleotide polymorphism rs4774 is associated with MS risk in cases carrying the HLA-DRB1*15 allele (P=0.01, odds ratio (OR): 1.21, 95% confidence interval (CI): 1.04-1.40) or the HLA-A*02 allele (P=0.01, OR: 1.33, 95% CI: 1.07-1.64) and that these associations are independent of the adjacent confirmed MS susceptibility gene CLEC16A. We also confirm interaction between rs4774 and HLA-DRB1*15:01 such that individuals carrying the risk allele for rs4774 and HLA-DRB1*15:01 have a higher than expected risk for MS. In conclusion, our findings support previous data that variability in the CIITA gene affects MS risk, but also that the effect is modulated by MS-associated HLA haplotypes. These findings further underscore the biological importance of HLA for MS risk.Genes and Immunity advance online publication, 16 January 2014; doi:10.1038/gene.2013.71.
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| 2. |
- Spets, J. -P., et al.
(författare)
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Production of glucose by starch and cellulose acid hydrolysis and its use as a fuel in low-temperature direct-mode fuel cells
- 2010
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Ingår i: THERMEC 2009, PTS 1-4. - Berlin. ; , s. 1164-1169
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The use of glucose, which is produced from the acid hydrolysis of starch and cellulose, is studied as a fuel in a low-temperature direct-mode fuel cell (LTDMFC) with an alkaline electrolyte. Glucose is regarded as being as good a fuel as bioethanol, because both the fuels give 2 electrons per molecule in the fuel cell without carbonisation problems. However, glucose can be produced with fewer processing stages from starch and cellulose than can bioethanol. In the LTDMFC the fuel and the electrolyte are mixed with each other and the fuel cell is equipped only with metal catalysts. Cellulose as a fuel is of great importance because the fuel for the energy production is not taken from food production. A description of an acid hydrolysis method for starch and cellulose is presented. Values for glucose concentrations in each hydrolysate are analysed by means of a chromatographic method. Each glucose hydrolysate was made alkaline by adding of potassium hydroxide before feed in the fuel cell. Polarisation curves were measured, and they were found to produce lower current density values when compared to earlier tests with pure glucose. The Coulombic efficiency of pure glucose electrochemical oxidation in LTDMFC, which was calculated from a ratio of detected current capacity (As) to the maximum current capacity with the release of two electrons per molecule, was also found to be very low. Concerning the hydrolysates, the glucose concentrations were found to have values that were too low when compared to the earlier tests with pure glucose in a concentration of 1 M. The further development demands for the system under consideration are indicated. The concentration of glucose in the hydrolysate is essential to achieve high enough current density values in the LTDMFC.
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| 3. |
- Spets, J. -P, et al.
(författare)
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The Simultaneous Uses of the Direct-Mode Bioorganic Fuel Cell and the Function Generator for the Enhancement of the Glucose Electro-chemical Oxidation
- 2010
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Ingår i: International Journal of Electrochemical Science. - 1452-3981. ; 5:4, s. 547-555
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Tidskriftsartikel (refereegranskat)abstract
- In this study a test of the direct-mode bioorganic fuel cell (DMBFC) in which the fuel and the alkaline electrolyte are mixed with each other at two temperatures of 20 and 35 degrees C are carried out. The direct-mode bioorganic fuel cell is exposed to an externally generated electromagnetic field with simultaneous discharging in order to split the fuel molecule before the electrochemical oxidation at the two operation temperatures. The current-voltage characteristics are measured and analyzed. The liquid phase of the fuel-electrolyte concentration of the glucose was analysed both before and after the electrochemical tests at the operation temperature 20 degrees C. The aim is to continue with the development of the direct-mode glucose fuel cell by increasing the power density range by several mWcm(-2). This type of the fuel cell with glucose as a fuel has increased to the specific capacity levels of 120.8 and 132.7 Ah / kg glucose at the temperatures of 20 degrees C and 35 degrees C, respectively.
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| 4. |
- Sun, Chengjun, et al.
(författare)
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CRYAB-650 C>G (rs2234702) affects susceptibility to type 1 diabetes and IAA-positivity in Swedish population
- 2012
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Ingår i: Human Immunology. - : Elsevier. - 0198-8859 .- 1879-1166. ; 73:7, s. 759-766
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Single nucleotide polymorphisms (SNPs) in the promoter region of CRYAB gene have been associated with in multiple sclerosis. CRYAB gene, which encodes alpha B-crystallin (a member of small heat shock protein), was reported as a potential autoimmune target. In this study we investigated whether SNPs in the promoter region of CRYAB gene were also important in the etiology of Type 1 diabetes (T1D).METHODS: Genotyping of SNPs in the promoter region of CRYAB gene was performed in a Swedish cohort containing 444 T1D patients and 350 healthy controls. Three SNPs were included in this study: CRYAB-652 A>G (rs762550), -650 C>G (rs2234702) and -249 C > G (rs14133). Two SNPs (CRYAB-652 and -650) were not included in previous genome wide association studies.RESULTS: CRYAB-650 (rs2234702)*C allele was significantly more frequent in patients than in controls (OR = 1.48, Pc = 0.03). CRYAB-650*C allele was associated with IAA positivity (OR = 8.17, Pc < 0.0001) and IA-2A positivity (OR = 2.14, Pc = 0.005) in T1D patients. This association with IAA was amplified by high-risk HLA carrier state (OR = 10.6, P < 0.0001). No association was found between CRYAB-650 and other autoantibody positivity (GADA and ICA). CRYAB haplotypes were also associated with IAA and IA-2A positivity (highest OR = 2.07 and 2.11, respectively), these associations remain in high HLA-risk T1D patients.CONCLUSIONS: CRYAB-650 was associated with T1D in the Swedish cohort we studied. CRYAB-650*C allele might confers susceptibility to the development of T1D. CRYAB-650 was also associated with the development of IAA-positivity in T1D patients, especially in those carrying T1D high-risk HLA haplotypes.
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| 5. |
- Ekman, M., et al.
(författare)
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PMH30 The Societal Cost of Depression: Evidence from 10,000 Swedish Patients in Psychiatric Care
- 2012
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Ingår i: Value in Health. - 1098-3015. ; 15:4
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Konferensbidrag (refereegranskat)abstract
- Objectives Depression is a major health problem. Previous studies on the cost of depression have mainly taken a primary care perspective. Such studies do not include all patients with depression, and should be completed by cost estimates from psychiatric care. The objectives of this study were to estimate the annual societal cost of depression per patient in psychiatric care in Sweden, and to relate costs to disease severity, depressive episodes, hospitalization, and patient functioning. Methods Retrospective resource use data in inpatient and outpatient care for 2006-2008, as well as ICD-10 diagnoses and Global Assessment of Functioning (GAF), were obtained from Northern Stockholm psychiatric clinic with a catchment area including 47% of the adult inhabitants in Stockholm city. This data set was combined with national register data on prescription pharmaceuticals and sick leave to estimate the societal cost of depression. Results The study included 10,593 patients (63% women). The average annual societal cost per patient was around USD 21,000 in 2006-2008. The largest cost item was indirect costs due to productivity losses (89%), and the second largest was outpatient care (6%). Patients with mild, moderate or severe depression had an average cost of approximately USD 18,000, USD 21,000, and USD 29,000, respectively. Total costs were significantly higher during depressive episodes, for patients with co-morbid psychosis or anxiety, for hospitalized patients, and for patients with low GAF scores. Conclusions The largest share of societal costs for patients with depression in psychiatric care is indirect. The total costs were higher than previously reported from a primary care setting, and strongly related to hospitalization, episodes of active depression, and global functioning. This suggests that effective treatment and rehabilitation that avoid depressive episodes and hospitalization may not only improve patient health, but also reduce the societal cost of depression.
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| 6. |
- Gunnarsson, H, et al.
(författare)
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Heterogeneity of colon cancer patients reported as emergencies
- 2014
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Ingår i: World Journal of Surgery. - : Springer Science and Business Media LLC. - 0364-2313 .- 1432-2323. ; 38:7, s. 1819-1826
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND:Up to one-fourth of all colon cancer patients are reported as emergencies, and the aim of the present study was to scrutinize mode of presentation in this group.MATERIALS AND METHODS:All reported cases of emergency (n = 263) and randomly selected elective controls (1:2) of colon cancer in four Swedish counties 2006-2008 were eligible (n = 854). Symptoms and aspects of management were retrieved from surgery and primary care records. Outcomes were compared using Kaplan-Meier estimates and Cox regression.RESULTS:Among patients reported as emergencies, 158/263 (60 %) underwent operation within three days (acute), and 105 (40 %) after more than 3 days (subacute). In the latter group, 20/94 (21 %) had reported two symptoms, and 31/94 (33 %) had reported three or more symptoms associated with colon cancer to primary care during the last 12 months prior to surgery. In total, 46/105 (44 %) had already had an examination of the large bowel, and 52/105 (50 %) were stage IV, as opposed to 36/158 (23 %) in the acute group and 83/577 (15 %) in the elective group (p < 0.001). Mortality at 30 and 90 days was 15.2 and 35.6 % in the subacute group, 8.2 and 14.9 % in the acute group (p = 0.001), and 1.9 and 4.3 % in the elective group (p < 0.001); 5-year survival was 28.3, 40.1, and 57.8 %, respectively, in the three groups (p < 0.001). The hazard ratio, adjusted for age, sex, and stage, was 1.88 95 % confidence interval (CI) 1.5-2.4) for the acute group and 2.29 (95 % CI 1.7-3.1) for the subacute group.CONCLUSIONS:Colon cancer patients reported as emergencies but operated upon more than three days after admission had the worst outcome. Efforts to decrease the interval between admission and surgery is one important aspect of care, but wider attention must also be paid to this group of patients.
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| 7. |
- Hemminki, Kari, et al.
(författare)
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Familial risks in nervous system tumours: joint Nordic study.
- 2010
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Ingår i: British Journal of Cancer. - : Springer Science and Business Media LLC. - 1532-1827 .- 0007-0920. ; 102, s. 1786-1790
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Tidskriftsartikel (refereegranskat)abstract
- Background:Familial nervous system cancers are rare and limited data on familial aspects are available particularly on site-specific tumours.Methods:Data from five Nordic countries were used to analyse familial risks of nervous system tumours. Standardised incidence ratios (SIRs) were calculated for offspring of affected relatives compared with offspring of non-affected relatives.Results:The total number of patients with nervous system tumour was 63 307, of whom 32 347 belonged to the offspring generation. Of 851 familial patients (2.6%) in the offspring generation, 42 (4.7%) belonged to the families of a parent and at least two siblings affected. The SIR of brain tumours was 1.7 in offspring of affected parents; it was 2.0 in siblings and 9.4 in families with a parent and sibling affected. For spinal tumours, the SIRs were much higher for offspring of early onset tumours, 14.0 for offspring of affected parents and 22.7 for siblings. The SIRs for peripheral nerve tumours were 16.3 in offspring of affected parents, 27.7 in siblings and 943.9 in multiplex families.Conclusion:The results of this population-based study on medically diagnosed tumours show site-, proband- and age-specific risks for familial tumours, with implications for clinical genetic counselling and identification of the underlying genes.British Journal of Cancer advance online publication, 25 May 2010; doi:10.1038/sj.bjc.6605708 www.bjcancer.com.
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