| 1. |
- Rich, Rebecca L., et al.
(författare)
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A global benchmark study using affinity-based biosensors
- 2009
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Ingår i: Analytical Biochemistry. - : Elsevier BV. - 0003-2697 .- 1096-0309. ; 386:2, s. 194-216
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Tidskriftsartikel (refereegranskat)abstract
- To explore the variability in biosensor studies, 150 participants from 20 countries were given the same protein samples and asked to determine kinetic rate constants for the interaction. We chose a protein system that was amenable to analysis using different biosensor platforms as well as by users of different expertise levels. The two proteins (a 50-kDa Fab and a 60-kDa glutathione S-transferase [GST] antigen) form a relatively high-affinity complex, so participants needed to optimize several experimental parameters, including ligand immobilization and regeneration conditions as well as analyte concentrations and injection/dissociation times. Although most participants collected binding responses that could be fit to yield kinetic parameters, the quality of a few data sets could have been improved by optimizing the assay design. Once these outliers were removed, the average reported affinity across the remaining panel of participants was 620 pM with a standard deviation of 980 pM. These results demonstrate that when this biosensor assay was designed and executed appropriately, the reported rate constants were consistent, and independent of which protein was immobilized and which biosensor was used.
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| 2. |
- McKeith, IG, et al.
(författare)
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Diagnosis and management of dementia with Lewy bodies - Third report of the DLB consortium
- 2005
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Ingår i: Neurology. - : Ovid Technologies (Wolters Kluwer Health). - 1526-632X .- 0028-3878. ; 65:12, s. 1863-1872
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Forskningsöversikt (refereegranskat)abstract
- The dementia with Lewy bodies (DLB) Consortium has revised criteria for the clinical and pathologic diagnosis of DLB incorporating new information about the core clinical features and suggesting improved methods to assess them. REM sleep behavior disorder, severe neuroleptic sensitivity, and reduced striatal dopamine transporter activity on functional neuroimaging are given greater diagnostic weighting as features suggestive of a DLB diagnosis. The 1-year rule distinguishing between DLB and Parkinson disease with dementia may be difficult to apply in clinical settings and in such cases the term most appropriate to each individual patient should be used. Generic terms such as Lewy body (LB) disease are often helpful. The authors propose a new scheme for the pathologic assessment of LBs and Lewy neurites (LN) using alpha-synuclein immunohistochemistry and semiquantitative grading of lesion density, with the pattern of regional involvement being more important than total LB count. The new criteria take into account both Lewy-related and Alzheimer disease (AD)-type pathology to allocate a probability that these are associated with the clinical DLB syndrome. Finally, the authors suggest patient management guidelines including the need for accurate diagnosis, a target symptom approach, and use of appropriate outcome measures. There is limited evidence about specific interventions but available data suggest only a partial response of motor symptoms to levodopa: severe sensitivity to typical and atypical antipsychotics in similar to 50%, and improvements in attention, visual hallucinations, and sleep disorders with cholinesterase inhibitors.
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| 3. |
- Aarsland, D, et al.
(författare)
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Frequency and case identification of dementia with Lewy bodies using the revised consensus criteria
- 2008
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Ingår i: Dementia and geriatric cognitive disorders. - : S. Karger AG. - 1421-9824 .- 1420-8008. ; 26:5, s. 445-452
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Tidskriftsartikel (refereegranskat)abstract
- <i>Objective:</i> To find the proportion of dementia with Lewy bodies (DLB) in a referral cohort of patients with a first-time diagnosis of mild dementia. <i>Background:</i> The proportion of DLB among the dementia sufferers is not known and the clinical consensus criteria have low sensitivity. We employed the revised DLB criteria to study the proportion with DLB in a community sample of patients with mild dementia. <i>Methods:</i> From March 2005 to March 2007, we included 196 patients from referrals to all geriatric medicine, old age psychiatry and neurology outpatient clinics in Rogaland and Hordaland counties in Western Norway. Standardized clinical instruments and diagnostic criteria were employed. <i>Results:</i> 65% had Alzheimer dementia, 20% DLB (16% probable DLB), 5.6% vascular dementia, 5.6% Parkinson disease with dementia, 2.0% frontotemporal dementia and 1.5% alcoholic dementia. There were no significant differences in the proportion with DLB according to age bands and dementia severity groups. The revised criteria for a clinical diagnosis of DLB increased the proportion of probable DLB by 25% compared to the previous criteria. <i>Conclusion:</i> DLB is common in patients with mild dementia, and is the second most common type of dementia. The introduction of new clinical criteria for DLB leads to an increase in the proportion diagnosed with probable DLB.
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| 4. |
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| 5. |
- Burns, A, et al.
(författare)
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The clinical use of memantine.
- 2005
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Ingår i: Research and Practice in Alzheimer's Disease. ; 10, s. 205-20
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Tidskriftsartikel (refereegranskat)
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| 6. |
- Lutz, JM, et al.
(författare)
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Occupational risks for uveal melanoma results from a case-control study in nine European countries
- 2005
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Ingår i: Cancer Causes and Control. - : Springer Science and Business Media LLC. - 1573-7225 .- 0957-5243. ; 16:4, s. 437-447
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Tidskriftsartikel (refereegranskat)abstract
- Objective Uveal melanoma is a rare disease with poor prognosis and largely unknown etiology. We studied potential occupational risk factors. Methods A population based case-control study was undertaken during 1995-1997 in nine European countries using population and colon cancer controls with personal interviews. Occupational exposure to sunlight and artificial UV radiation was assessed with a job exposure matrix. In total, 320 uveal melanoma cases were eligible at pathology review, and 292 cases were interviewed, participation 91%. Out of 3357 population controls, 2062 were interviewed, 61%, and out of 1272 cancer controls 1094 were interviewed, 86%. Results Using population controls, occupational exposure to sunlight was not associated with an increased risk (RR=1.24, 95% CI=0.88-1.74), while an excess risk found with use of colon cancer controls was attributed to confounding factors. An excess risk in welders was restricted to the French part of the data. Cooks, RR=2.40; cleaners, RR 2.15; and laundry workers, RR=3.14, were at increased risk of uveal melanoma. Conclusion Our study does overall not support an association between occupational sunlight exposure and risk of uveal melanoma. The finding of an excess risk of eye melanoma in cooks in several European countries is intriguing.
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| 7. |
- Skogseth, R, et al.
(författare)
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Neuropsychiatric correlates of cerebrospinal fluid biomarkers in Alzheimer's disease
- 2008
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Ingår i: Dementia and geriatric cognitive disorders. - : S. Karger AG. - 1421-9824 .- 1420-8008. ; 25:6, s. 559-563
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Tidskriftsartikel (refereegranskat)abstract
- <i>Background:</i> The aim of this study was to explore the relationship between cerebrospinal fluid biomarkers and neuropsychiatric symptoms in people with Alzheimer’s disease. Psychosis, agitation, apathy and depression were assessed using standardised measures in 32 patients with mild Alzheimer’s disease. <i>Methods:</i> The levels of the 42-amino-acid form of β-amyloid (Aβ<sub>1–42</sub>), tau and p-tau (phosphorylated at threonine 181) were quantified using the conventional enzyme-linked immunosorbent assay method. <i>Results:</i> Our result shows that apathy is significantly correlated with tau and p-tau but not with Aβ<sub>1–42</sub>. There were no significant correlations between indices of psychosis/agitation,or depression and cerebrospinal fluid Aβ<sub>1–42</sub>, tau or p-tau concentrations. <i>Conclusion:</i> Our finding suggests that apathy is associated with the level of neurofibrillary tangles in people with mild Alzheimer’s disease. In contrast, the overall levels of neurofibrillary tangles or amyloid plaques do not seem to be associated with depression or psychosis, indicating that other brain changes contribute to these symptoms.
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| 8. |
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| 9. |
- Sokolovskiy, E, et al.
(författare)
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Guidelines for the laboratory diagnosis of syphilis in East European countries
- 2009
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Ingår i: Journal of the European Academy of Dermatology and Venereology. - : Wiley. - 0926-9959 .- 1468-3083. ; 23:6, s. 623-632
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Tidskriftsartikel (refereegranskat)abstract
- The present guidelines aim to provide comprehensive and precise information regarding the laboratory diagnosis of the sexually transmitted infection (STI) syphilis in East European countries. These recommendations contain important information for laboratory staff working with STIs and/or STI-related issues. Individual East European countries may be required to make minor national adjustments to these guidelines as a result of lack of accessibility to some reagents or equipment, or laws in a specific country. None declared.
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| 10. |
- Sonnesyn, H, et al.
(författare)
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High prevalence of orthostatic hypotension in mild dementia
- 2009
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Ingår i: Dementia and geriatric cognitive disorders. - : S. Karger AG. - 1421-9824 .- 1420-8008. ; 28:4, s. 307-313
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Tidskriftsartikel (refereegranskat)abstract
- <i>Background/Aims:</i> Orthostatic hypotension (OH) and QTc prolongation have potentially important prognostic and therapeutic consequences but have rarely been studied in patients with mild dementia. <i>Methods:</i> Patients with mild dementia were diagnosed according to consensus criteria after comprehensive standardized assessment. OH and QTc were assessed using standardized criteria. <i>Results:</i> OH was significantly more common in the dementia than in the control group, and systolic drop was higher in those with dementia with Lewy bodies. There were no significant differences in QTc values between dementia and control subjects. <i>Conclusion:</i> OH occurs even in patients with mild dementia, in particular in dementia with Lewy bodies. QTc was not prolonged in patients with mild dementia compared with normal controls.
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