Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Blennow Kaj 1958 ) "

Sökning: WFRF:(Blennow Kaj 1958 )

  • Resultat 1-10 av 639
Sortera/gruppera träfflistan
  • Abramsson, Alexandra, 1973-, et al. (författare)
  • Proteomics Profiling of Single Organs from Individual Adult Zebrafish.
  • 2010
  • Ingår i: Zebrafish. - 1557-8542. ; 7:2, s. 161-168
  • Tidskriftsartikel (refereegranskat)abstract
    • Abstract The model organism zebrafish (Danio rerio) is extensively utilized in studies of developmental biology but is also being investigated in the context of a growing list of human age-related diseases. To facilitate such studies, we here present protein expression patterns of adult zebrafish organs, including blood, brain, fin, heart, intestine, liver, and skeletal muscle. Protein extracts were prepared from the different organs of two zebrafish and analyzed using liquid chromatography coupled to high-resolution tandem mass spectrometry. Zebrafish tissue was digested directly after minimal fractionation and cleaned up (the shotgun approach). Proteins were identified using Mascot software. In total, 1394 proteins were identified of which 644 were nonredundant. Of these, 373 demonstrated an organ-specific expression pattern and 57 had not been shown on protein level before. These data emphasize the need for increased research at the protein level to facilitate the selection of candidate proteins for targeted quantification and to refine systematic genetic network analysis in vertebrate development, biology, and disease.
  • Agholme, Lotta, et al. (författare)
  • Low-dose γ-secretase inhibition increases secretion of Aβ peptides and intracellular oligomeric Aβ.
  • 2017
  • Ingår i: Molecular and cellular neurosciences. - 1095-9327. ; 85, s. 211-219
  • Tidskriftsartikel (refereegranskat)abstract
    • γ-Secretase inhibitors have been considered promising drug candidates against Alzheimer's disease (AD) due to their ability to reduce amyloid-β (Aβ) production. However, clinical trials have been halted due to lack of clinical efficacy and/or side effects. Recent in vitro studies suggest that low doses of γ-secretase inhibitors may instead increase Aβ production. Using a stem cell-derived human model of cortical neurons and low doses of the γ-secretase inhibitor DAPT, the effects on a variety of Aβ peptides were studied using mass spectrometry. One major focus was to develop a novel method for specific detection of oligomeric Aβ (oAβ), and this was used to study the effects of low-dose γ-secretase inhibitor treatment on intracellular oAβ accumulation. Low-dose treatment (2 and 20nM) with DAPT increased the secretion of several Aβ peptides, especially Aβx-42. Furthermore, using the novel method for oAβ detection, we found that 2nM DAPT treatment of cortical neurons resulted in increased oAβ accumulation. Thus, low dose-treatment with DAPT causes both increased production of long, aggregation-prone Aβ peptides and accumulation of intracellular Aβ oligomers, both believed to contribute to AD pathology.
  • Alosco, Michael L, et al. (författare)
  • Cerebrospinal fluid tau, Aβ, and sTREM2 in Former National Football League Players: Modeling the relationship between repetitive head impacts, microglial activation, and neurodegeneration.
  • 2018
  • Ingår i: Alzheimer's & dementia : the journal of the Alzheimer's Association. - 1552-5279. ; 14:9, s. 1159-1170
  • Tidskriftsartikel (refereegranskat)abstract
    • Cerebrospinal fluid (CSF) protein analysis may facilitate detection and elucidate mechanisms of neurological consequences from repetitive head impacts (RHI), such as chronic traumatic encephalopathy. We examined CSF concentrations of total tau (t-tau), phosphorylated tau, and amyloid β1-42 and their association with RHI in former National Football League (NFL) players. The role of microglial activation (using sTREM2) was examined as a pathogenic mechanism of chronic traumatic encephalopathy.Sixty-eight former NFL players and 21 controls underwent lumbar puncture to quantify t-tau, p-tau181, amyloid β1-42, and sTREM2 in the CSF using immunoassays. The cumulative head impact index estimated RHI.No between-group differences for CSF analytes emerged. In the former NFL players, the cumulative head impact index predicted higher t-tau concentrations (P = .041), and higher sTREM2 levels were associated with higher t-tau concentrations (P = .009).In this sample of former NFL players, greater RHI and increased microglial activation were associated with higher CSF t-tau concentrations.
  • Alves, G., et al. (författare)
  • CSF A beta(42) predicts early-onset dementia in Parkinson disease
  • 2014
  • Ingår i: Neurology. - 0028-3878. ; 82:20, s. 1784-1790
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective:To test in vivo the proposal from clinicopathologic studies that -amyloid (A) pathology shortens the time to dementia in Parkinson disease (PD), and to explore the utility of CSF A and related measures as early prognostic biomarkers of dementia in an incident PD cohort.Methods:We assessed a population-based incident cohort of 104 patients with PD who underwent lumbar puncture at diagnosis. We analyzed CSF concentrations of A42, A40, and A38 using a multiplexed immunoassay with electrochemiluminescence (ECL) detection and levels of A42, total tau, and phosphorylated tau using ELISA. Patients were followed prospectively for 5 years. Dementia was diagnosed according to published criteria.Results:CSF levels of A42 were significantly decreased in patients who developed dementia (n = 20, 19.2%) compared to those who did not (n = 84, 80.8%), as measured by ECL (-33%, p = 0.006) as well as ELISA (-36%, p < 0.001). No differences were observed for other markers. Low A42 values predicted a substantially increased risk for subsequent dementia at high sensitivity (85%), with hazard ratios of 9.9 (95% confidence interval 2.3-43.5, p = 0.002) for A42(ECL) <376 pg/mL and 7.6 (2.2-26.4, p = 0.001) for A42(ELISA) <443 pg/mL, after adjustment for baseline age and PD-mild cognitive impairment (MCI) status. A42 reductions tended to precede the onset of PD-MCI that progressed to dementia.Conclusions:These in vivo data support the role of A pathology in the etiology and highlight the potential utility of CSF A42 as an early prognostic biomarker of dementia associated with PD.
  • Alves, Guido, et al. (författare)
  • CSF amyloid-β and tau proteins, and cognitive performance, in early and untreated Parkinson's Disease: the Norwegian ParkWest study
  • 2010
  • Ingår i: Journal of neurology, neurosurgery, and psychiatry. - 1468-330X. ; 81:10, s. 1080-1086
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Alzheimer's disease (AD) pathology is found in a considerable portion of patients with Parkinson's disease (PD), particularly those with early dementia (PDD). Altered cerebrospinal fluid (CSF) levels of amyloid-beta (Abeta) and tau proteins have been found in PDD, with intermediate changes for Abeta42 in non-demented PD. The authors investigated whether AD-related CSF protein levels are altered and relate to neuropsychological performance in early, untreated PD. Methods CSF concentrations of Abeta42, Abeta40 and Abeta38 were measured by electrochemiluminiscene and levels of total tau (T-tau) and phosphorylated tau (P-tau) by ELISA in 109 newly diagnosed, unmedicated, non-demented, community-based PD patients who had undergone comprehensive neuropsychological testing, and were compared with those of 36 age-matched normal controls and 20 subjects with mild AD. Results PD patients displayed significant reductions in Abeta42 (19%; p=0.009), Abeta40 (15.5%; p=0.008) and Abeta38 (23%; p=0.004) but not T-tau (p=0.816) or P-tau (p=0.531) compared with controls. CSF Abeta42 reductions in PD were less marked than in AD (53%; p=0.002). Sequential regression analyses demonstrated significant associations between CSF levels of Abeta42 (beta=0.205; p=0.019), Abeta40 (beta=0.378; p<0.001) and Abeta38 (beta=0.288; p=0.001) and memory impairment, but not executive-attentional or visuospatial dysfunction. Tau protein levels did not correlate with cognitive measures. Conclusion CSF Abeta levels are altered in a subset of patients with early PD and relate to memory impairment. Our study suggests that alterations in Abeta protein metabolism may contribute to the heterogeneity in pattern and course of cognitive decline associated with PD. Longitudinal studies are needed to clarify the clinical significance of CSF Abeta peptides as prognostic biomarkers in PD.
  • Alves, Guido, et al. (författare)
  • CSF Aβ42 predicts early-onset dementia in Parkinson disease.
  • 2014
  • Ingår i: Neurology. - 1526-632X. ; 82:20, s. 1784-90
  • Tidskriftsartikel (refereegranskat)abstract
    • To test in vivo the proposal from clinicopathologic studies that β-amyloid (Aβ) pathology shortens the time to dementia in Parkinson disease (PD), and to explore the utility of CSF Aβ and related measures as early prognostic biomarkers of dementia in an incident PD cohort.
  • Anckarsäter, Rolf, 1956-, et al. (författare)
  • Non-neurological surgery and cerebrospinal fluid biomarkers for neuronal and astroglial integrity.
  • 2014
  • Ingår i: Journal of neural transmission (Vienna, Austria : 1996). - 1435-1463. ; 121:6, s. 649-653
  • Tidskriftsartikel (refereegranskat)abstract
    • Non-neurological surgery has both acute and long-term effects on the brain. Markers for Alzheimer pathology may be used to study surgically induced neurological changes relevant for postoperative confusion, asthenia or cognitive decline. Inflammatory biomarkers, total tau (T-tau) and phosphorylated tau (P-tau) were recently shown to increase progressively in the cerebrospinal fluid (CSF) during surgery for nasal CSF leak, suggesting a neuroinflammatory response with signs of neuronal damage. We used a study group of 35 patients, undergoing knee arthroplasty with a spinal blockade and propofol sedation, to replicate this finding. Five CSF biomarkers were analyzed before, 3 h after and on the morning after the interventions: T-tau and P-tau for cortical axonal integrity and tangle pathology, respectively, the 42 amino acids form of amyloid β (Aβ42) for plaque formation, neurofilament light (NFL) for the integrity of large-caliber myelinated axons and glial fibrillary acidic protein (GFAp) for astroglial cell integrity. CSF T-tau concentrations increased significantly during and after surgery (p = 0.028) and were significantly correlated with the administered doses of bupivacaine. P-tau, Aβ42 and NFL remained unchanged, while the mean GFAp concentration increased with a large standard deviation. CSF T-tau and P-tau correlated significantly with the CSF/serum albumin ratios as an indicator of blood-brain barrier permeability. Findings from earlier studies showing a significant increase in biomarkers for Alzheimer's pathology during surgery were partly replicated, as neurochemical signs of impaired cortical axonal integrity during non-neurological surgery were detected. Bupivacaine may be involved in these reactions.
Skapa referenser, mejla, bekava och länka
  • Resultat 1-10 av 639
fritt online (25)
Typ av publikation
tidskriftsartikel (544)
forskningsöversikt (52)
konferensbidrag (23)
bokkapitel (11)
bok (7)
samlingsverk (redaktörskap) (1)
visa fler...
annan publikation (1)
visa färre...
Typ av innehåll
refereegranskat (588)
övrigt vetenskapligt (50)
populärvet., debatt m.m. (1)
Blennow, Kaj, 1958-, (637)
Zetterberg, Henrik, ... (481)
Andreasson, Ulf, 196 ... (77)
Portelius, Erik, 197 ... (73)
Mattsson, Niklas, 19 ... (52)
Wallin, Anders, 1950 ... (47)
visa fler...
Skoog, Ingmar, 1954- ... (41)
Hampel, Harald (36)
Brinkmalm, Gunnar, (33)
Brinkmalm-Westman, A ... (31)
Rosengren, Lars, 195 ... (29)
Hansson, Oskar (28)
Höglund, Kina, 1976- ... (21)
Shaw, Leslie M (20)
Bjerke, Maria, 1977- ... (19)
Kern, Silke, (18)
Lewczuk, Piotr (18)
Gobom, Johan, (18)
Johnson, Sterling C (17)
Trojanowski, John Q (17)
de Leon, Mony J (16)
Gustafson, Deborah, ... (15)
Molinuevo, José Luis (15)
Östling, Svante, 195 ... (15)
Asthana, Sanjay (15)
Engelborghs, Sebasti ... (15)
Hagberg, Lars, 1951- ... (14)
Pannee, Josef, 1979- ... (14)
Carlsson, Cynthia M (14)
Nilsson, Staffan, 19 ... (13)
Waern, Margda, 1955- ... (13)
Andreasen, Niels (13)
Parnetti, Lucilla (13)
Lista, Simone (13)
Dubois, Bruno (13)
Bendlin, Barbara B (13)
Olsson, Bob, 1969-, (12)
Vanderstichele, Hugo (12)
Börjesson-Hanson, An ... (12)
Gustavsson, Mikael K ... (11)
Mattsson, Niklas, (11)
Sjögren, Magnus, (11)
Skillbäck, Tobias, (11)
Nordlund, Arto, 1962 ... (11)
Teunissen, Charlotte ... (11)
Edman, Åke, (11)
Rolstad, Sindre, 197 ... (11)
Fagan, Anne M (11)
Scheltens, Philip, (11)
Teipel, Stefan J (11)
visa färre...
Göteborgs universitet (637)
Karolinska Institutet (27)
Lunds universitet (23)
Chalmers tekniska högskola (16)
Uppsala universitet (6)
Linköpings universitet (5)
visa fler...
Högskolan i Skövde (2)
Umeå universitet (1)
Luleå tekniska universitet (1)
Stockholms universitet (1)
Örebro universitet (1)
visa färre...
Engelska (619)
Svenska (20)
Forskningsämne (UKÄ/SCB)
Medicin och hälsovetenskap (631)
Samhällsvetenskap (16)
Naturvetenskap (14)


pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy