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About me

My research is focused on understanding the molecular mechanism behind risk factor for neurodegenerative disorders.  I am leading a research group of 14 people, including 1 assistant professor, 9 postdocs and 2 PhD student. I am cosupervisor of 2 PhD students. So far, I have directed 10 PhD thesis.

Present positions

From 2016- Professor in Molecular Neurogeriatrics

From 2006- Deputy Head of KI-Alzheimer disease research center / Neurogeriatrics

From 2014- Codirector of Swedish Brain Power. A national network of centers of excellence in Neurodegenerative disorders.

From 2014- Vice-Head of the department of neurobiology, care sciences and society

Education

2016 Professor. Karolinska Institutet

2011 Senior University Lecturer. Karolinska Institutet.

2010 Associate Professor. Karolinska Institutet.

2010 Course for future academic leaders (MAL). Karolinska Institutet.

2002 Ph.D. in medicine (Neuroscience). Karolinska Institutet.  Thesis: Apolipoprotein E and Alzheimer's disease: Signals and effects

Research description

Over the years, genetic and epidemiological studies have reported gene or environmental factors that increase the risk for Alzheimer's Disease (AD), suggesting that it is a disease of multifactorial origin. We aim to contribute to understand the effects of risk factors for AD, and to define to which extent these factors are secondary actors or driving forces for cognitive decline.

Apolipoprotein E, hypercholesterolemia and AD

ApoE is the main cholesterol transporter and the presence of the E4 isoform is the major risk factor for AD. High cholesterol levels in blood is another risk factor. Our hypothesis is that ApoE4 acts in synergy with environmental factors (like hypercholesterolemia) to affect signaling pathways involved in neurodegeneration. We use several in vivo and in vitro models to explore this hypothesis.

Functions of oxysterols in brain

The metabolism of cholesterol results in the production of several oxysterols, of which the peripherally-produced 27OHC and the brain-produced 24S-OH have been suggested to play a role in AD pathogenesis. However very little is known about the biological role of these oxysterols, with the exception of its affinity for LXR receptors. We have discovered new functions of 24S-OH and 27OHC in brain, related with memory consolidation and vascular regulation. Our findings suggest that these molecules are much more than subproducts of the cellular metabolism, and can be regarded as signalling molecules of importance for normal brain function as well as for neurodegeneration.

Thioredoxin and AD

Oxidative stress (OS) is one of the pathological events occurring in AD.  Thioredoxin-1 (TRX1) modulate the redox homeostasis and inhibit the apoptosis signal-regulating kinase (ASK1). We reported that the TRX1 levels is impaired in AD. We showed that Abeta neurotoxicity is mediated by TRX1 oxidations and ASK1 activation. Recently, we have described the presence of a truncated form of TRX1 (TRX80) in the brain. TRX80 is dramatically reduced in AD. Also we found that TRX80 as a protective role on Amyloid-beta neurotoxicity and aggregation. So, far TRX80 is the only endogenous anti-Amyloid beta aggregant peptide described.

Ten Selected Publications in the last 10 years

Bengt Winblad et al. DEFEATING ALZHEIMER'S DISEASE AND OTHER DEMENTIAS: A PRIORITY FOR EUROPEAN SCIENCE AND SOCIETY. The Lancet Neurology. 2016. Volume 15, No. 5, p455–532.

Maioli S, Lodeiro M, Merino-Serrais P, Falahati F, Khan W, Puerta E, Codita A, Rimondini R,  Ramirez MJ , Simmons A, Gil-Bea FJ, Westman E, Cedazo-Minguez A. ALTERATIONS IN BRAIN LEPTIN SIGNALLING IN SPITE OF UNCHANGED CSF LEPTIN LEVELS IN ALZHEIMER’S DISEASE. Aging Cell 2015 Feb;14(1):122-9

Gil-Bea F, Akterin S, Persson T, Mateos L, Sandebring A, Avila-Cariño J, Gutierrez-Rodriguez A, Sundström E, Holmgren A, Winblad B, Cedazo-Minguez A. THIOREDOXIN-80 IS A PRODUCT OF ALPHA-SECRETASE CLEAVAGE THAT INHIBITS AMYLOID-BETA AGGREGATION AND IS DECREASED IN ALZHEIMER'S DISEASE BRAIN. EMBO Mol Med. (2012) Oct;4(10):1097-111. / Faculty of 1000

Ibañez C, Simó C, Martin-Alvarez PJ, Kivipelto M, Winblad B, Cedazo-Minguez A, Cifuentes A.TOWARDS A PREDICTIVE MODEL OF ALZHEIMER'S DISEASE PROGRESSION USING CAPILLARY ELECTROPHORESIS-MASS SPECTROMETRY METABOLOMICS. Anal Chem. (2012) Oct 16;84(20):8532-40.

L.Zheng, A. Terman, M. Hallbeck, N. Dehvari, K. Kågadal, RF Cowburn, E. Benedikz. A.Cedazo-Minguez, OXIDANT INDUCED APOPTOSIS OF CULTURED NEUROBLASTOMA CELLS IS MEDIATED BY AUTOPHAGY OF AMYLOID b-PROTEIN.  Autophagy (2011) 7(12).

L.Mateos, MAM Ismail, FJ. Gil-Bea, R. Schüle, L. Schöls, R. Folkesson, I. Björkhem and A. Cedazo-Mínguez. SIDE-CHAIN OXIDIZED OXYSTEROLS REGULATE THE BRAIN RENIN-ANGIOTENSIN SYSTEM THROUGH A LIVER X RECEPTOR DEPENDENT MECHANISM. J. Biol Chem. (2011) Jul 22;286(29):25574-85.

K.J. Thomas, M. McCoy, J. Blackinton, A. Beilina, M. van der Brug, A. Sandebring, D. Miller, D. Maric, A. Cedazo-Minguez, M R Cookson. DJ-1 ACTS IN PARALLEL TO THE PINK1/PARKIN PATHWAY TO CONTROL MITOCHONDRIAL FUNCTION AND AUTOPHAGY. Hum Mol Genet. 2011 Jan 1;20(1):40-50.

L Mateos, S Akterin, F Gil‐Bea, S Spulber, A Rahman, I Björkhem, M Schultzberg, A Flores-Morales, and A. Cedazo-Mínguez. ACTIVITY-REGULATED CYTOSKELETON-ASSOCIATED PROTEIN IN RODENT BRAIN IS DOWN-REGULATED BY HIGH FAT DIET IN VIVO AND BY 27-HYDROXYCHOLESTEROL IN VITRO. Brain Pathology (2009) Jan;19(1):69-80.

M. Kivipelto,  S. Rovio, T. Ngandu, I.Kåreholt, M. Laitinen, B. Winblad, V. Hachinski, H. Soininen, J. Tuomilehto, A. Cedazo-Minguez, and A. Nissinen. APOLIPOPROTEIN E AND LIFESTYLE DETERMINANTS OF DEMENTIA: A POPULATION BASED STUDY.  Journal of Cellular and Molecular Medicine (2008) 12(6B):2762-71. 

S. Akterin, R.F. Cowburn, A. Miranda-Vizuete, A. Jiménez, N. Bogdanovic, B. Winblad, and A. Cedazo-Minguez. INVOLVEMENT OF GLUTAREDOXIN-1 AND THIOREDOXIN-1 IN BETA AMYLOID TOXICITY. IMPLICATIONS FOR ALZHEIMER’S DISEASE.  Cell Death and Differentiation (2006) 3(9):1454-65. 

Academic honours, awards and prizes

2013. Deputy Head (prefekt) of the Department of Neurobiology, Care Sciences and Society (NVS) at KI.

2009-2012. Vice-Head of the Department of Neurobiology, Care Sciences and Society at KI

2009- present. Member of the Committee for Research and Education at the Geriatric Department of the Swedish Medical Research Council (FoU råd) 

2006, 2007 and 2008. Erik Rönnbergs award for research in geriatric medicine from the Bank of Sweden Tercentenary Foundation

2003 and 2004. Hjärnfonden postdoc (Swedish Brain Foundation)

2003. Svenska Lundbeck stiftelsen. 

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