PMID- 20205668 OWN - NLM STAT- MEDLINE DCOM- 20100609 LR - 20191027 IS - 1875-5828 (Electronic) IS - 1567-2050 (Linking) VI - 7 IP - 1 DP - 2010 Feb TI - Alzheimer's disease (AD) and Mild Cognitive Impairment (MCI) patients are characterized by increased BDNF serum levels. PG - 15-20 AB - Alzheimer's disease (AD) is a neurodegenerative disorder characterized by cognitive decline with loss of memory. In the last years there has been a great interest on the early phases of AD, trying to identify the pathogenic mechanisms of AD and define early treatment modalities. In particular, Mild Cognitive Impairment (MCI) is attractive because it represents a transitional state between normal aging and dementia, although not all MCI patients automatically convert to AD. The neurotrophin brain-derived neurotrophic factor (BDNF) is critical for survival and function of neurons that degenerate in AD and represents a potential neuroprotective agent. However, opposite data on serum levels of BDNF have been reported in AD patients, probably reflecting differences in patient recruitment and stage of the disease. Thus, in this study we measured BDNF serum levels in AD patients (with different degree of severity), MCI patients and healthy subjects. We found that serum BNDF levels were significantly increased in MCI and AD patients when compared to healthy subjects and this increase in AD patients was neither dependent on illness severity, nor on treatment with Acetylcholinesterase inhibitors and/or antidepressant medications. Our findings indicate that BDNF serum levels increase in MCI and AD patients, supporting the hypothesis of an upregulation of BDNF in both preclinical phase of dementia (MCI) and clinical stages of AD. Other studies are necessary to establish a direct link between BDNF peripheral levels and AD longitudinal course, as well as the role of other factors, such as blood cell activation, in determining these events. FAU - Angelucci, Francesco AU - Angelucci F AD - Department of Clinical and Behavioural Neurology, 00179, Rome, Italy. f.angelucci@hsantalucia.it FAU - Spalletta, Gianfranco AU - Spalletta G FAU - di Iulio, Fulvia AU - di Iulio F FAU - Ciaramella, Antonio AU - Ciaramella A FAU - Salani, Francesca AU - Salani F FAU - Colantoni, Luca AU - Colantoni L FAU - Varsi, Ambra Erika AU - Varsi AE FAU - Gianni, Walter AU - Gianni W FAU - Sancesario, Giuseppe AU - Sancesario G FAU - Caltagirone, Carlo AU - Caltagirone C FAU - Bossu, Paola AU - Bossu P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United Arab Emirates TA - Curr Alzheimer Res JT - Current Alzheimer research JID - 101208441 RN - 0 (Biomarkers) RN - 0 (Brain-Derived Neurotrophic Factor) SB - IM MH - Aged MH - Alzheimer Disease/*blood MH - Biomarkers/blood MH - Brain-Derived Neurotrophic Factor/*blood MH - Cognition Disorders/*blood MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Humans MH - Male MH - Neuropsychological Tests EDAT- 2010/03/09 06:00 MHDA- 2010/06/10 06:00 CRDT- 2010/03/09 06:00 PHST- 2008/12/29 00:00 [received] PHST- 2009/02/20 00:00 [accepted] PHST- 2010/03/09 06:00 [entrez] PHST- 2010/03/09 06:00 [pubmed] PHST- 2010/06/10 06:00 [medline] AID - CAR-17 [pii] AID - 10.2174/156720510790274473 [doi] PST - ppublish SO - Curr Alzheimer Res. 2010 Feb;7(1):15-20. doi: 10.2174/156720510790274473.