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Study of the non-covalent interaction between amyloid-b-peptide and melatonin using electrospray ionization mass spectrometry
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Kemiska sektionen, Kemiska institutionen. Analytisk kemi.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Kemiska sektionen, Kemiska institutionen. Analytisk kemi.
2005 (Engelska)Ingår i: Journal of Mass Spectrometry, nr 40, s. 182-192Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Oxidative stress and unregulated immune response are believed to play a key role in the processes inherent to Alzheimer's disease (AD). The fact that free radicals can result in neurodegeneration suggests that actions against reactive oxygen species may be beneficial in treating and preventing AD. In the light of the suggested link between oxidative stress and AD, it is proposed that antioxidants and, even more, endogenous antioxidants may offer a therapeutic regime for protection against the risk of this disease. For this reason, the formation of non-covalent complexes between amyloid-b-peptide (Ab) or its oxidized forms and melatonin was studied by quadrupole and Fourier transform ion cyclotron resonance electrospray ionization mass spectrometry. The stability of the non-covalent complex was examined under several experimental conditions, such as orifice voltage, pH, presence of organic modifier, concentration and time. Two different digestion protocols combined with mass spectrometric analysis of the resulting peptide fragments were employed in order to locate the binding site of melatonin in Ab.

Ort, förlag, år, upplaga, sidor
2005. nr 40, s. 182-192
Nyckelord [en]
Alzheimer's disease, amyloid-b-peptide, melatonin, non-covalent complexes, electrospray ionization mass spectrometry
Identifikatorer
URN: urn:nbn:se:uu:diva-73848OAI: oai:DiVA.org:uu-73848DiVA, id: diva2:101759
Tillgänglig från: 2005-07-07 Skapad: 2005-07-07 Senast uppdaterad: 2011-01-11

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