Walnut oil reduces Aβ levels and increases neurite length in a cellular model of early Alzheimer disease

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dc.contributor.authorEsselun, Carsten
dc.contributor.authorDieter, Fabian
dc.contributor.authorSus, Nadine
dc.contributor.authorFrank, Jan
dc.contributor.authorEckert, Gunter P.
dc.date.accessioned2024-10-23T12:25:46Z
dc.date.available2024-10-23T12:25:46Z
dc.date.issued2022de
dc.description.abstractMitochondria are the cells’ main source of energy. Mitochondrial dysfunction represents a key hallmark of aging and is linked to the development of Alzheimer’s disease (AD). Maintaining mitochondrial function might contribute to healthy aging and the prevention of AD. The Mediterranean diet, including walnuts, seems to prevent age-related neurodegeneration. Walnuts are a rich source of α-linolenic acid (ALA), an essential n3-fatty acid and the precursor for n3-long-chain polyunsaturated fatty acids (n3-PUFA), which might potentially improve mitochondrial function. (2) Methods: We tested whether a lipophilic walnut extract (WE) affects mitochondrial function and other parameters in human SH-SY5Y cells transfected with the neuronal amyloid precursor protein (APP695). Walnut lipids were extracted using a Soxhlet Extraction System and analyzed using GC/MS and HPLC/FD. Adenosine triphosphate (ATP) concentrations were quantified under basal conditions in cell culture, as well as after rotenone-induced stress. Neurite outgrowth was investigated, as well as membrane integrity, cellular reactive oxygen species, cellular peroxidase activity, and citrate synthase activity. Beta-amyloid (Aβ) was quantified using homogenous time-resolved fluorescence. (3) Results: The main constituents of WE are linoleic acid, oleic acid, α-linolenic acid, and γ- and δ-tocopherol. Basal ATP levels following rotenone treatment, as well as citrate synthase activity, were increased after WE treatment. WE significantly increased cellular reactive oxygen species but lowered peroxidase activity. Membrane integrity was not affected. Furthermore, WE treatment reduced Aβ1–40 and stimulated neurite growth. (4) Conclusions: WE might increase ATP production after induction of mitochondrial biogenesis. Decreased Aβ1–40 formation and enhanced ATP levels might enhance neurite growth, making WE a potential agent to enhance neuronal function and to prevent the development of AD. In this sense, WE could be a promising agent for the prevention of AD.en
dc.identifier.swb1806134012
dc.identifier.urihttps://hohpublica.uni-hohenheim.de/handle/123456789/16790
dc.identifier.urihttps://doi.org/10.3390/nu14091694
dc.language.isoengde
dc.rights.licensecc_byde
dc.source2072-6643de
dc.sourceNutrients; Vol. 14, No. 9 (2022) 1694de
dc.subjectWalnut
dc.subjectPoly-unsaturated fatty acids
dc.subjectPUFA
dc.subjectVitamin E
dc.subjectMitochondria
dc.subjectNeurodegeneration
dc.subjectAging
dc.subject.ddc610
dc.titleWalnut oil reduces Aβ levels and increases neurite length in a cellular model of early Alzheimer diseaseen
dc.type.diniArticle
dcterms.bibliographicCitationNutrients, 14 (2022), 9, 1694. https://doi.org/10.3390/nu14091694. ISSN: 2072-6643
dcterms.bibliographicCitation.issn2072-6643
dcterms.bibliographicCitation.issue9
dcterms.bibliographicCitation.journaltitleNutrients
dcterms.bibliographicCitation.volume14
local.export.bibtex@article{Esselun2022, url = {https://hohpublica.uni-hohenheim.de/handle/123456789/16790}, doi = {10.3390/nu14091694}, author = {Esselun, Carsten and Dieter, Fabian and Sus, Nadine et al.}, title = {Walnut Oil Reduces Aβ Levels and Increases Neurite Length in a Cellular Model of Early Alzheimer Disease}, journal = {Nutrients}, year = {2022}, volume = {14}, number = {9}, }
local.export.bibtexAuthorEsselun, Carsten and Dieter, Fabian and Sus, Nadine et al.
local.export.bibtexKeyEsselun2022
local.export.bibtexType@article

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