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Erschienen in: Inflammopharmacology 5/2020

01.06.2020 | Original Article

Perindopril ameliorates experimental Alzheimer’s disease progression: role of amyloid β degradation, central estrogen receptor and hyperlipidemic-lipid raft signaling

verfasst von: Basim A. S. Messiha, Mohammed R. A. Ali, Mahmoud M. Khattab, Amira M. Abo-Youssef

Erschienen in: Inflammopharmacology | Ausgabe 5/2020

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Abstract

Accumulating evidence indicates that over-stimulation of angiotensin-converting enzyme 1 (ACE1) activity is associated with β-amyloid (Aβ) and phosphorylated tau (p-tau)-induced apoptosis, oxido-nitrosative neuroinflammatory stress and neurodegeneration in Alzheimer’s disease (AD). Alternatively, activation of the ACE2, the metalloprotease neprilysin (Neutral Endopeptidase; NEP) and the insulin-degrading enzyme (IDE) could oppose the effects of ACE1 activation. We aim to investigate the relationship between ACE1/ACE2/NEP/IDE and amyloidogenic/hyperlipidemic-lipid raft signaling in hyperlipidemic AD model. Induction of AD was performed in ovariectomized female rats with high-fat high fructose diet (HFFD) feeding after 4 weeks following d-galactose injection (150 mg/kg). The brain-penetrating ACE1 inhibitor perindopril (0.5 mg/kg/day, p.o.) was administered on a daily basis for 30 days. Perindopril significantly decreased hippocampal expression of ACE1 and increased expression of ACE2, NEP and IDE. Perindopril markedly decreased Aβ1–42, improved lipid profile and ameliorated the lipid raft protein markers caveolin1 (CAV1) and flotillin 1 (FLOT1). This was accompanied by decreased expression of p-tau and enhancement of cholinergic neurotransmission, coupled with decreased oxido-nitrosative neuroinflammatory stress, enhancement of blood–brain barrier (BBB) functioning and lower expression of the apoptotic markers glial fibrillary acidic protein (GFAP), Bax and β-tubulin. In addition, perindopril ameliorated histopathological damage and improved learning, cognitive and recognition impairment as well as depressive behavior in Morris water maze, Y maze, novel object recognition and forced swimming tests, respectively. Conclusively, perindopril could improve cognitive defects in AD rats, at least through activation of ACE2/NEP/IDE and inhibition of ACE1 and subsequent modulation of amyloidogenic/hyperlipidemic-lipid raft signaling and oxido-nitrosative stress.
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Metadaten
Titel
Perindopril ameliorates experimental Alzheimer’s disease progression: role of amyloid β degradation, central estrogen receptor and hyperlipidemic-lipid raft signaling
verfasst von
Basim A. S. Messiha
Mohammed R. A. Ali
Mahmoud M. Khattab
Amira M. Abo-Youssef
Publikationsdatum
01.06.2020
Verlag
Springer International Publishing
Erschienen in
Inflammopharmacology / Ausgabe 5/2020
Print ISSN: 0925-4692
Elektronische ISSN: 1568-5608
DOI
https://doi.org/10.1007/s10787-020-00724-4

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