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Wyszukujesz frazę "amyloid precursor protein" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Icariin as a new potential drug in Alzheimer disease treatment - a review
Autorzy:
Jasielski, P.P.
Piedel, F.
Petit, V.
Rejdak, K.
Powiązania:
https://bibliotekanauki.pl/articles/2098999.pdf
Data publikacji:
2019
Wydawca:
Instytut Medycyny Wsi
Tematy:
Alzheimer disease
Icariin
amyloid precursor protein
neuroprotective effect
Opis:
Introduction. Alzheimer disease (AD) is one of the best-known diseases. It is neurodegenerative disease characterized by gradual memory loss and dysfunction of behaviour. The pathogenesis of this disease is unclear. Icariin (ICA) is a flavonoid found in a Chinese medicinal herb. It is recognised for a wide range of biological and medical activities: anti-tumour and anti-inflammatory, and also has an impact on the nervous system: stimulates neuroproliferation and prevents neuron’s apoptosis. ICA may have a potential role in AD disease treatment. Objective. The purpose of this article is to review current knowledge about mechanisms and use of ICA in AD treatment. State of knowledge. AD does not present established pathomechanism, about which there are some hypotheses. Each hypothesis mentioned and checked in this review, with result that ICA may have a potential role. One well-known hypothesis is that about amylolytic which is associated with amyloid precursor protein (APP) gene mutation, which leads to amyloid beta (Aβ) protein accumulation and to occurenc of the disease. In this hypothesis, ICA may inhibit Aβ protein aggregation or alter APP expression. ICA may stifle neuronal apoptosis and promote neurogenesis and neuromodulation. According to other hypotheses, ICA could also impact on iron overload in the brain, harmful for neurons hyperhomocysteinaemia, disorder of the intracellular calcium management. Modification of theTau protein structure is another one theory of ICA action. Flavonoid from China may also have an influence on axonal transport. Conclusions. According to the literature there is no single mechanism of ICA action in slowing down AD progress. A wide range of therapeutic points is demonstrated by the broad effect of this substance. Further research is mandatory.
Źródło:
Journal of Pre-Clinical and Clinical Research; 2019, 13, 4; 167-169
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gamma-secretase complex in plant cells
Autorzy:
Skrzypczak, T.
Smolarkiewicz, M.
Wojtaszek, P.
Powiązania:
https://bibliotekanauki.pl/articles/80341.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
gamma-secretase
beta-amyloid peptide
beta-amyloid precursor protein
proteolysis
calcium homeostasis
apoptosis
synapse
intercellular junction
Arabidopsis
plant cell
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chromatin acetylation, β-amyloid precursor protein and its binding partner FE65 in DNA double strand break repair
Autorzy:
Szumiel, Irena
Foray, Nicolas
Powiązania:
https://bibliotekanauki.pl/articles/1039940.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
chromatin acetylation
FE65
MOF acetyltransferase
DNA double strand break repair
β-amyloid precursor protein
Tip60 histone acetyltransferase
heterochromatin protein 1
Opis:
Among post-translational modifications of chromatin proteins taking place in DNA double strand break (DSB) repair, acetylation plays a prominent role. This review lists several facts and hypotheses concerning this process. Lack of acetyltransferase TIP60 (HIV-Tat interacting protein of 60 kDa) activity results in cells with defective DSB repair. The enzyme is present in the nucleus in a multimeric protein complex. TIP60 dependent activation of ATM (ataxia telangiectasia mutated kinase) is an early event in the response to DNA breakage. Other important acetylations are those of histones H4 and γH2AX. Correct reconstruction of the damaged site is critical for survival and prevention of genetic and epigenetic changes in the cell that may affect the function of its daughter cells. Recently, two proteins with previously unsuspected functions in DSB repair have been identified as active in this process: Alzheimer β-amyloid precursor protein (APP) and its binding partner FE65, β-amyloid precursor binding protein. Their participation in DSB repair in both neuronal and non-neuronal cells is related to acetylation carried out by the acetyltransferase complex. The same function is ascribed to heterochromatin protein 1 (HP1). So far, the relations (if any) between TIP60 activation by HP1 and by the FE65 complex remain unidentified.
Źródło:
Acta Biochimica Polonica; 2011, 58, 1; 11-18
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic study of familial cases of Alzheimers disease.
Autorzy:
Kowalska, Anna
Pruchnik-Wolińska, Danuta
Florczak, Jolanta
Modestowicz, Renata
Szczech, Józef
Kozubski, Wojciech
Rossa, Grzegorz
Wender, Mieczysław
Powiązania:
https://bibliotekanauki.pl/articles/1043353.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
neurodegeneration
dementia
presenilin 1 gene
amyloid precursor protein gene
Alzheimer's disease
mutation
presenilin 2 gene
Opis:
A small number (1-5%) of Alzheimer's disease (AD) cases associated with the early-onset form of the disease (EOAD) appears to be transmitted as a pure genetic, autosomal dominant trait. To date, three genes responsible for familial EOAD have been identified in the human genome: amyloid precursor protein (APP), presenilin 1 (PS1), and presenilin 2 (PS2). Mutations in these genes account for a significant fraction (18 to 50%) of familial cases of early onset AD. The mutations affect APP processing causing increased production of the toxic Aβ42 peptide. According to the "amyloid cascade hypothesis", aggregation of the Aβ42 peptide in brain is a primary event in AD pathogenesis. In our study of twenty AD patients with a positive family history of dementia, 15% (3 of 20) of the cases could be explained by coding sequence mutations in the PS1 gene. Although a frequency of PS1 mutations is less than 2% in the whole population of AD patients, their detection has a significant diagnostic value for both genetic counseling and treatment in families with AD.
Źródło:
Acta Biochimica Polonica; 2004, 51, 1; 245-242
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alzheimers disease: Its origin at the membrane, evidence and questions.
Autorzy:
Buchet, Rene
Pikuła, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/1044315.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
β-amyloid precursor protein
membrane proteases
Alzheimer's disease
lipid composition
membrane microdomains
Opis:
Numerous results on membrane lipid composition from different regions of autopsied Alzheimer's disease brains in comparison with corresponding fractions isolated from control brains revealed significant differences in serine- and ethanolamine-containing glycerophospholipid as well as in glycosphingolipid content. Changes in membrane lipid composition are frequently accompanied by alterations in membrane fluidity, hydrophobic mismatch, lipid signaling pathways, transient formation and disappearance of lipid microdomains, changes in membrane permeability to cations and variations of other membrane properties. In this review we focus on possible implications of altered membrane composition on β-amyloid precursor protein (APP) and on proteolysis of APP leading eventually to the formation of neurotoxic β-amyloid (Aβ) peptides, the major proteinaceous component of extracellular senile plaques, directly involved in Alzheimer's disease pathogenesis.
Źródło:
Acta Biochimica Polonica; 2000, 47, 3; 725-733
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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