scholarly journals Potential role of orexin and sleep modulation in the pathogenesis of Alzheimer’s disease

2014 ◽  
Vol 212 (1) ◽  
pp. 121-121 ◽  
Author(s):  
Jee Hoon Roh ◽  
Hong Jiang ◽  
Mary Beth Finn ◽  
Floy R. Stewart ◽  
Thomas E. Mahan ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Potential Role ◽  
Sleep Modulation

scholarly journals Towards a Consensus on Alzheimer’s Disease Comorbidity?

2021 ◽  
Vol 10 (19) ◽  
pp. 4360
Author(s):  
Iska Avitan ◽  
Yudit Halperin ◽  
Trishna Saha ◽  
Naamah Bloch ◽  
Dana Atrahimovich ◽  
...  
Keyword(s):  
Risk Factors ◽  
Heart Failure ◽  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Potential Role ◽  
Oxygen Species ◽  
Degenerative Diseases ◽  
Comorbid Diseases

Alzheimer’s disease (AD) is often comorbid with other pathologies. First, we review shortly the diseases most associated with AD in the clinic. Then we query PubMed citations for the co-occurrence of AD with other diseases, using a list of 400 common pathologies. Significantly, AD is found to be associated with schizophrenia and psychosis, sleep insomnia and apnea, type 2 diabetes, atherosclerosis, hypertension, cardiovascular diseases, obesity, fibrillation, osteoporosis, arthritis, glaucoma, metabolic syndrome, pain, herpes, HIV, alcoholism, heart failure, migraine, pneumonia, dyslipidemia, COPD and asthma, hearing loss, and tobacco smoking. Trivially, AD is also found to be associated with several neurodegenerative diseases, which are disregarded. Notably, our predicted results are consistent with the previously published clinical data and correlate nicely with individual publications. Our results emphasize risk factors and promulgate diseases often associated with AD. Interestingly, the comorbid diseases are often degenerative diseases exacerbated by reactive oxygen species, thus underlining the potential role of antioxidants in the treatment of AD and comorbid diseases.

scholarly journals Potential Role of Phosphoglycerol Dihydroceramide Produced by Periodontal Pathogen Porphyromonas gingivalis in the Pathogenesis of Alzheimer’s Disease

2020 ◽  
Vol 11 ◽  
Author(s):  
Chiaki Yamada ◽  
Juliet Akkaoui ◽  
Anny Ho ◽  
Carolina Duarte ◽  
Richard Deth ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Porphyromonas Gingivalis ◽  
Virulence Factors ◽  
Potential Role ◽  
Sirtuin 1 ◽  
Periodontal Pathogen ◽  
Secretory Phenotype ◽  
Aβ42 Peptide

BackgroundAmong different types of sphingolipids produced by human cells, the possible engagement of ceramide species in the pathogenesis of Alzheimer’s disease (AD) has attracted recent attention. While ceramides are primarily generated by de novo synthesis in mammalian cells, only a limited number of bacterial species, produce ceramides, including phosphoglycerol dihydroceramide (PGDHC) that is produced by the key periodontal pathogen Porphyromonas gingivalis. Emerging evidence indicates that virulence factors produced by P. gingivalis, such as lipopolysaccharide and gingipain, may be engaged in the initiation and/or progression of AD. However, the potential role of PGDHC in the pathogenesis of AD remains unknown. Therefore, the aim of this study was to evaluate the influence of PGDHC on hallmark findings in AD.Material and MethodsCHO-7WD10 and SH-SY-5Y cells were exposed to PGDHC and lipopolysaccharide (LPS) isolated from P. gingivalis. Soluble Aβ42 peptide, amyloid precursor protein (APP), phosphorylated tau and senescence-associated secretory phenotype (SASP) factors were quantified using ELISA and Western blot assays. ResultsOur results indicate that P. gingivalis (Pg)-derived PGDHC, but not Pg-LPS, upregulated secretion of soluble Aβ42 peptide and expression of APP in CHO-7WD10 cells. Furthermore, hyperphosphorylation of tau protein was observed in SH-SY-5Y cells in response to PGDHC lipid. In contrast, Pg-LPS had little, or no significant effect on the tau phosphorylation induced in SH-SY-5Y cells. However, both PGDHC and Pg-LPS contributed to the senescence of SH-SY5Y cells as indicated by the production of senescence-associated secretory phenotype (SASP) markers, including beta-galactosidase, cathepsin B (CtsB), and pro-inflammatory cytokines TNF-α, and IL-6. Additionally, PGDHC diminished expression of the senescence-protection marker sirtuin-1 in SH-SY-5Y cells.ConclusionsAltogether, our results indicate that P. gingivalis-derived PGDHC ceramide promotes amyloidogenesis and hyperphosphorylation, as well as the production of SASP factors. Thus, PGDHC may represent a novel class of bacterial-derived virulence factors for AD associated with periodontitis.

Alzheimer’s Disease and Environmental Exposure to Lead: The Epidemiologic Evidence and Potential Role of Epigenetics

2012 ◽  
Vol 9 (5) ◽  
pp. 563-573 ◽  
Author(s):  
Kelly M. Bakulski ◽  
Laura S. Rozek ◽  
Dana C. Dolinoy ◽  
Henry L. Paulson ◽  
Howard Hu
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Environmental Exposure ◽  
Potential Role ◽  
Epidemiologic Evidence

The Potential Role of Rho GTPases in Alzheimer's Disease Pathogenesis

2014 ◽  
Vol 50 (2) ◽  
pp. 406-422 ◽  
Author(s):  
Silvia Bolognin ◽  
Erika Lorenzetto ◽  
Giovanni Diana ◽  
Mario Buffelli
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Rho Gtpases ◽  
Potential Role ◽  
Disease Pathogenesis

P3-328 Gene expression induced by moderate ischemia indicates a potential role of ischemia-hypoxia regulated genes in Alzheimer's disease

2004 ◽  
Vol 25 ◽  
pp. S448
Author(s):  
Rainald G. Schmidt-Kastner ◽  
Linda Yick ◽  
Cristina Aguirre-Chen ◽  
Isabel Saul ◽  
Christoph Schmitz ◽  
...  
Keyword(s):  
Gene Expression ◽  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Potential Role
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