Publications by authors named "Sihem Doggui"

Curcumin, a neuroprotective agent with promising therapeutic approach has poor brain bioavailability. Herein, we demonstrate that curcumin-encapsulated poly(lactide-co-glycolide) (PLGA) 50:50 nanoparticles (NPs-Cur 50:50) are able to prevent the phosphorylation of Akt and Tau proteins in SK-N-SH cells induced by H2O2 and display higher anti-inflammatory and antioxidant activities than free curcumin. PLGA can display various physicochemical and degradation characteristics for controlled drug release applications according to the matrix used.

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Scope: The aim of the present study was to examine the neuroprotective effect of curcumin against the toxicity induced by acrolein and to identify its cellular mechanisms and targets.

Methods And Results: Human neuroblastoma cells SK-N-SH were treated with acrolein. Curcumin, from 5 μM, was able to protect SK-N-SH cells against acrolein toxicity.

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Curcumin, a natural polyphenolic pigment present in the spice turmeric (Curcuma longa), is known to possess a pleiotropic activity such as antioxidant, anti-inflammatory, and anti-amyloid-β activities. However, these benefits of curcumin are limited by its poor aqueous solubility and oral bioavailability. In the present study, a polymer-based nanoparticle approach has been utilized to deliver drugs to neuronal cells.

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Curcumin, the phytochemical agent in the spice turmeric, which gives Indian curry its yellow colour, is also a traditional Indian medicine. It has been used for millennia as a wound-healing agent and for treating a variety of ailments. The antioxidant, anti-inflammatory, antiproliferative and other properties of curcumin have only recently gained the attention of modern pharmacology.

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A rapid increase in incidence of neurodegenerative disorders has been observed with the aging of the population. Alzheimer's disease (AD) is the most common neurodegenerative disorder among the elderly. It is characterized by memory dysfunction, loss of lexical access, spatial and temporal disorientation and impairment of judgement clinically.

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Article Synopsis
  • Alzheimer's disease (AD) is linked to memory loss and is potentially triggered by the accumulation of beta-amyloid (Abeta) peptides and hyperphosphorylated Tau proteins; transthyretin (TTR) may play a neuroprotective role against this process.
  • Researchers studied the relationship between TTR and Abeta deposits in a mouse model of AD, assessing both Abeta burden and spatial learning abilities at 4 and 6 months of age.
  • The study found reduced Abeta plaque burden in younger mice with TTR presence, but no significant differences were observed in older mice; all groups exhibited similar spatial memory deficits, suggesting TTR's impact may be limited in later stages of AD progression.
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