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Aloe Vera Inhibits Protein Fibrillation: Mechanistic Biophysical Evaluation.

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Aloe vera extract effectively inhibits protein fibrillation, a process linked to neurodegenerative diseases. Its component, aloin, also shows potent anti-fibrillogenic properties, highlighting natural products as promising therapeutic agents.

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Area of Science:

  • Biochemistry
  • Neuroscience
  • Pharmacology

Background:

  • Protein misfolding and amyloid fibril formation are implicated in neurodegenerative disorders like Alzheimer's and Parkinson's disease.
  • Inhibitors of protein aggregation are crucial for developing therapeutic strategies for these debilitating conditions.
  • Plant-based extracts offer a promising source for potential therapeutic agents due to their safety and efficacy.

Purpose of the Study:

  • To investigate the inhibitory effects of aloe vera extract on hen egg white lysozyme fibrillation.
  • To evaluate the anti-fibrillogenic properties of aloin, a key bioactive component of aloe vera.
  • To explore the potential of natural products as therapeutic interventions for protein aggregation disorders.

Main Methods:

  • Calorimetric, spectroscopic, and microscopic techniques were utilized to assess fibril formation and inhibition.
  • The study employed an integrated approach to verify fibril formation and quantify the inhibitory potential of aloe vera.
  • The anti-fibrillogenic activity of aloin was specifically examined.

Main Results:

  • Aloe vera extract demonstrated the ability to inhibit hen egg white lysozyme fibrillation.
  • Aloe vera extract enhanced the thermal and structural stability of proteins.
  • Aloin, a component of aloe vera, effectively prevented protein fibril formation, likely via hydrophobic and electrostatic interactions.

Conclusions:

  • Aloe vera extract and its component aloin show significant potential as inhibitors of protein aggregation.
  • Plant-derived compounds offer a promising avenue for developing therapeutics with reduced side effects for neurodegenerative diseases.
  • This research underscores the therapeutic value of natural products in combating protein misfolding-related disorders.