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Abstract Title:

Ascorbic acid inhibits human insulin aggregation and protects against amyloid induced cytotoxicity.

Abstract Source:

Arch Biochem Biophys. 2017 Apr 12 ;621:54-62. Epub 2017 Apr 12. PMID: 28412155

Abstract Author(s):

Parvez Alam, Ayesha Zainab Beg, Mohammad Khursheed Siddiqi, Sumit Kumar Chaturvedi, Ravi Kant Rajpoot, Mohd Rehan Ajmal, Masihuz Zaman, Ali S Abdelhameed, Rizwan Hasan Khan

Article Affiliation:

Parvez Alam

Abstract:

Protein aggregation into oligomers and fibrils are associated with many human pathophysiologies. Compounds that modulate protein aggregation and interact with preformed fibrils and convert them to less toxic species, expect to serve as promising drug candidates and aid to the drug development efforts against aggregation diseases. In present study, the kinetics of amyloid fibril formation by human insulin (HI) and the anti-amyloidogenic activity of ascorbic acid (AA) were investigated by employing various spectroscopic, imaging and computational approaches. We demonstrate that ascorbic acid significantly inhibits the fibrillation of HI in a dose-dependent manner. Interestingly ascorbic acid destabilise the preformed amyloid fibrils and protects human neuroblastoma cell line (SH- SY5Y) against amyloid induced cytotoxicity. The present data signifies the role of ascorbic acid that can serve as potential molecule in preventing human insulin aggregation and associated pathophysiologies.

Study Type : In Vitro Study
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