Protein Amyloidose Misfolding

Mechanisms, Detection, and Pathological Implications
  • Nigil Satish Jeyashekar
  • Ajit Sadana
  • Tuan Vo-Dinh
Part of the Methods in Molecular Biology™ book series (MIMB, volume 300)


A variety of diseases result because of misfolded protein that deposits in extracellular space in the body. These deposits can be amorphous (disordered) or fibrillar (ordered). Inclusion bodies are an example of amorphous aggregates, and amyloid fibril is an example of fibrillar or ordered aggregates. In this chapter, we discuss a class of diseases caused by fibrillar aggregate deposits or amyloid fibrils called amyloidosis. We also review mechanisms by which different proteins misfold to form amyloid fibrils. Each amyloid fibril formed from a different protein causes a different disease by affecting a different organ in the body. However, the characteristics of different amyloid fibrils, namely structure and morphology, observed by electron microscopy and X-ray fiber diffraction appear to be quite similar in nature. We present therapeutic strategies developed to eliminate amyloid fibril formation. These strategies could possibly avert a whole class of fatal diseases caused by amyloid fibril deposition owing to similar characteristics of the amyloid fibrils.

Key Words

Amyloid fibril formation protein folding transthyretin lysozyme immunoglobulin Alzheimer disease Prions 


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Copyright information

© Humana Press Inc., Totowa, NJ 2005

Authors and Affiliations

  • Nigil Satish Jeyashekar
    • 1
  • Ajit Sadana
    • 2
  • Tuan Vo-Dinh
    • 3
  1. 1.Chemical Engineering DepartmentUniversity of Mississippi, University, MSOak Ridge
  2. 2.Department of Chemical Engineering and Composite Structures and Nanoengineering Research GroupUniversity of Mississippi, University, MSOak Ridge
  3. 3.Center for Advanced Biomedical Photonics, Life Sciences DivisionOak Ridge National LaboratoryOak Ridge

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