Recent Advances in Amyloid Research: Molecular Biology, Pharmacology, Pathophysiology, Diagnostic Technology, and Therapeutics

A special issue of Biomedicines (ISSN 2227-9059).

Deadline for manuscript submissions: closed (15 January 2019) | Viewed by 8821

Special Issue Editors


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Guest Editor
Department of Neuro Health Innovation, Institute for Biomedical Sciences, Shinshu University, Matsumoto 390-8621, Japan
Interests: pathophysiology of citrin deficiency; establishment of the treatments for citrin deficiency; protein-chemistry

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Guest Editor
Department of Neurology and Rheumatology, Shinshu University School of Medicine, Matsumoto, Japan
Interests: ATTR amyloidosis; biochemical featutes of amyloid fibrils; cell biology; amyloid imaging; therapeutics

Special Issue Information

Dear Colleagues,

Amyloidosis is one of the representative misfolded protein disorders, resulting from intra or extracellular accumulation of amyloid fibrils. While amyloidosis was previously quite an intractable disease, recent basic research on the pathogenesis of several amyloidoses has gradually been able to elucidated several types of amyloidosis, which have become treatable. However, we need more detailed information on amyloidosis and its pathogenesis. Therefore, this Special Issue of Biomedicines will focus on recent advance in amyloid research, including new insights into molecular biology, pharmacology, pathophysiology, and therapeutics. In addition, as it will be more important to make a correct diagnosis in the early stages of the disease after the establishment of effective treatments, submissions regarding new diagnostic procedures are welcome.

Prof. Masahide Yazaki
Prof. Yoshiki Sekijima
Guest Editors

Manuscript Submission Information

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Keywords

  • Pharmacology
  • Pathology
  • Pathophysiology
  • Biochemistry
  • diagnostic technology
  • new therapies
  • cell biology
  • animal models

Published Papers (1 paper)

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Review

16 pages, 6907 KiB  
Review
Ultrastructure in Transthyretin Amyloidosis: From Pathophysiology to Therapeutic Insights
by Haruki Koike and Masahisa Katsuno
Biomedicines 2019, 7(1), 11; https://doi.org/10.3390/biomedicines7010011 - 05 Feb 2019
Cited by 48 | Viewed by 8457
Abstract
Transthyretin (TTR) amyloidosis is caused by systemic deposition of wild-type or variant amyloidogenic TTR (ATTRwt and ATTRv, respectively). ATTRwt amyloidosis has traditionally been termed senile systemic amyloidosis, while ATTRv amyloidosis has been called familial amyloid polyneuropathy. Although ATTRwt amyloidosis has classically been regarded [...] Read more.
Transthyretin (TTR) amyloidosis is caused by systemic deposition of wild-type or variant amyloidogenic TTR (ATTRwt and ATTRv, respectively). ATTRwt amyloidosis has traditionally been termed senile systemic amyloidosis, while ATTRv amyloidosis has been called familial amyloid polyneuropathy. Although ATTRwt amyloidosis has classically been regarded as one of the causes of cardiomyopathy occurring in the elderly population, recent developments in diagnostic techniques have significantly expanded the concept of this disease. For example, this disease is now considered an important cause of carpal tunnel syndrome in the elderly population. The phenotypes of ATTRv amyloidosis also vary depending on the mutation and age of onset. Peripheral neuropathy usually predominates in patients from the conventional endemic foci, while cardiomyopathy or oculoleptomeningeal involvement may also become major problems in other patients. Electron microscopic studies indicate that the direct impact of amyloid fibrils on surrounding tissues leads to organ damage, whereas accumulating evidence suggests that nonfibrillar TTR, such as oligomeric TTR, is toxic, inducing neurodegeneration. Microangiopathy has been suggested to act as an initial lesion, increasing the leakage of circulating TTR. Regarding treatments, the efficacy of liver transplantation has been established for ATTRv amyloidosis patients, particularly patients with early-onset amyloidosis. Recent phase III clinical trials have shown the efficacy of TTR stabilizers, such as tafamidis and diflunisal, for both ATTRwt and ATTRv amyloidosis patients. In addition, a short interfering RNA (siRNA), patisiran, and an antisense oligonucleotide (ASO), inotersen, have been shown to be effective for ATTRv amyloidosis patients. Given their ability to significantly reduce the production of both wild-type and variant TTR in the liver, these gene-silencing drugs seem to be the optimal therapeutic option for ATTR amyloidosis. Hence, the long-term efficacy and tolerability of novel therapies, particularly siRNA and ASO, must be determined to establish an appropriate treatment program. Full article
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