Background Many polyphenols have been proposed as broad-spectrum inhibitors of amyloid formation. To investigate structure-activity relationships relevant for the interaction of flavonoids with transthyretin (TTR), the protein associated with familial amyloid polyneuropathy (FAP), we compared the effects of major tea catechins and their larger polymers theaflavins, side-by-side, on TTR amyloid ...

PURPOSE Glaucoma is the leading cause of irreversible blindness in familial amyloidotic polyneuropathy (FAP) patients. Erythropoietin (EPO) is a cytokine that has been shown to play a role in neuroprotection and is endogenously produced in the eye. EPO levels in the aqueous humor are increased in eyes with glaucoma. In this study, we evaluated the EPO concentration in the aqueous humor of FAP a...

Familial amyloid polyneuropathy (FAP) caused by a mutation in transthyretin (TTR) gene is an autosomal dominant inherited disorder. The aim of this study is to explore the pathophysiological mechanism of FAP. We prospectively recruited 12 pauci-symptomatic carriers, 18 patients who harbor a TTR mutation, p.A97S, and two-age matched control groups. Data of nerve excitability test (NET) from ulna...

FAMILIAL amyloid polyneuropathy (FAP) is a genetic disorder inevitably lethal without liver transplantation. This procedure has been performed for FAP since 1990 and this disease is now, by far, the most frequent metabolic indication for liver transplantation, with more than 700 patients having undergone transplantation worldwide. In the last years, results improved significantly, and FAP Met30...

References 1 Radunovic A, Leigh PN. Cu/Zn superoxide dismutase gene mutations in amyotrophic lateral sclerosis: correlation between genotype and clinical features. J Neurol Neurosurg Psychiatry 1996;61:565–672. 2 Ceroni M, Malaspina A, Poloni TE, et al. Clustering of ALS patients in central Italy due to the occurrence of the L84F SOD1 gene mutation. Neurology 1999;53:1064–71. 3 Juneja T, Perica...

BACKGROUND Type I (transthyretin Met30) familial amyloid polyneuropathy (FAP TTR Met30) occurs in 2 endemic foci in Japan. We have also reported late-onset Japanese cases unrelated to an endemic focus and showing distinctive clinicopathologic features. OBJECTIVE To compare clinical and geographic features of FAP TTR Met30 between patients with onset before and after 50 years of age. DESIGN ...

Transthyretin (TTR) transports the retinol-binding protein-vitamin A complex and is a minor transporter of thyroxine in blood. Its tetrameric structure undergoes rate-limiting dissociation and monomer misfolding, enabling TTR to aggregate or to become amyloidogenic. Mutations in the TTR gene generally destabilize the tetramer and/or accelerate tetramer dissociation, promoting amyloidogenesis. T...

Inborn errors of metabolism (IEMs) are a vast, diverse, and heterogeneous set of genetic disorders. Hepatic-based IEMs are a significant cause of morbidity and mortality, and represent a common indication for liver transplantation (LTx) in the paediatric population. This review focuses on four of the most common hepatic-based IEMs where Tx, either as whole organ liver or as isolated hepatocytes...

We report a new kindred with systemic amyloidosis presenting as peripheral neuropathy in the sixth and seventh decades of life. Polymorphism in exon 2 of the transthyretin (TTR) gene was suggested by single strand conformation polymorphism analysis and determined by direct DNA sequencing. We also developed restriction fragment length polymorphism analysis by polymerase chain reaction using a pr...

We report a middle-aged woman with a novel transthyretin (TTR) variant, Leu12Pro. She had extensive amyloid deposition in the leptomeninges and liver as well as the involvement of the heart and peripheral nervous system which characterizes familial amyloid polyneuropathy caused by variant TTR. Clinical features attributed to her leptomeningeal amyloid included radiculopathy, central hypoventila...