In vitro stimulation of tissue-type plasminogen activator by Alzheimer amyloid beta-peptide analogues.

Abstract:

:We have studied the effects of amyloid beta-peptide analogues on the activity of tissue-type plasminogen activator (t-PA) in vitro. We have found that these peptides have a marked stimulatory effect upon plasminogen activation by t-PA, comparable to that of known stimulators of t-PA. This stimulatory activity appears to increase when beta-peptides form aggregated fibrillar structures similar to those found in amyloid deposits. This finding is significant in that it may provide insights into the pathogenesis of hereditary cerebral haemorrhage with amyloidosis-Dutch type (HCHWA-D) and cerebral amyloid angiopathy-related cerebral haemorrhage. It may also provide an explanation for the deaths resulting from intracerebral haemorrhage that have occurred in patients undergoing t-PA treatment for acute myocardial infarction.

journal_name

Nat Med

journal_title

Nature medicine

authors

Kingston IB,Castro MJ,Anderson S

doi

10.1038/nm0295-138

subject

Has Abstract

pub_date

1995-02-01 00:00:00

pages

138-42

issue

2

eissn

1078-8956

issn

1546-170X

journal_volume

1

pub_type

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