Evidence map›Paper›PMID 28067897›Full record

ArticleLaboratory investigation; a journal of technical methods and pathology2017

Pathological changes in basement membranes and dermal connective tissue of skin from patients with hereditary cystatin C amyloid angiopathy.

Asbjorg Osk Snorradottir, Helgi J Isaksson, Saevar Ingthorsson, Elias Olafsson, Astridur Palsdottir, Birkir Thor Bragason

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In one paragraph

Article in Laboratory investigation; a journal of technical methods and pathology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.5field-weighted citation impact, top 36% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 10 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Asbjorg Osk SnorradottirInstitute for Experimental Pathology at Keldur, University of Iceland, Reykjavik, Iceland.
Helgi J IsakssonDepartment of Pathology, Landspitali University Hospital, Reykjavik, Iceland.ORCID 0000-0002-1024-686X
Saevar IngthorssonStem Cell Research Unit, Biomedical Center, University of Iceland, Reykjavik, Iceland.
Elias OlafssonFaculty of Medicine, University of Iceland, Reykjavik, Iceland.
Astridur PalsdottirInstitute for Experimental Pathology at Keldur, University of Iceland, Reykjavik, Iceland.
Birkir Thor BragasonInstitute for Experimental Pathology at Keldur, University of Iceland, Reykjavik, Iceland.
Reykjavík University · ISUniversity of Iceland · IS

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hereditary cystatin C amyloid angiopathy (HCCAA) is a genetic disease caused by a mutation in the cystatin C gene. Cystatin C is abundant in cerebrospinal fluid and the most prominent pathology in HCCAA is cerebral amyloid angiopathy due to mutant cystatin C amyloid deposition with associated cerebral hemorrhages, typically in young adult carriers. Analyses of post-mortem brain samples shows that pathological changes are limited to arteries and regions adjacent to arteries. The severity of pathological changes at post-mortem has precluded the elucidation of the evolution of histological changes. Mutant cystatin C deposition in carriers is systemic and has, for example, been described in the skin, suggesting similar pathological mechanisms both in the brain and outside of the central nervous system. The aim of this study was to use skin biopsies from asymptomatic and symptomatic carriers to study intermediate events in HCCAA pathogenesis. We found that cystatin C deposition in minimally affected samples was limited to the basement membrane (BM) between the dermis and epidermis. When the deposits were more advanced, they extended to other BM regions in the skin. Our results showed that the immunoreactivity of the BM protein COLIV was increased to a similar extent in all carrier biopsies and cystatin C deposits were in close association with COLIV. The density of fibroblasts in the upper dermis of carrier skin was increased, whereas the distribution of other cell types examined did not differ compared with control biopsies. COLIV and cystatin C immunoreactivity in carrier biopsies was closely associated with the fibroblasts. The results of this study, in conjunction with our previous results regarding pathological BM changes in leptomeningeal arteries of patients, suggest that BM changes are early and important events in HCCAA pathogenesis that could facilitate cystatin C deposition and aggregation.

Indexed as

AdultAgedBasement MembraneCerebral Amyloid AngiopathyCollagen Type IVConnective TissueCystatin CDermisEpidermisFemaleHeterozygoteHumansImmunohistochemistryMaleMicroscopy, FluorescenceMiddle AgedCollagen Type IVCystatin C

Identifiers

PMID28067897
OpenAlexW2571087973

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.