Nrf2 activation in the human brain after stroke due to supratentorial intracerebral haemorrhage: a case–control study Article Swipe
Edward Christopher
,
James JM Loan
,
Neshika Samarasekera
,
Karina McDade
,
Jamie Rose
,
Jack Barrington
,
Jeremy Hughes
,
Colin Smith
,
Rustam Al‐Shahi Salman
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1136/bmjno-2021-000238
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1136/bmjno-2021-000238
Aims Pharmacological activation of the antioxidative transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2) improves outcomes in experimental models of intracerebral haemorrhage (ICH). However, the Nrf2 pathway has not been previously studied in humans after ICH. Our study aims to address this gap. Methods We selected cases with fatal ICH from a prospective community-based inception cohort study and age-matched and sex-matched controls who died suddenly of non-neurological disease. We used immunohistochemistry to quantify Nrf2 (% total area stained overall and % of nuclei stained) and CD68 expression in controls and perihaematomal, ipsilateral and contralateral brain tissue from cases. We measured downstream haem oxygenase-1 (HMOX1) and NAD(P)H dehydrogenase quinone 1 [NQO1] expression using RNA in situ hybridisation. Results 26 ICH cases (median age: 82 (IQR 76–86); 13 (50%) male) and eight controls (median age: 79 (IQR 77–80); 3 (37.5%) male) were included. We found no significant differences in overall % of Nrf2 staining between ICH cases and controls. However, the mean % of nuclei staining for Nrf2 seemed higher in perihaematomal compared with contralateral regions, although this was only statistically significant >60 days after ICH (25% (95% CI 17% to 33%) vs 14% (95% CI 11% to 17%), p=0.029). The percentage of perihaematomal tissue staining for CD68 was higher >60 days after ICH (6.75%, 95% CI 2.78% to 10.73%) compared with contralateral tissue (1.45%, 95% CI 0.93% to 1.96%, p=0.027) and controls (1.08%, 95% CI 0.20% to 1.97%, p=0.0008). RNA in situ hybridisation suggested increased abundance of HMOX1 and NQO1 transcripts in perihaematomal versus distant ipsilateral brain tissue obtained <7 days from onset of ICH. Conclusions We found evidence of Nrf2 activation in human brain tissue after ICH. Pharmacological augmentation of Nrf2 activation after ICH might be a promising therapeutic approach.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1136/bmjno-2021-000238
- https://neurologyopen.bmj.com/content/bmjno/4/1/e000238.full.pdf
- OA Status
- diamond
- Cited By
- 9
- References
- 38
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4213111598
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4213111598Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1136/bmjno-2021-000238Digital Object Identifier
- Title
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Nrf2 activation in the human brain after stroke due to supratentorial intracerebral haemorrhage: a case–control studyWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2022Year of publication
- Publication date
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2022-02-01Full publication date if available
- Authors
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Edward Christopher, James JM Loan, Neshika Samarasekera, Karina McDade, Jamie Rose, Jack Barrington, Jeremy Hughes, Colin Smith, Rustam Al‐Shahi SalmanList of authors in order
- Landing page
-
https://doi.org/10.1136/bmjno-2021-000238Publisher landing page
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https://neurologyopen.bmj.com/content/bmjno/4/1/e000238.full.pdfDirect link to full text PDF
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YesWhether a free full text is available
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diamondOpen access status per OpenAlex
- OA URL
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https://neurologyopen.bmj.com/content/bmjno/4/1/e000238.full.pdfDirect OA link when available
- Concepts
-
Medicine, Intracerebral hemorrhage, Immunohistochemistry, Staining, Pathology, CD68, Gastroenterology, Internal medicine, Subarachnoid hemorrhageTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
9Total citation count in OpenAlex
- Citations by year (recent)
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2024: 2, 2023: 3, 2022: 4Per-year citation counts (last 5 years)
- References (count)
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38Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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| corresponding_institution_ids | https://openalex.org/I98677209 |
| sustainable_development_goals[0].id | https://metadata.un.org/sdg/3 |
| sustainable_development_goals[0].score | 0.7699999809265137 |
| sustainable_development_goals[0].display_name | Good health and well-being |
| citation_normalized_percentile.value | 0.78905882 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | False |