ReviewHistology and histopathology2021
The angiotensin converting enzyme 2 (ACE2) system in the brain: possible involvement in Neuro-Covid.
Review in Histology and histopathology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
6 citing papers in PubMed, 7 citations in OpenAlex.
- Autoimmune Features of Post-COVID-19 Vaccination Syndrome and Their Impacts on the Renin-Angiotensin System.Vaccines · 2026Review
- Acute and long-term effects of COVID-19 on brain and mental health: A narrative review.Brain, behavior, and immunity · 2025Review
- COVID-19 causes neuronal degeneration and reduces neurogenesis in human hippocampus.Apoptosis : an international journal on programmed cell death · 2022Article
- Angiotensin-converting enzyme 2 (ACE2): Two decades of revelations and re-evaluation.Peptides · 2022Review
- Localization and expression of the Mas-related G-protein coupled receptor member D (MrgD) in the mouse brain.Heliyon · 2021Article
- Unwanted Exacerbation of the Immune Response in Neurodegenerative Disease: A Time to Review the Impact.Frontiers in cellular neuroscience · 2021Review
Corrections and comments
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Authors and funding
1 author at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The brain has its own intrinsic renin-angiotensin system (RAS) with all its components present in the central nervous system (CNS). Recent data demonstrate that also the main components of the angiotensin concerting enzyme 2 (ACE2) system (at least ACE2 itself, as well as the biologically active angiotensin (1-7) and its cognate receptor Mas) are expressed in the brain. Aside from these members, alamadine and MrgD are discussed as further members that have neuro-active roles in the CNS. Little is known about the possible functions of MrgD within the brain. Concerning angiotensin (1-7) acting through the Mas receptor, data were accumulating that this system is involved in numerous processes contributing to neuronal plasticity and even learning and memory. Malfunctions in the brain ACE2 system are associated with disturbances in neuronal plasticity. Since SARS-CoV-2 has a high affinity towards ACE2, Neuro-Covid may directly or indirectly depend on a disturbed balance in the ACE2 derived angiotensin system in the brain. Since the ACE2 system in the brain is far from being understood, a deeper understanding of e.g. the angiotensin (1-7) / Mas system is needed, especially with regard to the roles of angiotensin (1-7) in neuronal plasticity.
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Registered trials
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.