Evidence map›Paper›PMID 23383397›Full record

ArticleAmerican journal of neurodegenerative disease2012

Interactions between oestrogen and the renin angiotensin system - potential mechanisms for gender differences in Alzheimer's disease.

Thomas Simon O'Hagan, Whitney Wharton, Patrick Gavin Kehoe

Open access · greenAbstract read
In one paragraph

Article in American journal of neurodegenerative disease, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
0.2field-weighted citation impact, top 40% 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

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.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 24 citations in OpenAlex.

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  10. Losartan Mitigates Oxidative Stress in the Brains of Aged and Inflamed IL-10-/- Mice.The journals of gerontology. Series A, Biological sciences and medical sciences · 2022
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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

3 authors at 1 institution in 1 country.

Thomas Simon O'HaganDementia Research Group, John James Laboratories, School of Clinical Sciences, University of Bristol, Frenchay Hospital Bristol, BS16 1LE.
Whitney Wharton
Patrick Gavin Kehoe
Frenchay Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Interactions between oestrogen and the renin angiotensin system (RAS) are reviewed and explored from the perspective where these interactions may modulate risk of developing Alzheimer's disease (AD). AD is more prevalent in women than men, partly attributed to women's increased life expectancy; however underlying vascular differences may also contribute to AD risk. The RAS is a key regulator of blood pressure (BP). Pharmacological inhibition of angiotensin converting enzyme (ACE) and blockade of angiotensin II type 1 receptors (AT1R) are widely used to treat hypertension. Variation in components of the RAS such as ACE, neprilysin (NEP) and AT1R have been reported in AD, some of which may also directly alter AD neuropathology with changes in amyloid beta (Aβ) levels, cognitive decline and neuroinflammation. Recently, RAS inhibiting drugs have been shown to attenuate the incidence, progression and pathology of AD. Oestrogen is also thought to prevent hypertension by reducing the vasoconstrictive actions of the RAS. Reduced oestrogen levels in women during the menopausal transition may therefore increase their risk of hypertension and/or RAS-mediated changes to cerebrovascular or AD pathology. Specifically, oestrogen prevents the production and action of angiotensin II (Ang II), thought to exert harmful effects of the RAS in both hypertension and AD, while also potentially facilitating RAS-mediated Aβ degradation. These oestrogen-RAS interactions may partly explain current conflicting findings regarding oestrogen depletion and hormone therapy with respect to AD risk. Clinical trials targeting either the RAS or oestrogen systems for AD prevention and treatment should perhaps give closer attention to key biochemical components of these pathways as potential confounders to primary and secondary outcome measures.

Indexed as

Alzheimer’s diseasegender differenceOestrogenrenin angiotensin system (RAS)

Identifiers

PMID23383397
PMCPMC3560469
OpenAlexW2166055952

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.