Evidence map›Paper›PMID 16403216›Full record

ArticleTheoretical biology & medical modelling2006

Common angiotensin receptor blockers may directly modulate the immune system via VDR, PPAR and CCR2b.

Trevor G Marshall, Robert E Lee, Frances E Marshall

Open access · hybridAbstract read
In one paragraph

Article in Theoretical biology & medical modelling, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
4.2field-weighted citation impact, top 5% 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

28 citing papers in PubMed, 167 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Article
  4. Review
  5. Review
  6. Article
  7. Infiltrating CCR2Scientific reports · 2019
    Article
  8. Article
  9. Review
  10. Article
  11. Sprue-Like Enteropathy Associated With Oxcarbazepine.The American journal of gastroenterology · 2016
    Article
  12. Review
  13. AT1R blockade in adverse milieus: role of SMRT and corepressor complexes.American journal of physiology. Renal physiology · 2015
    Article
  14. Inflammation and vitamin D: the infection connection.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2014
    Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article
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 3 institutions in 1 country.

Trevor G MarshallAutoimmunity Research Foundation, Thousand Oaks, California 91360, USA. trevor.m@AutoimmunityResearch.org
Robert E Lee
Frances E Marshall
Autoimmunity Research Foundation · USBlack Hawk College · USLos Robles Hospital & Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere have been indications that common Angiotensin Receptor Blockers (ARBs) may be exerting anti-inflammatory actions by directly modulating the immune system. We decided to use molecular modelling to rapidly assess which of the potential targets might justify the expense of detailed laboratory validation. We first studied the VDR nuclear receptor, which is activated by the secosteroid hormone 1,25-dihydroxyvitamin-D. This receptor mediates the expression of regulators as ubiquitous as GnRH (Gonadatrophin hormone releasing hormone) and the Parathyroid Hormone (PTH). Additionally we examined Peroxisome Proliferator-Activated Receptor Gamma (PPARgamma), which affects the function of phagocytic cells, and the C-CChemokine Receptor, type 2b, (CCR2b), which recruits monocytes to the site of inflammatory immune challenge.

resultsTelmisartan was predicted to strongly antagonize (Ki asymptotically equal to 0.04 nmol) the VDR. The ARBs Olmesartan, Irbesartan and Valsartan (Ki asymptotically equal to10 nmol) are likely to be useful VDR antagonists at typical in-vivo concentrations. Candesartan (Ki asymptotically equal to 30 nmol) and Losartan (Ki asymptotically equal to 70 nmol) may also usefully inhibit the VDR. Telmisartan is a strong modulator of PPARgamma (Ki asymptotically equal to 0.3 nmol), while Losartan (Ki asymptotically equal to 3 nmol), Irbesartan (Ki asymptotically equal to 6 nmol), Olmesartan and Valsartan (Ki asymptotically equal to 12 nmol) also seem likely to have significant PPAR modulatory activity. Olmesartan and Irbesartan (Ki asymptotically equal to 9 nmol) additionally act as antagonists of a theoretical model of CCR2b. Initial validation of this CCR2b model was performed, and a proposed model for the Angiotensin II Type1 receptor (AT2R1) has been presented.

conclusionMolecular modeling has proven valuable to generate testable hypotheses concerning receptor/ligand binding and is an important tool in drug design. ARBs were designed to act as antagonists for AT2R1, and it was not surprising to discover their affinity for the structurally similar CCR2b. However, this study also found evidence that ARBs modulate the activation of two key nuclear receptors-VDR and PPARgamma. If our simulations are confirmed by experiment, it is possible that ARBs may become useful as potent anti-inflammatory agents, in addition to their current indication as cardiovascular drugs.

Indexed as

Angiotensin Receptor AntagonistsAmino Acid SequenceAngiotensin II Type 1 Receptor BlockersBinding SitesComputer SimulationDose-Response Relationship, DrugGene Expression RegulationModels, MolecularPPAR gammaProtein BindingProtein ConformationReceptors, AngiotensinReceptors, CalcitriolReceptors, CCR2Receptors, ChemokineAngiotensin II Type 1 Receptor BlockersAngiotensin Receptor AntagonistsPPAR gammaReceptors, AngiotensinReceptors, CalcitriolReceptors, CCR2Receptors, Chemokine

Identifiers

PMID16403216
PMCPMC1360063
OpenAlexW1592720347

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.