Evidence map›Paper›PMID 18193073›Full record

ArticleBritish journal of pharmacology2008

Cardiovascular reactivity after blockade of angiotensin AT1 receptors in the experimental model of tilting test in conscious rats.

D Bedette, R A S Santos, M A P Fontes

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in British journal of pharmacology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.4field-weighted citation impact, top 34% 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

2 citing papers in PubMed, 11 citations in OpenAlex.

  1. Article
  2. Review
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.

D BedetteHypertension Laboratory, Department of Physiology and Biophysics, ICB, UFMG, Belo Horizonte, Minas Gerais, Brazil.
R A S Santos
M A P Fontes
Universidade Federal de Minas Gerais · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeStudies have shown that the angiotensin II AT(1) receptor antagonist, losartan, accentuates the hypotensive response in the orthostatic stress test (tilt) performed in anaesthetized rats. The same effect was not reported with other AT(1) antagonists. The aim of this study was to re-evaluate the effects of AT(1) receptor blockade on the cardiovascular response to tilt in a model developed for conscious rats. EXPERIMENTAL APPROACH: Rats (n=5-7 per group) were instrumented for infusion of drugs and recording of cardiovascular parameters and, after recovery, placed in a plastic tube positioned over the tilt board. The tilt test was conducted by raising the head side of the tilt board from horizontal position to 75 degrees head up position for 15 min. KEY

resultsCompared with control group (NaCl 0.9%, 1 ml kg(-1)), oral treatment with 1 mg kg(-1) per day of losartan or telmisartan did not alter the blood pressure response during tilt. With the 10 mg kg(-1) dose, both antagonists altered the blood pressure response during tilt (mean maximum changes -11+/-3 mm Hg; P<0.01). A post-tilt hypotension was observed with both doses in losartan and telmisartan groups (-13+/-1 and -9+/-2 mm Hg, respectively; P<0.01). CONCLUSIONS AND IMPLICATIONS: The present results indicate that the effect of losartan on the cardiovascular reactivity to tilt shares a similar profile to that of other AT(1) antagonists. Evidence discussed addresses the importance of using a conscious model for testing the influence of antihypertensive drugs on the cardiovascular reactivity to orthostatic challenges.

Indexed as

Angiotensin II Type 1 Receptor BlockersAnimalsBenzimidazolesBenzoatesBlood PressureDisease Models, AnimalDose-Response Relationship, DrugHypotension, OrthostaticLosartanMaleRatsRats, WistarReceptor, Angiotensin, Type 1Stress, PhysiologicalTelmisartanAngiotensin II Type 1 Receptor BlockersBenzimidazolesBenzoatesLosartanReceptor, Angiotensin, Type 1Telmisartan

Identifiers

PMID18193073
PMCPMC2267269
OpenAlexW1598739621

What OpenQuestion holds

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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.