Evidence map›Paper›PMID 24026072›Full record

ArticleAmerican journal of physiology. Regulatory, integrative and comparative physiology2013

Central losartan attenuates increases in arterial pressure and expression of FosB/ΔFosB along the autonomic axis associated with chronic intermittent hypoxia.

W David Knight, Ashwini Saxena, Brent Shell, T Prashant Nedungadi, Steven W Mifflin, J Thomas Cunningham

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Regulatory, integrative and comparative physiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
2.2field-weighted citation impact, top 14% 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

35 citing papers in PubMed, 44 citations in OpenAlex.

  1. Article
  2. Spontaneous and evoked angiotensin II sniffer cell activity in the lamina terminalis in vitro.American journal of physiology. Regulatory, integrative and comparative physiology · 2024
    Article
  3. Chronic intermittent hypoxia-induced hypertension: the impact of sex hormones.American journal of physiology. Regulatory, integrative and comparative physiology · 2024
    Review
  4. Review
  5. AT1a-dependent GABAAmerican journal of physiology. Regulatory, integrative and comparative physiology · 2021
    Article
  6. Review
  7. Role of angiotensin II in chronic intermittent hypoxia-induced hypertension and cognitive decline.American journal of physiology. Regulatory, integrative and comparative physiology · 2021
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Angiotensin type 1a receptors in the median preoptic nucleus support intermittent hypoxia-induced hypertension.American journal of physiology. Regulatory, integrative and comparative physiology · 2019
    Article
  16. Article
  17. ATAmerican journal of physiology. Regulatory, integrative and comparative physiology · 2018
    Article
  18. Article
  19. Effect of Chronic Intermittent Hypoxia on Angiotensin II Receptors in the Central Nervous System.Clinical and experimental hypertension (New York, N.Y. : 1993) · 2018
    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

6 authors at 3 institutions in 1 country.

W David KnightDepartment of Molecular Biology and Chemistry, Christopher Newport University, Newport News, Virginia; and.
Ashwini Saxena
Brent Shell
T Prashant Nedungadi
Steven W Mifflin
J Thomas Cunningham
University of North Texas · USUniversity of North Texas Health Science Center · USChristopher Newport University · US

Funding

Neurohumoral Adaptations to Chronic Intermittent Hypoxia: Insights into the Pathophysiology of Sleep ApneaP01HL088052 · NHLBI · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI TONEY, GLENN M · 2008 to 2019
$18.8M
Training in the Neurobiology of Aging and Alzheimer's DiseaseT32AG020494 · NIA · UNIVERSITY OF NORTH TEXAS HLTH SCI CTR · PI ROBERT Clinton BARBER, NATHALIE SUMIEN · 2002 to 2026
$6.9M
NHLBI NIH HHS P01 HL088052NHLBI NIH HHS P01-HL-88052NIA NIH HHS T32 AG020494
6 · The paper itself

Abstract

Chronic intermittent hypoxia (CIH) increases mean arterial pressure (MAP) and FosB/ΔFosB staining in central autonomic nuclei. To test the role of the brain renin-angiotensin system (RAS) in CIH hypertension, rats were implanted with intracerebroventricular (icv) cannulae delivering losartan (1 μg/h) or vehicle (VEH) via miniosmotic pumps and telemetry devices for arterial pressure recording. A third group was given the same dose of losartan subcutaneously (sc). Two groups of losartan-treated rats served as normoxic controls. Rats were exposed to CIH or normoxia for 7 days and then euthanized for immunohistochemistry. Intracerebroventricular losartan attenuated CIH-induced increases in arterial pressure during CIH exposure (0800-1600 during the light phase) on days 1, 6, and 7 and each day during the normoxic dark phase. FosB/ΔFosB staining in the organum vasculosum of the lamina terminalis (OVLT), median preoptic nucleus (MnPO), paraventricular nucleus of the hypothalamus (PVN), the rostral ventrolateral medulla (RVLM), and the nucleus of the solitary tract (NTS) was decreased in icv losartan-treated rats. Subcutaneous losartan also reduced CIH hypertension during the last 2 days of CIH and produced bradycardia prior to the effect on blood pressure. Following sc losartan, FosB/ΔFosB staining was reduced only in the OVLT, MnPO, PVN, and NTS. These data indicate that the central and peripheral RAS contribute to CIH-induced hypertension and transcriptional activation of autonomic nuclei and that the contribution of the central RAS is greater during the normoxic dark phase of CIH hypertension.

Indexed as

Angiotensin II Type 1 Receptor BlockersAnimalsArterial PressureAutonomic Nervous SystemBrainChronic DiseaseCircadian RhythmDisease Models, AnimalDown-RegulationHypertensionHypoxiaInfusions, IntraventricularInfusions, SubcutaneousLosartanMalePhotoperiodAngiotensin II Type 1 Receptor BlockersFosb protein, ratLosartanProto-Oncogene Proteins c-fosangiotensinblood pressurehypertensionsleep apnea

Identifiers

PMID24026072
PMCPMC3840317
OpenAlexW2136158205

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.