Evidence map›Paper›PMID 19464961›Full record

ArticleAutonomic neuroscience : basic & clinical2009

Differential endocannabinoid regulation of baroreflex-evoked sympathoinhibition in normotensive versus hypertensive rats.

D T Brozoski, C Dean, F A Hopp, C J Hillard, J L Seagard

Abstract readComparative Study
In one paragraph

Article in Autonomic neuroscience : basic & clinical, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 11% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
  2. Fatty acid amide hydrolase activity in the dorsal periaqueductal gray attenuates neuropathic pain and associated dysautonomia.American journal of physiology. Regulatory, integrative and comparative physiology · 2022
    Article
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  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Sympathetic nervous system in obesity-related hypertension: mechanisms and clinical implications.Hypertension research : official journal of the Japanese Society of Hypertension · 2012
    Review
  12. Article
  13. Article
  14. 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

5 authors at 2 institutions in 1 country.

D T BrozoskiDepartment of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA.
C Dean
F A Hopp
C J Hillard
J L Seagard
Medical College of Wisconsin · USMilwaukee VA Medical Center · US

Funding

BIOCHEMISTRY OF ANANDAMIDE, AN ENDOGENOUS CANNABINOIDR01DA009155 · NIDA · MEDICAL COLLEGE OF WISCONSIN · PI HILLARD, CECILIA J · 1996 to 2011
$3.4M
NIDA NIH HHS DA 09155NIDA NIH HHS R01 DA009155
6 · The paper itself

Abstract

Previously, we found that endocannabinoids acting at cannabinoid 1 receptors in the nucleus tractus solitarius prolonged baroreflex inhibition of renal sympathetic nerve activity in normotensive Sprague Dawley rats. The current study investigated whether endocannabinoid signaling was altered in spontaneously hypertensive rats, a model marked by elevated sympathetic activity and depressed baroreflex responses. The effects of endocannabinoids in the nucleus tractus solitarius on baroreflex control of renal sympathetic nerve activity evoked by systemic pressor changes or by direct stimulation of nucleus tractus solitarius neurons, which produced depressor and sympathoinhibitory responses, were studied in Sprague Dawley rats, Wistar Kyoto rats, and spontaneously hypertensive rats. Evoked responses were compared before and after microinjection of AM404, which prolonged actions of endogenous endocannabinoids, or microinjection of an endocannabinoid, anandamide, into the baroreceptive region of the nucleus tractus solitarius. AM404 microinjections significantly prolonged evoked sympathoinhibition in Sprague Dawley and Wistar Kyoto rats, but had little effect in spontaneously hypertensive rats. Microinjections of anandamide prolonged sympathoinhibition in Sprague Dawley rats, with lesser effects in Wistar Kyoto rats and no effects in spontaneously hypertensive rats. Parallel studies found that density of binding sites of endocannabinoids in the nucleus tractus solitarius was significantly reduced in spontaneously hypertensive rats versus the normotensive rats. Results indicate that attenuated function of the endocannabinoid system in the nucleus tractus solitarius of spontaneously hypertensive rats resulted in less modulation of baroreflex-evoked sympathoinhibition and that reduced cannabinoid 1 receptor density could contribute to blunted baroreflex-induced sympathoinhibition and elevated sympathetic tone characteristic of spontaneously hypertensive rats.

Indexed as

EndocannabinoidsAnalgesicsAnimalsArachidonic AcidsBaroreflexBlood PressureCannabinoid Receptor ModulatorsCyclohexanolsGABA AntagonistsHypertensionMaleProtein BindingPyridazinesRatsRats, Inbred SHRRats, Sprague-Dawley3-(2-hydroxy-4-(1,1-dimethylheptyl)phenyl)-4-(3-hydroxypropyl)cyclohexanolAnalgesicsArachidonic AcidsCannabinoid Receptor ModulatorsCyclohexanolsEndocannabinoidsGABA AntagonistsgabazineN-(4-hydroxyphenyl)arachidonylamidePyridazinesReceptor, Cannabinoid, CB1Tritium

Identifiers

PMID19464961
PMCPMC3815570
OpenAlexW2037039212

What OpenQuestion holds

Textmetadata
LicenceTDM
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.