Evidence map›Paper›PMID 18424005›Full record

ArticleNeuroscience2008

Cardiovascular function of a glutamatergic projection from the hypothalamic paraventricular nucleus to the nucleus tractus solitarius in the rat.

T Kawabe, V C Chitravanshi, K Kawabe, H N Sapru

Open access · greenAbstract read
In one paragraph

Article in Neuroscience, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
0.9field-weighted citation impact, top 32% 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

41 citing papers in PubMed, 53 citations in OpenAlex.

  1. Cellular coding of ingestion in the caudal brainstem.bioRxiv : the preprint server for biology · 2026
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  8. The PVN enhances cardiorespiratory responses to acute hypoxia via input to the nTS.American journal of physiology. Regulatory, integrative and comparative physiology · 2019
    Article
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  14. CBNaunyn-Schmiedeberg's archives of pharmacology · 2017
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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

4 authors at 2 institutions in 1 country.

T KawabeDepartment of Neurological Surgery, UMDNJ-New Jersey Medical School, Newark, NJ 07103, USA.
V C Chitravanshi
K Kawabe
H N Sapru
Neurological Surgery · USRutgers, The State University of New Jersey · US

Funding

Central Cardiovascular Regulation: Role of Urocortin IIIR01HL024347 · NHLBI · UNIV OF MED/DENT OF NJ-NJ MEDICAL SCHOOL · PI SAPRU, HREDAY N. · 1985 to 2012
$4.0M
Central Cardiovascular Regulation and Proangiotensin-12R01HL076248 · NHLBI · UNIV OF MED/DENT OF NJ-NJ MEDICAL SCHOOL · PI SAPRU, HREDAY N. · 2004 to 2013
$3.3M
NHLBI NIH HHS HL024347NHLBI NIH HHS HL076248NHLBI NIH HHS R01 HL024347NHLBI NIH HHS R01 HL076248
6 · The paper itself

Abstract

Experiments were done in urethane-anesthetized, barodenervated, male Wistar rats. Chemical stimulation of the hypothalamic paraventricular nucleus (PVN) by unilateral microinjections of N-methyl-D-aspartic acid (NMDA) elicited increases in mean arterial pressure (MAP) and greater splanchnic nerve activity (GSNA). The increases in the MAP and GSNA induced by chemical stimulation of the PVN were significantly exaggerated by bilateral microinjections of D(-)-2-amino-7-phosphono-heptanoic acid (D-AP7) and 2,3-dioxo-6-nitro-1,2,3,4-tetrahydro-benzo[f]quinoxaline-7-sulfonamide disodium (NBQX) (ionotropic glutamate receptor antagonists) into the medial subnucleus of the nucleus tractus solitarius (mNTS). These results were confirmed by single unit recordings; i.e. excitation of mNTS barosensitive neurons caused by chemical stimulation of the ipsilateral PVN was blocked by application of D-AP7 and NBQX to these neurons. Bilateral microinjections of D-AP7 and NBQX into the mNTS elicited pressor responses which were significantly attenuated by inhibition of PVN neurons by bilateral microinjections of muscimol. Unilateral microinjections of fluorogold into the mNTS resulted in bilateral retrograde labeling of the PVN neurons. Unilateral microinjections of biotinylated dextran amine into the PVN resulted in anterograde labeling of axons and terminals in the mNTS bilaterally and the labeled terminals exhibited vesicular glutamate transporter-2 immunoreactivity. These results indicated that 1) a tonically active glutamatergic bilateral projection from the PVN to the mNTS exists; 2) bilateral blockade of ionotropic glutamate receptors in the mNTS exaggerates the increases in MAP and GSNA, but not heart rate, to the chemical stimulation of the PVN; and 3) this projection may serve as a restraint mechanism for excitatory cardiovascular effects of PVN stimulation.

Indexed as

AnimalsBlood PressureCardiovascular SystemElectrophysiologyExcitatory Amino Acid AntagonistsGlutamic AcidHeart RateImmunohistochemistryMaleNeural PathwaysParaventricular Hypothalamic NucleusRatsRats, WistarReceptors, GlutamateSolitary NucleusSplanchnic NervesExcitatory Amino Acid AntagonistsGlutamic AcidReceptors, Glutamate

Identifiers

PMID18424005
PMCPMC2481515
OpenAlexW1991356720

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.