Evidence map›Paper›PMID 11752397›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2002

Decreased intracellular calcium mediates the histamine H3-receptor-induced attenuation of norepinephrine exocytosis from cardiac sympathetic nerve endings.

Randi B Silver, Kumar S Poonwasi, Nahid Seyedi, Sandy J Wilson, Timothy W Lovenberg, Roberto Levi

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

21 citing papers in PubMed, 73 citations in OpenAlex.

  1. Article
  2. Histamine receptors in heart failure.Heart failure reviews · 2022
    Review
  3. Histamine and Microglia.Current topics in behavioral neurosciences · 2022
    Review
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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

6 authors at 2 institutions in 1 country.

Randi B SilverDepartment of Physiology-Biophysics, Cornell University, Weill Medical College, 1300 York Avenue, New York, NY 10021, USA.
Kumar S Poonwasi
Nahid Seyedi
Sandy J Wilson
Timothy W Lovenberg
Roberto Levi
Cornell University · USUniversity of California, Los Angeles · US

Funding

Vascular signaling via scavenger receptorsP01HL046403 · NHLBI · WEILL MEDICAL COLL OF CORNELL UNIV · PI HAJJAR, KATHERINE AMBERSON · 1991 to 2011
$26.7M
Histamine Receptor/Norepinephrine in Cardiac DysfunctionR01HL034215 · NHLBI · WEILL MEDICAL COLL OF CORNELL UNIV · PI LEVI, ROBERTO · 1985 to 2013
$6.6M
REGULATION OF RENAL H+/K+ EXCHANGER29DK045828 · NIDDK · WEILL MEDICAL COLLEGE OF CORNELL UNIV · PI SILVER, RANDI BETH · 1993 to 1997
–
NHLBI NIH HHS HL 34215NHLBI NIH HHS HL46403NHLBI NIH HHS P01 HL046403NHLBI NIH HHS R01 HL034215NIDDK NIH HHS DK45828
6 · The paper itself

Abstract

Activation of presynatic histamine H(3) receptors (H(3)R) down-regulates norepinephrine exocytosis from cardiac sympathetic nerve terminals, in both normal and ischemic conditions. Analogous to the effects of alpha(2)-adrenoceptors, which also act prejunctionally to inhibit norepinephrine release, H(3)R-mediated antiexocytotic effects could result from a decreased Ca(2+) influx into nerve endings. We tested this hypothesis in sympathetic nerve terminals isolated from guinea pig heart (cardiac synaptosomes) and in a model human neuronal cell line (SH-SY5Y), which we stably transfected with human H(3)R cDNA (SH-SY5Y-H(3)). We found that reducing Ca(2+) influx in response to membrane depolarization by inhibiting N-type Ca(2+) channels with omega-conotoxin (omega-CTX) greatly attenuated the exocytosis of [(3)H]norepinephrine from both SH-SY5Y and SH-SY5Y-H(3) cells, as well as the exocytosis of endogenous norepinephrine from cardiac synaptosomes. Similar to omega-CTX, activation of H(3)R with the selective H(3)R-agonist imetit also reduced both the rise in intracellular Ca(2+) concentration (Ca(i)) and norepinephrine exocytosis in response to membrane depolarization. The selective H(3)R antagonist thioperamide prevented this effect of imetit. In the parent SH-SY5Y cells lacking H(3)R, imetit affected neither the rise in Ca(i) nor [(3)H]norepinephrine exocytosis, demonstrating that the presence of H(3)R is a prerequisite for a decrease in Ca(i) in response to imetit and that H(3)R activation modulates norepinephrine exocytosis by limiting the magnitude of the increase in Ca(i). Inasmuch as excessive norepinephrine exocytosis is a leading cause of cardiac dysfunction and arrhythmias during acute myocardial ischemia, attenuation of norepinephrine release by H(3)R agonists may offer a novel therapeutic approach to this condition.

Indexed as

ExocytosisAnimalsCalciumCalcium Channel BlockersCell LineDose-Response Relationship, DrugGuinea PigsHistamine AgonistsHumansImidazolesMaleMyocardial IschemiaMyocardiumNeuroblastomaNeuronsNorepinephrineCalciumCalcium Channel BlockersHistamine AgonistsimetitImidazolesNorepinephrineomega-ConotoxinsPotassiumReceptors, Histamine H3Thiourea

Identifiers

PMID11752397
PMCPMC117589
OpenAlexW2020915210

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.