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Kynurenic Acid Inhibits the Electrical Stimulation Induced Elevated Pituitary Adenylate Cyclase-Activating Polypeptide Expression in the TNC

Overview of attention for article published in Frontiers in Neurology, January 2018
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Title
Kynurenic Acid Inhibits the Electrical Stimulation Induced Elevated Pituitary Adenylate Cyclase-Activating Polypeptide Expression in the TNC
Published in
Frontiers in Neurology, January 2018
DOI 10.3389/fneur.2017.00745
Pubmed ID
Authors

Tamás Körtési, Bernadett Tuka, János Tajti, Teréz Bagoly, Ferenc Fülöp, Zsuzsanna Helyes, László Vécsei

Abstract

Migraine is a primary headache of imprecisely known mechanism, but activation of the trigeminovascular system (TS) appears to be essential during the attack. Intensive research has recently focused on pituitary adenylate cyclase-activating polypeptide (PACAP) and the kynurenine systems as potential pathogenic factors. We investigated the link between these important mediators and the effects of kynurenic acid (KYNA) and its synthetic analog (KYNA-a) on PACAP expression in the rat trigeminal nucleus caudalis (TNC) in a TS stimulation model related to migraine mechanisms. Adult male Sprague-Dawley rats were pretreated with KYNA, KYNA-a, the NMDA receptor antagonist MK-801, or saline (vehicle). Next, the trigeminal ganglion (TRG) was electrically stimulated, the animals were transcardially perfused following 180 min, and the TNC was removed. In the TNC samples, 38 amino acid form of PACAP (PACAP1-38)-like radioimmunoactivity was measured by radioimmunoassay, the relative optical density of preproPACAP was assessed by Western blot analysis, and PACAP1-38 mRNA was detected by real-time PCR. Electrical TRG stimulation resulted in significant increases of PACAP1-38-LI, preproPACAP, and PACAP1-38 mRNA in the TNC. These increases were prevented by the pretreatments with KYNA, KYNA-a, and MK-801. This is the first study to provide evidence for a direct link between PACAP and the kynurenine system during TS activation.

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Geographical breakdown

Country Count As %
Unknown 20 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 5 25%
Student > Bachelor 3 15%
Student > Ph. D. Student 3 15%
Professor 2 10%
Other 1 5%
Other 0 0%
Unknown 6 30%
Readers by discipline Count As %
Medicine and Dentistry 5 25%
Neuroscience 3 15%
Agricultural and Biological Sciences 1 5%
Biochemistry, Genetics and Molecular Biology 1 5%
Chemistry 1 5%
Other 1 5%
Unknown 8 40%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 04 January 2022.
All research outputs
#20,744,283
of 25,483,400 outputs
Outputs from Frontiers in Neurology
#9,276
of 14,668 outputs
Outputs of similar age
#345,930
of 452,197 outputs
Outputs of similar age from Frontiers in Neurology
#144
of 221 outputs
Altmetric has tracked 25,483,400 research outputs across all sources so far. This one is in the 10th percentile – i.e., 10% of other outputs scored the same or lower than it.
So far Altmetric has tracked 14,668 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 7.5. This one is in the 27th percentile – i.e., 27% of its peers scored the same or lower than it.
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