Substance P Receptor in the Rat Heart and Regulation of Its Expression in Long-Term Diabetes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11140%2F18%3A10377146" target="_blank" >RIV/00216208:11140/18:10377146 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3389/fphys.2018.00918" target="_blank" >https://doi.org/10.3389/fphys.2018.00918</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3389/fphys.2018.00918" target="_blank" >10.3389/fphys.2018.00918</a>
Alternative languages
Result language
angličtina
Original language name
Substance P Receptor in the Rat Heart and Regulation of Its Expression in Long-Term Diabetes
Original language description
Substance P (SP) is a neuropeptide engaged in the signal transmission of neural C fibers afferents in the myocardium. The actions of SP in the heart are extensive and they are mediated by the neurokinin 1 receptor (NK1R), a member of the tachykinin subfamily of G-protein coupled receptors. The receptors have been found in the heart, but to our knowledge, their exact localization in the heart has not been described yet. Here, we investigated the presence of NK1R protein in separate rat heart compartments by means of western blot and its tissue distribution by means of immunofluorescence. Specificity of NK1R immunolabeling was controlled by preabsorption of the antiserum with its corresponding peptide. Additionally, we investigated abundance of gene for NK1R in separated heart chambers by means of quantitative real-time PCR (RT-PCR). Relative abundance of NK1R mRNA was expressed as a ratio of target gene Cq value to Cq value of control gene - beta-actin. Finally, we studied abundance of NK1R mRNA in different cell types of heart isolated by laser capture microdissection. Immunofluorescence showed NK1R immunoreactivity on the surface of some intracardiac neurons and smooth muscle cells of coronary vessels. The results of quantitative RT-PCR indicate abundance of mRNA for NK1R in all heart chambers with highest level in the left atrium. The presence of NK1R mRNA was detected in some samples of dissected intracardiac neurons, but not in cardiomyocytes or smooth muscle cells of coronary vessels. In the course of long-term diabetes, a significant downregulation of the NK1R mRNA was seen in the right atrium and upregulation in the right ventricle 53 weeks after the induction of diabetes. Our results indicate localization of NK1R in some intracardiac neurons and smooth muscle cells. Impaired transcription of the NK1R gene in the diabetic heart may be induced by unidentified genes or factors involved in the development of diabetic cardiomyopathy.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
30105 - Physiology (including cytology)
Result continuities
Project
<a href="/en/project/LO1503" target="_blank" >LO1503: BIOMEDIC</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Frontiers in Physiology
ISSN
1664-042X
e-ISSN
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Volume of the periodical
9
Issue of the periodical within the volume
July
Country of publishing house
CH - SWITZERLAND
Number of pages
12
Pages from-to
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UT code for WoS article
000438540500001
EID of the result in the Scopus database
2-s2.0-85049827341