EurekaMag.com logo
+ Site Statistics
References:
48,253,228
Abstracts:
22,798,842
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Evidence of nonuniform sympathetic neural activity to heart regions in guinea pigs


, : Evidence of nonuniform sympathetic neural activity to heart regions in guinea pigs. American Journal of Physiology 237(5): H606-H611

Central neutral activity may selectively influence cardiac regions. As an index of this, rate constants of norepinephrine turnover, KNE, in regions of guinea pig heart were determined by 1) disappearance of [3H]NE from tissues, and 2) conversion of [3H]tyrosine to [3H]NE. In sinoatrial (SA) node and right atrial appendage, KNE averaged 0.084 +/- 0.014 and 0.066 +/- 0.004 (SE) h-1, respectively (P greater than 0.05). In other specialized regions, KNE was lower than in SA node (P less than 0.05). In other contractile regions, KNE was lower than in right atrial appendage (P less than 0.05). Ganglionic blockade reduced KNE to uniform values in all heart regions. Cold stress increased KNE markedly (P less than 0.05) throughout the heart, but selectively more in SA node, AV node, proximal conduction bundles, and right atrial appendage (P less than 0.05). At room temperature, neural activity is greater to the right atrium including SA node than to other cardiac regions. At 4 degrees C, neural activity increases selectively in the right atrium and the conduction system. This suggests that central neural mechanisms contribute significantly to nonuniform cardiac regulation under conditions of progressive sympathetic activation.

(PDF 0-2 workdays service)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 005411612

PMID: 495767

PDF Full Text: Submit


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Shu, Hung Yu; Lin, Guang Huey; Chen, I.Ling; Hsieh, Jwo Chuan; Liu, Shih Tung, 1996: Cloning and sequencing of malonyl-CoA transacylase in Bacillus subtilis F29-3. Abstracts of the General Meeting of the American Society for Microbiology 96(0): 503

Maule, A. G.; Shaw, C.; Halton, D. W.; Brennan, G. P.; Johnston, C. F.; Moore, S., 1992: Neuropeptide F Localization and characterization using specific antisera. Immunocytochemical techniques used in conjunction with confocal scanning laser microscopy (CSLM) and electron microscopy have been used to demonstrate, for the first time, the distribution of the parasitic platyhelminth neuropeptide, neuropeptide...

Dominguez, Carmen; Plumet, Joaquin; Gaset, Antoine; Rigal, Luc, 1992: Study of the conditions of the Claisen-Schmidt condensation reaction of furylmethylacetone with 2,5-furandicarboxaldehyde. The Claisen-Schmidt reaction of 2,5-furandicarboxaldehyde (FDC) with 2-acetylfuran allows for the synthesis of three products as a function of the reaction conditions. The main effects of five factors and their interaction effects on seven respons...

Gomez Campoy M.E.; Albacete Garcia C.R.; Martinez Pallares M.A., 1992: Hygienic sanitary control of arrope y calabazate fruit syrups. A study been done in 90 samples of "arrope y calabazete" during four years. None of these samples were contaminated with pathogens such as Salmonella. Several samples were contaminated with molds and enterobacteriaceas, and the 50% of th...

King A.J.; Anderson S.; Neuringer J.R.; Troy J.L.; Brenner B.M., 1990: Endogenous nitric oxide and the vascular reply to volume mediated hypertension in the rat. Clinical Research 38(2): 234A

Vokes, E. H., 1963: A possible Hindu influence at Teotihuacan. American Antiquity, 29(1): 94-95

Azuma M.; Kasai Y.; Tamatani T.; Sato M., 1992: Involvement of p53 mutation in the development of human salivary gland pleomorphic adenomas. We examined the status of the p53 mutation, a putative tumor suppressor gene, as well as the expressions of myc and mos oncogene products in human salivary gland pleomorphic adenoma cells in culture derived from four individuals using techniques w...

Chauvin, C.; Le Bouar, G., 2006: Occupational injury in the French sea fishing industry: a comparative study between the 1980s and today. This study aims at comparing two data bases related to occupational injuries in the French sea fishing industry: a data base created between 1977 and 1980, a data base created between 1996 and 2001. These bases were made from report forms filled o...

Schuijs, M.J.; Willart, M.A.; Hammad, H.; Lambrecht, B.N., 2014: Cytokine targets in airway inflammation. Asthma is an inflammatory disease of the airway wall that leads to bronchial hyper-reactivity and airway obstruction, caused by inflammation, mucus hyper-production and airway wall remodelling. Central to pathogenesis, Th2 and Th17 lymphocytes of...

Jouzier, X.; Veisseyre, R., 1978: A modern theory of education for the training of executive staff in the dairy industry. Training courses provided by the Institute for Advanced Studies in the Dairy Industry and Economy (Institute d'Etudes Superieures d'Industrie et d'Economie Laitieres) are described. In a programme lasting 13 months staff adapted to...