Heart innervation after ligation of the left anterior descending coronary artery (LAD)

Histochemistry
H TrautnerJ Metz

Abstract

Distribution and amount of neuropeptide Y- and synaptophysin-immunoreactive nervous structures within the heart were investigated in dogs 4 days after ligation of the left anterior descending coronary artery (LAD). In the right atrium and posterior left ventricular regions, which were taken as (non-infarcted) control areas, neuropeptide Y-immunoreactive paravascular nerves and a perivascular nerve plexus running within the adventitia of the coronary arteries and their branches down to the arterioles were observed. Morphometric measurements of the area density revealed 0.099 +/- 0.014% for synaptophysin- and 0.037 +/- 0.0072% for neuropeptide Y-immunoreactivity within the posterior wall of the left ventricular myocardium. Four days after ligation of the LAD only single synaptophysin- and neuropeptide Y-immunoreactive nerve fibers were very rarely detected in the infarcted region of the anterior wall of the left ventricle. Above the ligature larger than normal neuropeptide Y-immunoreactive axons within nerves along the LAD indicated a blockage of the axoplasmic transport of this peptide. When investigating this model of experimental myocardial infarction, mechanical traumatization of peri- and paravascular nerves of the LAD by th...Continue Reading

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Citations

Dec 15, 1994·Journal of the Autonomic Nervous System·S DolezelP Dobsák
May 26, 2015·European Journal of Pharmacology·Oleg E Osadchii

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