Size of Porcine Motor End-Plates Determined by Acetyl-Cholinesterase Staining

Beermann, D. H.; Cassens, R. G.; Moen, T.

doi:10.1267/ahc.10.38

Cited by 1 publication

(1 citation statement)

References 11 publications

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“…The ratio between mean end plate diameter and mean muscle fiber diameter was 1 : 1.6 and 1 : 1.7 in the red and white part of the peronaeus muscle of Poland-China pigs, respectively. In the gastrocnemius muscles of the young pigs studied here, MEP sizes were smaller when related to muscle fiber diameter, measuring in length only 50-70% of the muscle fiber diameter (Table3), which is within the same range BEERMANN et al (1977) have found in the pig semitendinosus muscle. Grouping of porcine MEP's into three classes was simple when based on structural characteristics described on different fiber types in rat muscle.…”

Section: Nerve Conduction Veloaty (Ncv)supporting

confidence: 80%

Neuromuscular Transmission in the Gastrocnemius Muscle of Young Domestic and Wild Pigs

Szentkuti¹,

Schlegel²,

Sallai³

1990

Journal of Veterinary Medicine Series A

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The gastrocnemius muscle was stimulated in situ in young female domestic pigs (DP, Sus suofa domestica, German Landrace; n = 24) and in European wild pigs (WP, Sus scrofa suofu; n = 20), by short (0.1 ms) square-wave impulses via the sciatic nerve. Evoked compound action potentials were recorded from the sciatic nerve, from the Ramus muscularis distalis of the tibial nerve and from the end plate region of the muscle tissue. Maximum nerve conduction velocities (NCV) were 58.8 f 10.4m/s in DP and 77.7 f 16.5 m/s in WP. Time of neuro-muscular transmission ("distal latency") for evoked compound action potentials from the Ramus gastrocnemius of the tibial nerve into the gastrocnemius muscle was 2.32 f 0.54 ms in DP and only 1.27 f 0.25 ms in WP. Electromechanical coupling time intervals in the gastrocnemius muscle were 11.95 k 2.26 ms in DP and 9.95 k 1.07 ms in WP.Motor end plates were visualized histochemically and classified as of the red, intermediate and white type according to their shape and arborization. High extrajunctional acetylcholinesterase activity was observed in the close vicinity of the junctions of muscles in young DP (3.5 month, 40 kg), which was absent in WP muscles and also in DP muscle at older age.

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Section: Nerve Conduction Veloaty (Ncv)supporting

confidence: 80%