ELECTROPHYSIOLOGICAL PROPERTIES OF PAPILLARY-MUSCLE FIBERS FROM EUTHYROID AND HYPOTHYROID CHICK

Authors
DIMEO S ROSAROLL PD PIRO MC DELEO T
Citation
S. Dimeo et al., ELECTROPHYSIOLOGICAL PROPERTIES OF PAPILLARY-MUSCLE FIBERS FROM EUTHYROID AND HYPOTHYROID CHICK, Comparative biochemistry and physiology. Part A, Physiology, 105(4), 1993, pp. 719-724
Citations number
31
Categorie Soggetti
Physiology,Biology
Journal title
Comparative biochemistry and physiology. Part A, Physiology → ACNP
ISSN journal
10964940
Volume
105
Issue
4
Year of publication
1993
Pages
719 - 724
Database
ISI
SICI code
1096-4940(1993)105:4<719:EPOPFF>2.0.ZU;2-G
Abstract
1. PTU treatment-induced hypothyroidism is associated with a significa nt decrease in the chick heart rate. 2. Hypothyroidism produces a slow onset of bradycardia, indicating a late effect of thyroid hormone dec rease. 3. After 15 days treatment, an increase of action potential dur ation, similar to that reported for several mammal species, has been f ound. 4. Action potential duration is frequency and temperature depend ent, but it has been found to be significantly different in the euthyr oid and hypothyroid chicks.