| Literature DB >> 6692924 |
G S Butler-Browne, D Herlicoviez, R G Whalen.
Abstract
Hypothyroidism was induced in young rats by methylthiouracil treatment of pregnant mothers from 18 days of gestation to 4 weeks after birth. Electrophoretic analysis of native myosin isozymes revealed a persistence of neonatal and embryonic myosin in developing fast and slow muscles up to at least 28 days after birth. The appearance of adult fast myosin was inhibited in 28-day old animals, however adult slow myosin was found in the soleus muscle. Immunocytochemical results on the soleus demonstrate a cellular heterogeneity in the response to hypothyroidism. About half fibers have a normal complement of slow myosin and do not contain neonatal myosin. Only the remaining fibers contain the large amounts of neonatal myosin demonstrated by electrophoresis.Entities:
Mesh:
Substances:
Year: 1984 PMID: 6692924 DOI: 10.1016/0014-5793(84)80047-2
Source DB: PubMed Journal: FEBS Lett ISSN: 0014-5793 Impact factor: 4.124