The effects of propranolol on skeletal muscle contraction, lipid peroxidation products and antioxidant activity in experimental hyperthyroidism

Zaiton Zakaria, Z. Merican, B. A K Khalid, Jamaludin Mohamed, S. Baharom

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

1. 1. The mean levels of lipid peroxidation products, namely conjugated diene and malonaldehyde, were increased in the soleus muscles of hyperthyroid cats, while the mean glutathione peroxidase activity was decreased. No corresponding similar changes were noted in the fast extensor digitorum longus muscles and serum. 2. 2. Propranolol administration prevented the increase in conjugated diene level in the soleus muscles of hyperthyroid cat but not the malonaldehyde level. It also prevented the reduction in glutathione peroxidase activity in the slow oxidative soleus muscles of hyperthyroid cats. 3. 3. Maximal twitch tension, subtetanic tension and maximum tetanic tension of soleus and EDL muscles were reduced in hyperthyroid cats. Propranolol administration for 5 weeks to hyperthyroid cats did not prevent the reduction in tension of contractions of these muscles. 4. 4. It is suggested that lipid peroxidation might not be responsible for the myopathy in hyperthyroidism and propranolol administration does not improve skeletal muscle function in hyperthyroid animals.

Original languageEnglish
Pages (from-to)195-199
Number of pages5
JournalGeneral Pharmacology
Volume24
Issue number1
DOIs
Publication statusPublished - 1993

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Hyperthyroidism
Muscle Contraction
Propranolol
Lipid Peroxidation
Skeletal Muscle
Antioxidants
Cats
Glutathione Peroxidase
Malondialdehyde
Muscle Tonus
Muscular Diseases
Muscles
Serum

ASJC Scopus subject areas

  • Pharmacology

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The effects of propranolol on skeletal muscle contraction, lipid peroxidation products and antioxidant activity in experimental hyperthyroidism. / Zakaria, Zaiton; Merican, Z.; Khalid, B. A K; Mohamed, Jamaludin; Baharom, S.

In: General Pharmacology, Vol. 24, No. 1, 1993, p. 195-199.

Research output: Contribution to journalArticle

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