alexa Contraction and cation contents of skeletal soleus and EDL muscles in age-matched control and diabetic rats.
Pharmaceutical Sciences

Pharmaceutical Sciences

Biochemistry & Pharmacology: Open Access

Author(s): Chonkar A, Hopkin R, Adeghate E, Singh J

Abstract Share this page

Abstract Skeletal muscle atrophy and neuropathy are two of the major long-term complications of diabetes mellitus (DM). This article investigates the effect of streptozotocin (STZ)-induced type 1 DM on contraction and cation contents in soleus and EDL muscles compared to age-matched control rats. Adult Wistar rats were humanely killed and the soleus and EDL muscles located and excised rapidly and placed in organ baths. The muscles were electrically stimulated (EFS, 50 V, 1 ms, 1-50 Hz) and isometric contraction monitored using a chart recorder. At the end of the experiments the muscles were blotted, weighed, and dissolved in concentrated nitric acid for the measurements of cation contents. Diabetic rats have significantly (P < 0.05) reduced body and muscle weights and significantly (P < 0.05) elevated blood glucose (29.65 +/- 0.33 mM, n = 10) compared to control (6.06 +/- 0.21 mM, n = 10). EFS evoked frequency dependent contraction in both soleus and EDL muscles of healthy control rats. The response was significantly (P < 0.05, n = 8) increased in EDL compared to soleus. In the diabetic soleus and EDL muscles the force of contraction was significantly (P < 0.05, n = 8) reduced in both muscle types compared to control. The levels of total sodium (Na+), potassium (K+), calcium (Ca2+), magnesium (Mg2+), zinc (Zn2+), copper (Cu2+), and iron (Fe2+) were significantly (P < 0.05) reduced in diabetic soleus and EDL muscles compared to control. The results indicate that STZ-induced skeletal muscle atrophy is associated with marked reductions in both the force of contraction and cation contents in EDL and soleus muscles of the rat. This article was published in Ann N Y Acad Sci and referenced in Biochemistry & Pharmacology: Open Access

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords