{"title":"Modification of skeletal muscle sarcoplasmic reticulum fatty acyl composition during arousal from hibernation","authors":"Daniel J. Pehowich","doi":"10.1016/0305-0491(94)90119-8","DOIUrl":null,"url":null,"abstract":"<div><p>The fatty acyl composition of sarcoplasmic reticulum was analyzed in skeletal muscle from hibernating and aroused Richardson's ground squirrels, <em>Spermophilus richardsonii</em>.</p><p>Total levels of monounsaturated fatty acyl groups increased in the phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylinositol (PI) fractions of aroused animals. Docosahexaenoic acid (22:6n-3) was lower in all phospholipids while the ratio <span><math><mtext>20:4</mtext><mtext>22:6</mtext></math></span> was higher in aroused animals.</p><p>These changes in fatty acyl composition have the potential to alter SR Ca<sup>2+</sup>-ATPase activity and Ca<sup>2+</sup> uptake efficiency during the energetically demanding arousal process.</p></div>","PeriodicalId":100294,"journal":{"name":"Comparative Biochemistry and Physiology Part B: Comparative Biochemistry","volume":"109 4","pages":"Pages 571-578"},"PeriodicalIF":0.0000,"publicationDate":"1994-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0305-0491(94)90119-8","citationCount":"10","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Comparative Biochemistry and Physiology Part B: Comparative Biochemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0305049194901198","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 10
Abstract
The fatty acyl composition of sarcoplasmic reticulum was analyzed in skeletal muscle from hibernating and aroused Richardson's ground squirrels, Spermophilus richardsonii.
Total levels of monounsaturated fatty acyl groups increased in the phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylinositol (PI) fractions of aroused animals. Docosahexaenoic acid (22:6n-3) was lower in all phospholipids while the ratio was higher in aroused animals.
These changes in fatty acyl composition have the potential to alter SR Ca2+-ATPase activity and Ca2+ uptake efficiency during the energetically demanding arousal process.
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