Expression of aromatase and synthesis of sex steroid hormones in skeletal muscle following exercise training in ovariectomized rats

Rengfei Shi, Xiangyang Tian, Yu Feng, Zepeng Cheng, Jianqiang Lu, Darrell W Brann, Quanguang Zhang

Research output: Contribution to journalArticle

Abstract

Age-related muscle wasting (sarcopenia) is accompanied by a decrease in estrogen levels which can compromise the health of aging women. Recent studies have shown that the key enzyme of estrogen synthesis (aromatase) is detected in the skeletal muscle. The purpose of this study was to investigate the effects of exercise on the expression of aromatase and the synthesis of sex steroid hormones in skeletal muscle following exercise training. Ovariectomized rats were divided into two groups, treadmill running group (25 m/min, 60 min/day, 6 days/week) and sedentary group. We found that in ovariectomized rats, exercise training significantly increased the soleus and plantar muscles mass. The level of aromatase expression and 17-β-estradiol (E2) were increased significantly in skeletal muscle following exercise training. In addition, activation of the down-stream Akt-FoxO1-MyoD signaling pathway was significantly increased in both soleus and plantaris muscles following exercise. These results demonstrate that exercise training increased the expression of aromatase and local estrogen production in skeletal muscle, which potentially influences skeletal muscle in ovariectomized rats through activation of the Akt-FoxO1-MyoD signaling pathway.

Original languageEnglish (US)
Pages (from-to)91-96
Number of pages6
JournalSteroids
Volume143
DOIs
StatePublished - Mar 1 2019

Fingerprint

Aromatase
Gonadal Steroid Hormones
Muscle
Rats
Skeletal Muscle
Exercise
Estrogens
Chemical activation
Sarcopenia
Exercise equipment
Women's Health
Running
Estradiol
Aging of materials
Health
Muscles
Enzymes

Keywords

  • Aromatase
  • Exercise
  • Ovariectomy
  • Rat
  • Skeletal muscle

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Endocrinology
  • Pharmacology
  • Clinical Biochemistry
  • Organic Chemistry

Cite this

Expression of aromatase and synthesis of sex steroid hormones in skeletal muscle following exercise training in ovariectomized rats. / Shi, Rengfei; Tian, Xiangyang; Feng, Yu; Cheng, Zepeng; Lu, Jianqiang; Brann, Darrell W; Zhang, Quanguang.

In: Steroids, Vol. 143, 01.03.2019, p. 91-96.

Research output: Contribution to journalArticle

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