Mechanisms by which electroacupuncture ‑mediated histone acetylation mitigates bone loss in rats with ovariectomy‑induced osteoporosis.

Mechanisms by which electroacupuncture‑mediated histone acetylation mitigates bone loss in rats with ovariectomy‑induced osteoporosis. Mol Med Rep. 2020 Aug 12;: Authors: Shu Q, Shao Y, Liu R, Hu Y, Peng Z, Tian J Abstract The aim of the present study was to investigate the effectiveness of electroacupuncture (EA) on ovariectomy‑induced osteoporotic rats to elucidate potential mechanisms by which EA regulates acetylation of histones in caput femoris. A total of 40 female Sprague‑Dawley rats were randomly allocated into four groups: Sham operation, ovariectomy‑induced osteoporosis (OVX), EA and 17β‑estradiol (E2) treatments. After 8 weeks of intervention, the trabecular morphology of each group was measured by micro‑computed tomography. Biomarkers of bone metabolism in serum were detected. The protein expression of histone deacetylase 2 (HDAC2), histone H3, Ac‑histone H3 and downstream cytokines involved in osteoblast and osteoclast differentiation were detected. The results showed that EA and E2 both prevented bone loss and improved trabecular morphology in OVX rats. EA was found to suppress the protein expression of HDAC2 and promoted the acetylation of histone H3 compared with the OVX model group. The results indicated that EA promoted the differentiation of osteoblasts, and suppressed that of osteoclasts, thereby improving the trabecular morphology. E2 was shown to regulate the expression of runt‑relate...
Source: Molecular Medicine Reports - Category: Molecular Biology Tags: Mol Med Rep Source Type: research