17 September 2014 : Original article
Med Sci Monit Basic Res 2014; 20:142-145
BACKGROUND: Sirtuin 1 (SIRT1) is a class III histone deacetylase that may play a critical role in several biological functions, including lifespan, stress, and inflammation. Our main objective was to evaluate SIRT1 activity in peripheral blood mononuclear cells (PBMCs) in patients with osteoporosis and to analyze the relationship between the SIRT 1 activity and markers of inflammation and bone remodelling.
MATERIAL AND METHODS: We performed a prospective monocentric study of patients with osteoporosis and measured the nuclear and cytoplasmic activities of SIRT1 in PBMCs. Levels of proinflammatory cytokines were assessed in culture supernatants of PBMCs isolated from the osteoporosis patients. The level of serum C-terminal cross-linking telopeptide of type I collagen (CTX), a marker of bone resorption, was measured in the serum of osteoporosis patients.
RESULTS: Sixteen women with osteoporosis were included. A statistically significant correlation between the cytoplasmic and nuclear SIRT 1 activities was found in PBMCs of patients with osteoporosis. Although non-significant, we observed a negative trend between nuclear SIRT 1 activity and the rate of serum CTX and a positive trend between IL-6 and CTX levels in patients with osteoporosis.
CONCLUSIONS: This study shows that the cytoplasmic and nuclear SIRT 1 activities are measurable in circulating PBMCs of patients with osteoporosis and that these 2 activities are correlated. The potential role of inflammation in bone resorption in patients with osteoporosis was also studied.
Keywords: Case-Control Studies, Cell Nucleus - metabolism, Collagen Type I - blood, Interleukin-6 - blood, Leukocytes, Mononuclear - enzymology, Osteoporosis - enzymology, Peptides - blood, Sirtuin 1 - blood
Most Viewed Current Articles
05 Jan 2021 : Review articleA Southeast Asian Perspective on the COVID-19 Pandemic: Hemoglobin E (HbE)-Trait Confers Resistance Against...
Med Sci Monit Basic Res 2021; 27:e929207
05 May 2022 : Laboratory ResearchCalcitriol Inhibits Proliferation and Potentially Induces Apoptosis in B16-F10 Cells
Med Sci Monit Basic Res 2022; 28:e935139
09 Jun 2021 : Laboratory ResearchVitamin D Inhibits Lipopolysaccharide (LPS)-Induced Inflammation in A549 Cells by Downregulating Inflammato...
Med Sci Monit Basic Res 2021; 27:e931481
07 Jul 2022 : Laboratory ResearchCytotoxicity, Apoptosis, Migration Inhibition, and Autophagy-Induced by Crude Ricin from Ricinus communis S...
Med Sci Monit Basic Res 2022; 28:e936683