Effect of Anti-osteoporotic Medications on Nonalcoholic Fatty Liver Disease

Summary

Nonalcoholic fatty liver disease (NAFLD) is a chronic, metabolic liver disease that is closely related to obesity, type 2 diabetes mellitus (T2DM) and metabolic syndrome (MetS) in a bidirectional mode. NAFLD affects approximately 25% of the worldwide population. NAFLD refers to a phenotypic spectrum, including steatosis, inflammation and fibrosis, which can lead to cirrhosis and hepatocellular carcinoma in a minority of patients. However, despite its high prevalence, morbidity and mortality, as well as the extensive research in the field, there is not to-date a licensed medication specifically for NAFLD. Emerging evidence supports a potential association between NAFLD and osteoporosis; the prevalence of osteoporosis is probably higher in patients with NAFLD and, vise versa, the prevalence of NAFLD may be higher in patients with osteoporosis. In this context, it has been proposed that certain medications for osteoporosis may also prove to be beneficial to NAFLD. Denosumab, a human monoclonal IgG2 antibody against the receptor activator of nuclear factor kappa-B (NF-κB) ligand (RANKL), is currently an established treatment for osteoporosis and other metabolic bone diseases. The axis RANKL-receptor activator of nuclear factor NF-κB (RANK)-osteoprotegerin (OPG) has been demonstrated as a key regulator of bone metabolism and, when dysregulated, it contributes to the pathogenesis of osteoporosis and other metabolic bone diseases. Interestingly, experimental studies have shown that circulating and hepatic RANKL may be upregulated in mice with diet-induced NAFLD, rendering RANKL a potential contributor to the pathogenesis of NAFLD, and ideally, a promising pharmacological target. On the other hand, bisphosphonates, another established, first-line treatment for osteoporosis, are expected to have no significant effect on hepatic metabolism in patients with NAFLD due to their pharmacokinetics and mechanism of action. This is a prospective non-randomized study which aims to investigate the comparative effect of denosumab versus bisphosphonates on hepatic steatosis and fibrosis in women with postmenopausal osteoporosis and concomitant NAFLD.

Timeline

Start

2022-12-23

Primary completion

2026-07

Completion

2026-09

Publications

• Background Makri E, Goulas A, Polyzos SA. Epidemiology, Pathogenesis, Diagnosis and Emerging Treatment of Nonalcoholic Fatty Liver Disease. Arch Med Res. 2021 Jan;52(1):25-37. doi: 10.1016/j.arcmed.2020.11.010. Epub 2020 Dec 14.
• Background Polyzos SA, Goulas A. Treatment of nonalcoholic fatty liver disease with an anti-osteoporotic medication: A hypothesis on drug repurposing. Med Hypotheses. 2021 Jan;146:110379. doi: 10.1016/j.mehy.2020.110379. Epub 2020 Nov 7.
• Background Filip R, Radzki RP, Bienko M. Novel insights into the relationship between nonalcoholic fatty liver disease and osteoporosis. Clin Interv Aging. 2018 Oct 4;13:1879-1891. doi: 10.2147/CIA.S170533. eCollection 2018.
• Background Anastasilakis AD, Polyzos SA, Makras P. THERAPY OF ENDOCRINE DISEASE: Denosumab vs bisphosphonates for the treatment of postmenopausal osteoporosis. Eur J Endocrinol. 2018 Jul;179(1):R31-R45. doi: 10.1530/EJE-18-0056. Epub 2018 Apr 24.
• Background Zhong L, Yuan J, Huang L, Li S, Deng L. RANKL Is Involved in Runx2-Triggered Hepatic Infiltration of Macrophages in Mice with NAFLD Induced by a High-Fat Diet. Biomed Res Int. 2020 May 25;2020:6953421. doi: 10.1155/2020/6953421. eCollection 2020.
• Background Rinotas V, Niti A, Dacquin R, Bonnet N, Stolina M, Han CY, Kostenuik P, Jurdic P, Ferrari S, Douni E. Novel genetic models of osteoporosis by overexpression of human RANKL in transgenic mice. J Bone Miner Res. 2014;29(5):1158-69. doi: 10.1002/jbmr.2112.
• Background Vachliotis ID, Anastasilakis AD, Goulas A, Goulis DG, Polyzos SA. Nonalcoholic fatty liver disease and osteoporosis: A potential association with therapeutic implications. Diabetes Obes Metab. 2022 Sep;24(9):1702-1720. doi: 10.1111/dom.14774. Epub 2022 Jun 14.

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