Background. Osteoporosis is a bone metabolic disease affecting a large percentage of aging population, which leads to an increased risk of fractures and has a negative impact on life quality. The available treatments for osteoporosis are effective, but are associated with several severe adverse reactions, hence the interest for alternative treatments devoid of such redoubtable side effects. Medicinal plants represent a viable resource for new therapeutic agents. The purpose of this review is to provide an overview about the medicinal plants that have been reported to have antiosteoporotic effects in human clinical studies. Materials and Methods. Relevant studies found in PubMed database, pertaining to efficacy in humans, mechanism of action, osteoactive phytochemicals and safety, were selected. For the inquiry, keywords such as "medicinal plant", "osteoporosis", "bone", "fracture", "osteoclast" and "osteoblast" were used in various combinations. The information extracted was integrated with the traditional knowledge on the correspondent medicinal plants. List of abbreviations: BMD-bone mineral density; CQ-Cissus quadrangularis; CR-Cimicifuga racemose; ESEleutherococcus senticosus; IGF-insulin like growth factor; OPG-osteoprotegerin; OVX-M -ovariectomized mice; OVX-R-ovariectomized rats; PC -Pueraria candollei; PL -Pueraria lobate; PN-Panax notoginseng; RANK-receptor activator of NF-kB; RANKL-receptor activator of NF-kB ligand; ROS -reactive oxygen species; Runx 2-runt related transcription factor 2; SM-Salvia milthiorriza
Results. Eight medicinal plants (Cimicifuga racemosa,
IntroductionOsteoporosis and osteopenia (low bone density) are bone metabolic diseases affecting a large percentage of aging population, increasing the risk of fractures and having a negative impact on quality of life patients. Risk factors for osteoporosis are: hormonal related risk factors (menopausal and andropausal hormonal disturbances, early menopause,
Article HistoryReceived: Jan. 5, 2017. Revised Received: Apr. 7, 2017. Accepted Apr. 12, 2017. Published Online: Nov. 15, 2017 103 hyperparathyroidism, hyperthyroidism), environmental related risk factors (e.g. dioxin-related compounds, heavy metals), nutrition-related risk factors (vitamin D, calcium deficiencies), lifestyle related risk factors (e.g. smoking, sedentarism), drugs (corticosteroids, anticonvulsants, aromatase inhibitors, gonadotropin-releasing hormone agonists), advanced age, female gender (Gonzalez-Macias et al., 2015;Paunescu et al., 2013;Rzymski et al., 2015).Osteoporosis is caused by disturbances of bone remodeling process. The bone tissue is undergoing permanent build-up by osteoblasts and breakdown by osteoclasts. A good dynamic balance between the osteoblastogenesis and osteoclastogenesis is the key for a bone matrix of a high quality. The disbalance occurs especially when the breakdown process overwhelms the building process, being triggered by the risk factors (Leung and Siu, 2013).There are several factors important for osteoblastogenesis, such as run...