astaxanthine and Osteoporosis

The aim of this study was to test mf Odondovis Calcium® as a food supplement in a 3-month product evaluation study measuring how the low jaw bone density, could be improved. The upper jaw density was tested with an ultrasound method, evaluating the grey scale median of the images (GSM).. Seventy nine subjects were enrolled; 22 normal subjects (group A) and 57 with upper jaw osteoporosis (according to DEXA values). Patients were divided into 2 groups (group B and C, respectively 28 and 29 cases). These subjects were treated with what was considered the' best treatment' and in the group B only was added mf Odontovis Calcium®, consisting of calcium salts, Vitamin D and physiological modulators with antioxidant activity. This treatment continued for 3 months.. The GSM of osteoporotic patients was significantly lower in comparison with GSM in normal subjects. No changes were observed (between the inclusion and 3 month values) in normal subjects and minimal, non-significant changes were observed in control osteoporosis patients. Before-after treatment values of GSM in treatment patients showed a significant increase (P<0.022) at 3 months. The increase in GSM in these patients was significantly higher (P<0.05) in comparison with control patient with osteoporosis. The Tolerability of the product was very good and the compliance corresponded to 98%.. the jaw density in patients with osteoporosis is increased in only 3 months with supplementation with mf Odontovis Calcium®. Long-term clinical implications should be observed in more prolonged studies.

Topics: Adult; Antioxidants; Bone Density; Calcium, Dietary; Carotenoids; Dietary Supplements; Female; Flavonoids; Humans; Jaw Diseases; Lycopene; Male; Middle Aged; Osteoporosis; Ultrasonography; Vitamin D; Xanthophylls

Radiation therapy (RT) is a crucial part of many treatment plans for cancer patients. However, major undesired side effects are associated with this treatment, including impaired bone remodeling and bone loss. Irradiation induces bone loss due to promoted osteoclastic bone resorption and reduced osteoblastic bone formation. Astaxanthin (AST) is a natural antioxidant with anti-oxidative and anti-aging properties. However, it is unclear whether AST is also protective against osteoporosis induced by ionizing radiation (IR). Here, we evaluate the efficacy of AST in mitigating IR-induced bone loss in a mouse model where both hindlimbs received radiation. Reduced BMD, bone biomechanical strength, bone formation, elevated oxidative stress, and osteoclast activity with microarchitectural deterioration of trabecular and cortical bones were observed in IR mice. Supplementation with AST corrected these osteoporotic phenotypes, caused by IR, by inhibiting oxidative stress, DNA damage, osteocyte senescence, and senescence-associated secretory phenotype (SASP), subsequently promoting osteoblastic bone formation and inhibiting osteoclastic bone resorption. The results from our study provide experimental evidence for the clinical use of AST to prevent IR-induced osteoporosis in cancer patients.

Topics: Animals; Antioxidants; Bone Resorption; Cellular Senescence; Mice; Osteocytes; Osteoporosis; Oxidative Stress

Osteoporosis is characterized by a reduction of the bone mineral density (BMD) and microarchitectural deterioration of the bone, which lead to bone fragility and susceptibility to fracture. Astaxanthin (AST) has a variety of biological activities, such as a protective effect against asthma or neuroinflammation, antioxidant effect, and decrease of the osteoclast number in the right mandibles in the periodontitis model. Although treatment with AST is known to have an effect on inflammation, no studies on the effect of AST exposure on bone loss have been performed. Thus, in the present study, we examined the antiosteoporotic effect of AST on bone mass in ovariectomized (OVX) mice and its possible mechanism of action. The administration of AST (5, 10 mg/kg) for 6 weeks suppressed the enhancement of serum calcium, inorganic phosphorus, alkaline phosphatase, total cholesterol, and tartrate-resistant acid phosphatase (TRAP) activity. The bone mineral density (BMD) and bone microarchitecture of the trabecular bone in the tibia and femur were recovered by AST exposure. Moreover, in the in vitro experiment, we demonstrated that AST inhibits osteoclast formation through the expression of the nuclear factor of activated T cells (NFAT) c1, dendritic cell-specific transmembrane protein (DC-STAMP), TRAP, and cathepsin K without any cytotoxic effects on bone marrow-derived macrophages (BMMs). Therefore, we suggest that AST may have therapeutic potential for the treatment of postmenopausal osteoporosis.

Topics: Animals; Biomarkers; Body Weight; Bone Density; Bone Marrow Cells; Bone Resorption; Cell Differentiation; Female; Femur; Gene Expression Regulation; Macrophages; Male; Mice, Inbred ICR; Organ Size; Osteoclasts; Osteogenesis; Osteoporosis; RANK Ligand; RNA, Messenger; Tartrate-Resistant Acid Phosphatase; Tibia; Uterus; Xanthophylls