Composition for preventing or treating osteoporosis and preparation and application thereof
A technology for osteoporosis and composition, applied in the direction of drug combination, medical preparations containing active ingredients, applications, etc., can solve the problems of increasing the risk of osteosarcoma, many side effects, toxic side effects, etc., and achieve the purpose of inhibiting osteoclasts Proliferation, improvement of osteoporosis, and promotion of osteoblast differentiation activity
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Embodiment 1
[0031] Example 1: Effect of Composition on Osteoclast Activity
[0032] Excessive proliferation and activation of osteoclasts can cause increased bone resorption, reduce bone mass, reduce bone density, increase bone fragility and fracture risk. Therefore, inhibiting the differentiation of bone marrow mononuclear macrophages into osteoclasts is helpful for the prevention and treatment of osteoporosis.
[0033] Bone marrow mononuclear cells were isolated from the femur and tibia of 1-month-old mice (purchased from Guangdong Provincial Medical Experimental Animal Center), and evenly spread into 24-well plates, 1 × 10 per well. 5 After the cells adhered to the wall, they were cultured with α-MEM medium containing 25ng / ml M-CSF, 25ng / ml RANKL cytokines and 10% fetal bovine serum. For different pharmaceutical compositions, the culture medium was changed every 3 days. After 6 days, the data of osteoclasts in each group were calculated by using TRAP staining. The positive number of...
Embodiment 2
[0039] Example 2: Effect of composition on bone mineral density and trabecular bone in ovariectomized mice
[0040] Animals used in this example, female C57BL / 6 mice, were purchased from Guangdong Medical Experimental Animal Center. The mice were kept at a temperature of 23±2°C, a humidity of 55±5%, a ventilation frequency of 12-15 times / hour, and a lighting time of 12 hours / day (7:00-19:00 light), 5 / breeding cage ( 235×325×170H mm), feeding conditions: solid feed (Guangdong Medical Experimental Animal Center), free diet. When the mice were 3 months old, the mice were randomly divided into a sham operation group, a model group and an administration group. Mice were fasted for 12 hours before surgery, without food or water. Mice were anesthetized using isoflurane, then the skin was washed and sterilized with 75% ethanol. The mice in each group were operated by ventral incision. Except the sham operation group, the ovaries were not removed, and the mice in the other groups we...
Embodiment 3
[0046] Example 3: Effect of the composition on the antioxidant capacity of bone tissue in ovariectomized mice
[0047] The antioxidant capacity of mouse bone tissue was determined by oxidative radical absorbance capacity (Oxygen Radical Absorbance Capacity, ORAC) experiment.
[0048] Bone tissue sample pretreatment: in embodiment 2, take left hind limb of mouse, after stripping muscle and connective tissue, collect in centrifuge tube after grinding in liquid nitrogen, add perchloric acid solution (3%) to prepare 2% bone tissue The tissue homogenate was centrifuged at 10,000 r / min for 15 min at 4°C, and the supernatant was taken as a sample solution for ORAC determination.
[0049] ORAC experiment process: Add 20 μL bone tissue homogenate supernatant and 20 μL phosphate buffer saline of different groups of mice to the 96-well plate, then add 20 μL sodium fluorescein, and finally add 140 μL AAPH, and quickly place the 96-well plate in The assay was started in a fluorescent micr...
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