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Objective To evaluate the anti-osteoporotic effect of xanthohumol(XN)in animal and osteoblast.Methods The anti-osteoporotic study on XN was performed with ovariectomized mice model.Serum biochemical indexes,bone mineral density(BMD)and bone histomorphology were measured using Elisa kits and Micro-CT analysis.In vitro test,the effect of XN on osteoblastic proliferation,differentiation and mineralization were assayed.The expression of protein related to bone for-mation was measured by Western blot analysis.Results In vivo experiments,XN significantly increased the estrogen level, reduced the high bone turnover rate,improved the microenvironment and BMD in ovariectomized mice.In vitro experiments, XN protected bone loss not only by promoting osteoblastic proliferation,ALP activity and bone mineralization,but also through increasing the expression of osteopontin(OPN),bone sialoprotein(BSP)and bone morphogenetic protein-2(BMP-2). Conclusion This is the first report to confirm that XN has anti-osteoporotic effect,which provides a new approach for the clin-ical treatment of osteoporosis.
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Objective To determine the contents of total flavonoids and xanthohumol in hop from 29 different countries and regions .Methods Rutin colorimetric method was used to determine the content of total flavonoids .HPLC-UV method was established for the determination of xanthohumol in hops .HPLC method was performed by Dikma Technologies Diamonsil C18 (250 mm × 4 .6 mm ,5 μm ) column with mobile phase acetonitrile-1％ glacial acetic acid solution at the flow rate of 1 .0 ml/min .The column temperature was 25 ℃ .The detection wavelength was 370 nm .Results The equation of linear re-gression of total flavonoids was A=30 .345C+0 .0168 ,r=0 .9999 .The equation of linear regression of xanthohumol was A=55446 C+9040 .5 ,r=0 .9999 .Their linear ranges were respectively 20 .2-404 .0 μg/ml ,2 .152-43 .040 μg/ml ,which indica-ted a good linear relationship .The RSDs of precision and repeatability were less than 2％ .The average recoveries of flavonoids and xanthohumol were respectively 102 .71％ and 100 .21％ .Conclusion The contents of total flavonoids and xanthohumol in different hops varieties are significantly different and the import hops was better than the domestic hops in this study .
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Objective To observe the anatomical and histological features of anterolateral ligament (ALL)in the knee of Chinese adults,so as to identify the existence of ALL and provide an anatomical foundation for clinical reconstruction.Methods Ten adult knee specimens were randomly selected to be dissected,and the femoral,tibial and meniscus attachment points of the ALL were observed.The length,width and thickness were measured using the vernier caliper after the dissection.Three specimens were subjected to histological staining in the end.Results (1)ALL originated from the lateral femoral condyle—the same point of the lateral collateral ligament femoral side or the distal-anterior side,with its body divided into two branches,located in the tibia and the lateral meniscus respectively.The starting point of tibial side ALL was located at the mid-point of Gerdy's tubercle to fibula head,below tibial cartilage edge,with the meniscus point located in the lateral meniscus anterior horn and body junction area.(2) The average length of ALL is 38.89 ± 4.67 mm.The width in the femur,tibial attachment point was fan-shaped spread connected with sclerotin,being the narrowest at the joint line.The width at the femur,tibial attachment point and the joint line was 8.49 ± 1.36 mm,8.15 ± 1.38 mm and 6.49 ± 1.09 mm respectively,with the thickness of 1.33 ± 0.38 mm.The distance from tibia attachment points to the Gerdy's tubercle,fibular head and tibia cartilage margin was 22.59 ± 3.04 mm,21.15 ± 2.78 mm and 5.76 ± 0.57 mm respectively.(3) HE staining showed that ALL was dense connective tissue consisting of parallel arranged collagen fibers,while S-100 staining indicated that ALL contained sensory motor nerve fibers.Conclusion ALL is independent of the joint capsule and originates from the femoral lateral condyle.Its body is divided into two branches,located in the tibia and the lateral meniscus respectively.
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ObjectiveTo compare the clinical efficacy of surgical treatment and non-surgical treatment of humerus surgical neck fracture for elderly patients. Methods106 elderly patients who were diagnosed of fracture of surgical neck of humerus were selacted as the research object, of which 56 patients underwent surgical treatment using locking compression plate ( Operation group ), 50 patients underwent non - surgical treatment using skin traction smoothing method( Control group) ,all the patients were followed up for 6 to 10 months,the clinical efficacy and complications were eorpared. ResultsOperation group, good rate of 83.9％, significantly higher than contra group,good rate of 60.0％ ,the difference was statistically significant ( x2 = 7.61, P ＜ 0.01 ). Operation group, no postoperative complications,5 cases of non- surgical complications, two groups had significant differences in complications (x2 =3.86, P ＜ 0.05 ). ConclusionSurgical treatment of humeral surgical neck fractures in elderly rehabilitation had better efficacy, fewer complications.
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Objective To explore the clinical effect of anterior combined with posterior fixation and vertebra reconstruction for unstable lumbar burst fracture via small incision alone posterior median line.Methods This study was based on 40 patients suffering from unstable lumbar burst fracture,who underwent anterior combined with posterior fixation and vertebra reconstruction.All the patients were followed up for 1～2 years.The shape and the function of spinal column were estimated in preoperative stage,postoperative stage and the duration of following.The data in the formal 3 stages were compared.Results Between the preoperative and postoperative data,there were statistically significant differences in the Cobb's angle,angle of kyphosis,anterior height of the fracture vertebral body,sagittal index and JOA scores(t=34.085,31.604,27.988,23.798,31.834,all P＜0.05).But no similar result was detected between the postoperative data and the data during the following(P＞0.05).Conclusion Anterior combined with posterior fixation and vertebra reconstruction via small incision had a significant effect in unstable lumbar burst fracture,and it was worthy of further study and clinical popularization.