OBJECTIVE:To establish the method for the content determination of2,3,5,4'—tetrahydro-xystilbene—2—O—?—D—glucoside in Yangxueshengfa capsules by RP-HPLC.METHODS:Alltima-C 18 was used as the chromatographic column;the acetonitrile-water(15∶85)was taken as the mobile phase with flow speed at1.0ml/min and detection wave?length at320nm.RESULTS:In the range of0.45?g～2.26?g,2,3,5,4'—tetrahydro-xystilbene—2—O—?—D—glucoseide were in direct proportion to the peak area value(r=0.9996),the mean recovery rate was98.32%(RSD=1.58%,n=6). CONCLUSION:This method was simple,convenient and accurate,which can be used for the content determination and the quality control of Yangxueshengfa capsules.

BACKGROUND: Recently, zirconia ceramic implants have been reported to be used in clinic. Increasing studies on surface treatment of ziconia implants have been done, in order to promote bone-implant osseointegration and increase the success rate of implantation. There are no recognized surface treatment techniques of zirconia implants as yet.OBJECTIVE: To summarize the research progress in surface treatment techniques of zirconia implants.METHODS: The first author searched the CNKI, PubMed and Web of Science databases for relevant articles published from January 2000 to October 2016. The keywords were zirconia or zirconium, implant, surface treatment in Chinese and English, respectively. The search condition was((zirconia or zirconium) AND implant) AND surface treatment. Here,we reviewed the surface treatment techniques of zirconia implants, and introduced the properties, the surface treatment techniques and commercialization of zirconia implants.RESULTS AND CONCLUSION: Totally 23 papers were included in result analysis. Commonly used surface treatment technologies of zirconia implants include sand blasting, acid etching, sandblast and acid-etching, selective filtration etching, laser, ultraviolet and coating. These technologies all contribute to improving the surface activity of the implant,increasing the roughness, and promoting bone bonding to a certain extent.Because of the very limited experiments,further investigations are required to explore the optimum technique for the surface treatment of zirconia implants.

BACKGROUND: Hedgehog signaling pathway is shown to contribute to the osteogenesis of bone marrow mesenchymal stem cells, and to play an important role in regulating the expression of RANKL in osteoblasts. Nowadays, the definite signal transduction pathway has been revealed gradually.OBJECTIVE: To review the research progress of RANKL in osteoblasts that regulated by hedgehog signaling pathway.METHODS: A computer-based online search in CNKI, Google Scholar and PubMed databases was performed with the key words of Hedgehog, osteoblast, BMSCs, PTHrP, CREB, NFAT, RANKL in English and Chinese, respectively.Literatures related to the expression of RANKL in osteoblasts that regulated by the Hedgehog signaling pathway were included initially and 37 eligible articles were extensively summarized for review.RESULTS AND CONCLUSION: The Hedgehog signaling pathway plays an advanced role in the osteogenic differentiation of bone marrow mesenchymal stem cells, and also upregulates intracellular parathyroid hormone related protein, which activates its downstream signaling molecules cAMP response element binding protein and nuclear factor of activated T cells ulteriorly, to promote the expression of RANKL in osteoblasts and increase the differentiation and formation from osteoclast precursor cells to mature osteoclasts.

Objective To explore the methods and clinical application of percutaneous pediculoplasty in the treatment of vertebral pedicular osteolytic metastases.Methods Percutaneous pediculoplasty was performed in 18 patients with (23 Vertebral pedicles ) osteolytic metastases,3 cases localized in thoracic vertebral pedicles and 15 cases in lumbar vertebral pedicles,and two vertebral pedicles involved in 5 cases . Under Multislice helical CT guidance ,2.5～5ml of polymethylmethacrylate ( PMMA ) mixture (ratio of polymer,moner,ultrafluid iodinated oil was 20g:10ml:3ml) was injected into pathologic pedicles in step by step after successful puncture using 11-13G needles. All cases had been followed for 1～18 months.Results All cases were successful punctured. Pain relieved in all cases after percutaneous pediculoplasty.7 cases had cement leakage,among them,cement leaked into tumor tissue in 5 cases(2 cases with leakage into intervertebral foremen),nerve radicular pain occurred in one case,the pain disappeared 3 days later after intravenous mannitol and lower dose dexamethasone drips;the cement leaked into vertebral canal a little without clinical symptom in one case.Conclusion CT-guided percutaneous pediculoplasty is a minimally effective and safe method for osteolytic vertebral pedicular metastases in treatment of pain and enhancement of spinal stability.

Objective:To investigate the value of proton magnetic resonance spectroscopy (1H-MRS) on the diagnosis of SCA3/MJD,and to calculate the correlation between 1H-MRS ratio and the clinical score.Methods:Sixteen patients with SCA3/MJD and 19 healthy volunteers were scanned with 1H-MRS.The data of N-acetyl aspartate,creatine,choline-containing compounds,myoinositol,NAA/Cr,Cho/Cr,and mI/Cr ratio were collected,which were grouped for comparative study.The onset patients with SCA3/MJD were evaluated with the International Cooperative Ataxia Rating Scale and Scale for the Assessment and Rating of Ataxia,the correlation between NAA/Cr,Cho/Cr or mI/Cr ratio and the clinical score was calculated.Results:The NAA/Cr in the pons and cerebellar dentate nucleus from the onset patients with SCA3/MJD was significantly reduced compared to that in the normal control group.The NAA/Cr in the cerebellar dentate nucleus of onset patients with SCA3/MJD was obviously correlated with ICARS.Conclusion:SCA3/MJD lesions are mainly located in the cerebellum and brainstem,where gray and white mater are also involved.The cerebellar dentate nucleus may be the earliest involved area.There is a correlation between the ICARS and the cerebellar lesion degree.The ICARS reflects the severity of clinical manifestations.1H-MRS is useful in the diagnosis of SCA3/MJD.

Objective To investigate the effect and mechnism of preptin on connect tissue growth factor (CTGF) in human osteoblasts. Methods Recombinant human preptin was used to treat primary human osteoblasts, and Western blot was used to detect CTGF protein level. Mitogen-activated protein kinase p38(p38MAPK), extracellular signal-regulated kinase (ERK1/2), c-jun N-terminal Kinase (JNK), and their phosphorylation levels were also detected by Western blot. MAPK inhibitors (PD98059, SP600125, or SB203580)were used to elucidate the mechnism of preptin induced expression of CTGF in human osteoblasts. Results Treatment of human osteoblasts with preptin caused a time and dose-dependent increase in CTGF secretion. Preptin induced activation of ERK, but not p38MAPK or JNK in human osteoblasts. Furhermore, pretreatment of human osteoblasts with the ERK inhibitor PD98059 abolished the preptin-induced CTGF secretion. Conclusion Preptin induces CTGF expression in human osteoblasts by means of ERK/MAPK pathway.

AIM: To discuss the clinical efficacy of fresh amniotic membrane ( AM ) during the microscopic adjustable suture surgery in children's intercommunity strabismus, in order to guide clinical treatment.
METHODS: With the clinical randomized control study (RCT), 60 (112 eyes) cases of patients in childhood who received microscopic strabismus surgery in our hospital were divided them into two different groups from Jan. 2010 to Oct. 2015. According to the application of AM on the basis of ophthalmology outpatient number, 30 cases (58 eyes) in group A were treated with rectus muscle recession surgery combined adjustable suture combined with AM. The other 30 cases (54 eyes) in group B were treated with rectus muscle recession surgery combined adjustable suture only. All patients in two groups were followed-up over 6mo after the strabismus surgery.
RESULTS:Twenty-seven cases ( 48 eyes ) of all the strabismus patients must be adjusted after strabismus surgery, and the eye position adjustment rate was 42.9%. At 1mo after surgery, eye position of 18 cases (29 eyes) can be adjusted in all patients, and 44. 8% (16 cases, 26 eyes ) in group A with the average of adjustment lengths was 2. 56±0. 64mm, and 5. 6% ( 2 cases, 3 eyes ) in group B, with the average of adjustment lengths was 0. 52±0. 28mm, the differences of the adjustment rate and the average of adjustment amount were both high statistically significant (χ2 =22.477, P<0. 01; t=16. 502, P<0. 01 ) between the two groups. Except of 3 cases who couldn't cooperate with eye position adjustment, they all received eye position adjustment in different degrees in one month after strabismus surgery,and after eye position adjustment, 27 cases (53 eyes) in group A got normal eye position, and the correction rate of eye position was 91. 4%, and 16 cases (28 eyes) in group B got normal eye position after eye position adjustment, the correction rate was 51. 9%, the differences of the correction rate were statistically significant (χ2=21. 827, P<0. 01) between the two groups.
CONCLUSION: The application of fresh AM in the microscopic adjustable suture strabismus surgery is exactly effective in treatment of children's intercommunity strabismus. It can significantly extend the adjustment time and increase the adjustment amount, and it also can statistically improve the controllability and achievement ratio for children's strabismus surgery.

Objective To explore the effects of the Chinese medicine, modified Erchen decoction, on the serum lipid spectrum of ApoE-/-mice, and to explore its possible anti-atherosclerotic mechanism.Methods Forty-four male 7-8-week old ApoE-/-mice were used in this experiment.ApoE-/-mouse models of atherosclerosis were generated by high-cholesterol diet for 4 weeks.And then, they were given simvastatin or modified Erchen decoction by gavage.The body weight of mice was recorded every week, The mice were sacrificed after treated with the drugs for 8 weeks continuously, and the plasma lipid was determined by enzymatic method.The aortic valves and arches were stained with oil red O to depict atherosclerotic plaques and liver structural changes of the mice were examined by pathology.Results Modified Erchen decoction lowered plasma lipid ( including TCHOL and LDL-C ) significantly ( P<0.01 ) .The body weight was increased in the mice of all groups, but it was more pronounced in the mice of model group than in the blank and modified Erchen decoction groups.The serum CHOL and LDL-C levels were significantly lowered in the modified Erchen decoction group (P<0.01).The area of atherosclerotic plaques in the aortic wall was significantly reduced in the mice of modified Erchen decoction group as shown by oil red O staining.The pathological changes of hepatocytes were less severe and the structure of hepatic lobules was better preserved in the mice of modified Erchen decoction group.Conclusions The Chinese medicin modified Erchen decoction can effectively reduce serum lipids, regulate lipid metabolism, and ameliorate the process of atherosclerosis in ApoE-/-mice.

The pharmacokinetics of thyrotropirrreleasing hormone (TRH) made in China was studied in rabbits. TRH concentrations in plasma, urine and various tissues were measured by RIA. After intravenous injection of TRH, the plasma concentration-time curve was shown to fit a two compartment open model with the following pharmacokinetic parameters: 0.8 mg/kg, T1/2?=0.551 min, T1/2? = 9.374 mm, VI = 3.018 ml/kg, Vb = 22.659 ml/kg and AUC = 0.479g. L-1. m-1; 2.0mg/kg, T1/2? = 0.629 mm, T1/2?= 9.734 min, VI = 5.135 ml/kg, Vt = 28.848 ml/kg, and AUC = 0.962g. L-1. m-1; 5.0mg/kg, T1/2? =0.720 min, T1/2?= 10.738 min, VI = 6.120 ml/kg, Vb = 31.928 ml/kg and AUC=2.540 g. L-1. m-1. TRH was distributed widely in tissues and concentrated mainly in the kidney and pituitary. TRH was eliminated partly by the kidney and 21.9% was excreted within 2h after intravenous injection.

Serum osteoprotegerin (OPG) concentration was measured in 647 healthy female adults (aged 20-81 years), and was compared with that of other races. The serum OPG was positively correlated with age (r = 0.276, P <0.01). The geometric mean value of serum OPG in premenopausal women was significantly lower than those in perimenopansal and postmenopausal women. The serum OPG in middle-aged Chinese women was signifieandy higher than those in middle-aged Austrian and Icelandic, but this was quite contrary to the results obtained in old-aged women.