Objective To investigate the change of the serum matrix metalloproteinase-13 (MMP-13) and tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) and the correlations of MMP-13 and TIMP-1 with bone metabolic markers or bone mineral density(BMD) in aged postmenopausal Chinese women.Methods One hundred and twenty women aged 48-65 years with postmenopausal were selected as subjects.They were divided into normal group(n =28),low bone mass group (n =36) and osteoporosis group (n =56) accordance with the WHO standard.The levels of serum MMP-13,TIMP-1,estradiol (E2),Osteoprotegerin (OPG),Osteoprotegerin ligand (OPGL),Procollagen terminal propeptide of N (PINP),and Type Ⅰ collagen cross-linked C terminal peptide(CTX) were measured using enzyme linked immunosorbent assay(ELISA).And the ratios of MMP-13 to TIMP-1 were calculated.Bone mineral density(BMD) of the lumbar spine,femoral neck,Fahrenheit and greater trochanter were measured using dual energy X-ray absorptiometry.Results There was significant difference of serum MMP-13 concentrations in normal controls,low bone mass group and osteoporosis group((27.08 ± 1.41) μg/L,(45.64 ± 1.62) μg/L and (44.25 ± 1.21) μg/L; F =110.314,P =000),and serum MMP-13 concentrations in low bone mass group and osteoporosis group higher than that in normal controls (P ＜ 0.05),serum MMP-13 concentrations in low bone mass group higher than that in osteoporosis group,but there was on significant difference(P ＞ 0.05).But Serum TIMP-1 concentrations in three groups was no significant difference (F =10.721,P =0.801).The ratio between MMP-13 and IIMP-1 was 0.185 ± 0.062,0.311 ± 0.053,0.332 ± 0.063 respectively,and there was significant difference of the three groups (F =137.771,P =0.000),and the ratio of the low bone mass group and osteoporosis group higher than the normal group(P ＜0.05),but there was no significant difference between the two groups.In osteoporosis group,Negative correlations between MMP-13,and BMD,E2 and OPGL,were found (r =-0.296,-0.198,-0.301,-0.298,-0.233 respectively,P ＜ 0.05).Meanwhile positive relations were found between MMP-13 and OPG,PINP,CTX (r =0.228,0.315,0.312 respectively,P ＜ 0.05).In low bone mass group,the level of MMP-13 was significantly relative with BMD (the lumbar spine,Fahrenheit),E2 and CTX (r =-0.188,-0.196,-0.235,0.289 respectively,P ＜ 0.05).Conclusion There are significant correlations between serum MMP-13,ratios of MMP-13 and TIMP-1 and bone metabolism marker and BMD.MMP-13 level may increase with increases in osteoporosis and osteopenia.The increases of serum MMP-13 and the decrease of ratio of MMP-13 to TIMP-1 might be biomarkers in high bone turnover state,such as postmenopausal osteoporosis and early stage of osteopenia.

Objective To study the expression of HOXB9 gene in Hela cells,Mocoy cells, SP2/0 cells and U251 cells. Methods The expression of HOXB9 gene was detected by semi-quantitative RT-PCR method. Results Hela cell and U251 cell expressed HOXB9 gene, which SP2/0 cell and Mocoy cell didn't express it. Conclusion The expression of HOXB9 gene was different in different cells.

Objective To investigate age-related changes of serum prolactin(PRL) and testosterone (T) in aging males and to study the correlation between PRL and prostatic hyperplasia. Methods 84 aged males were divided into four groups, the fifties, the sixties, the seventies and the eigh- ties . Serum PRL and T were measured using radioimmunoassay. The volume of prostate was evaluated by ultrasound in 38 and it's correlation with PRL studied. Results Serum T level of the 4 age groups from fifties to eighties was (25.92?2.54),(21.00?1.92),(18.37?2.49) and (14.75? 2.38 ) nmol/L respectively and PRL concentration (1.11?0.16), (0.96?0.20), (0.99?0.18) and (0.91?0.29) nmol/L. Analysis of variance showed that serum T concentration significantly decreased with age ( F =3.44, P 0.05). No association between PRL and volume of prostate has been observed. Conclusions PRL play a physiological role in the development and growth of prostate via androgen. But such effect of androgeno-dependence on prostate is greatly diminished because of the decrease of androgen hormone with age especially in the aged.

Objective To establish a mathematic model of correlativity of human cytomegalovirus(HCMV) infection between mothers and their newborns.Method The plasma HCMV-IgM content,HCMV-DNA levels in plasm and peripheral blood mononuclear cells (PBMCs) were assayed with ELISA and PCR technique.Results There was a evident correlation between the two generation,and there was largest correlativity between HCMV-DNA level of mother's plasma and HCMV congenital infection rate,its spearman rank correlative coefficient was 0 7018(P

Objective To observe the effect of conventional therapy plus trimetazidine on alcoholic cardiomyopathy (ACM) and plasma brain natriuretic peptide (BNP).Methods Eighty-six cases of ACM patients were divided into control group and observation group by random digits table method with 43 cases each.Control group was treated with conventional therapy,while observation group was added trimetazidine.Course of treatment was 3 months.The left ventricular ejection fraction (LVEF),left ventricular end diastolic diameter (LVEDD),6 min walk distance,plasma BNP before and after treatment and the efficiency in two groups was observed and compared.Results LVEF,LVEDD,6 min walk distance,BNP before treatment in control group were respectively (37.2 ±7.4)％,(57.6 ±7.4) mm,(312.8 ±21.6) m,(846.2 ±63.7)μg/L,and the indicators in observation group were respectively (38.5 ±8.1)％,(57.1 ±6.8) mm,(316.5 ± 23.9) m,(857.6 ± 61.4) μ g/L.All indicators between two groups was no statistically different (P＞0.05).LVEF,LVEDD,6 min walk distance,BNP after treatment in control group were respectively (43.5 ±8.6)％,(54.3 ± 6.4) mm,(511.6 ± 26.7) m,(679.4 ± 51.3) μg/L,and there were significant difference compared with those before treatment (P ＜ 0.05).LVEF,LVEDD,6 min walk distance,BNP after treatment in observation group were respectively (51.6 ± 9.2)％,(51.2 ± 6.3) mm,(579.3 ± 25.1) m,(536.5 ± 50.6)μ g/L,and there were significant difference compared with those before treatment (P ＜ 0.05).There were significant difference in LVEF,LVEDD,6 min walk distance and BNP after treatment between two groups (P ＜ 0.05).The total effective rate in observation group was 90.7％ (39/43),which was significantly higher than that in control group [72.1％ (31/43)] (x2 =4.914,P ＜ 0.05).Conclusion Adding trimetazidine on the basis of conventional therapy can improve the cardiac function and myocardial remodeling of ACM patients and improve clinical efficacy.

On the basis of the summarization about some MPH education experience in Sun Yat-sen University,we make the assumption concerning construction of MPH training quality assurance system ,expound the content and operating mode of this training quality system,and then offer reference for improvement of MPH training quality.

Objective To study the relation between the HPV6/18 virus infection and the development of pathological changes of cervix. Methods The number of HPV16/18 DNA copies and the expression rate of HPV16/18 E7 mRNA in the pathological cervix were examined by the quantitative fluorescent PCR combined with pathological diagnosis and immunohistochemistry staining. Results The HPV16 infection rates in chronic cervicitis group were much lower (7.4%) than that in the cervical intraepithelial neoplasia (CIN) groups and the cervical cancer group (69.6% and 72.7%), respectively. Statistical analysis showed that the difference of HPV16 DNA copies was not significant between the chronic cervicitis group and CIN groups. In contrast to the above mentioned result, the number of HPV DNA copies between the CIN groups and the cervical cancer group was significantly different. The HPV16 E7 gene expression rates in CIN Ⅰ, Ⅱ, Ⅲ and cervical cancer groups were 0,37.5%,42.9%,63.6%, respectively. Conclusion Ins more common than that with HPV18. The number of HPV16 DNA copies in cervical cancer tissues is markedly higher than that in CIN Ⅱ, Ⅲ groups. The HPV16 E7 mRNA expression is significantly increased in the cervical cancer, and it is more closely correlated to this pathological changes. The quantitative fluorescent PCR can be used to reflect the activity of HPV, and it is a useful method for the screening examination of HPV and for the early diagnosis and treatment of cervical caner.

Objective To compare the baroreflex sensitivity (BRS) when controlled hypotension was performed with sevoflurane versus isoflurane in the pediatric patients.Methods Sixty male American Society of Anesthesiologists physical status Ⅰ or Ⅱ patients,aged 3-16 yr,with body mass index of 20-28 kg/m2,scheduled for elective scoliosis surgery under general anesthesia,were randomly divided into 2 groups (n=30 each) using a random number table:sevoflurane-induced hypotension group (group Sev) and isoflurane-induced hypotension group (group Iso).Anesthesia was induced with midazolam,sufentanil and propofol.Endotracheal intubation was facilitated with rocuronium.Anesthesia was maintained with closed-circuit low flow anesthesia with either sevoflurane or isoflurane,maintaining mean arterial pressure at 55-65 mmHg and bispectral index values at 40-60 during surgery.Cardiovascular BRS was measured before induction of anesthesia (T0),immediately after intubation (T1),immediately after the end-tidal inhalational anesthetic concentration reached 1 minimal alveolar concentration (T2),and at 10,20 and 30 min after target hypotension (mean arterial pressure 55-65 mmHg) was achieved (T3-5).Results There was no significant difference in BRS at T0-2 between the two groups (P＞0.05).Compared with the value at To,the BRS was significantly decreased at the other time points in the two groups (P＜0.05).Compared with the value at T1,the BRS was significantly increased at T2,and decreased at T3-5 in the two groups (P＜0.05).The BRS was significantly lower at T3-5 than at T2 in the two groups (P＜0.05).The BRS was significantly lower at T3-5 in group Sev than in group Iso in the two groups (P＜0.05).Conclusion Sevoflurane produces better efficacy than isoflurane when used for controlled hypotension in the pediatric patients.

A rapid, sensitive and simple liquid chromatography-tandem mass spectrometric (LC-MS/MS) method was developed for the simultaneous determination of yogliptin and its metabolite in Wistar rat plasma. Linagliptin and dexamethasone were chosen as the internal standards of yogliptin and its metabolite, (R)-8-(3-hydroxypiperidine- -yl)-7-(but-2-yn-1-yl)-1-((5-fluorobenzo[d]thiazol-2-yl)methyl)-3-methyl- H-purine-2, 6 (3H, 7H)-dione, respectively. After a simple protein precipitation using acetonitrile as the precipitating solvent, both analytes and ISs were separated on a Grace Altima HP C18 column (2.1 mm x 50 mm, 5 microm) with gradient elution using methanol (containing 0.1% formic acid, 4 mmol x L(-1) ammonium acetate)-0.1% formic acid (containing 4 mmol x L(-1) ammonium acetate) as the mobile phase. A chromatographic total run time of 4.4 min was achieved. Mass spectrometric detection was conducted with electrospray ionization under positive-ion and multiple-reaction monitoring modes. Linear calibration curves for yogliptin and its metabolite were over the concentration range of 0.5 to 500 ng x mL(-1) with a lower limit of quantification of 0.5 ng x mL(-1). The intra- and inter- assay precisions were all below 14%, the accuracies were all in standard ranges. The method was used to determine the concentration of yogliptin and M1 in Wistar rat plasma after a single oral administration of yogliptin (27 mg x kg(-1)). The method was proved to be selective, sensitive and suitable for pharmacokinetic study of yogliptin and M1 in Wistar rat plasma.

Objective To evaluate the efficiency of our self-designed enriched filtrator of stem cells in screening and collecting enriched human bone marrow stem cells (BMSCs) for rapid construction of bioactive materials.Methods Bone marrow blood from 32 patients was circulated in our self-designed enriched filtratorand filtered through beta-tricalcium phosphate(β-TCP).The numbers of BMSCs were counted pre-and post-filtration to assess the enrichment efficiency.The numbers of nucleated cells,red blood cells and platelets were compared pre-and post-filtration to assess the effects of the enriched filtrator of stem cells on blood cells.Bacteriological examinations were performed to test the safety of the device.Scanning electron microscopy was carried out to observe the adhesion of BMSCs on β-TCP.Results There was a significant difference between the pre-fihration colony number of BMSCs cultured (232.8 ± 128.6/mL) and the post-filtration one (37.8 ± 34.9/mL) (t =10.743,P ＜ 0.001).The efficiency of BMSCs enrichment of the device was 85.6％ ±8.4％ (from 63.8％ to 97.1％).There were no significant differences between pre-filtration and post-filtration in the numbers of nucleated cells [(16.8 ± 5.4) × 109/mL versus (16.3 ±5.0) ×l09/mL],red blood cells [(3.9±0.6) ×1012/mL versus (3.8±0.6) ×1012/mL] and platelets [(120.4 ± 54.6) × 109/mL versus (123.0 ± 51.8) × 109/mL] (P ＞ 0.05).All the bacteriological examinations of the bone marrow samples were negative.After in vitro osteogenic induction culture,formation of numerous BMSCs colonies was observed on the β-TCP by scanning electron microscopy.Conclusion Since our self-designed enriched filtrator can efficiently collect enriched BMSCs and combine them with β-TCP simultaneously,the device is capable of rapid and safe construction of bioactive materials.