We compared the total errors observed from both precision and accuracy validation experiments with defined medically allowable errors for each quantitative test,and used Westgard's method evaluation decision chart for initial judgement of the acceptability of method validation performance. Moreover,we need to judge the acceptability of other method validation parameters,so that we could integratedly assess and judge whether the testing system is acceptable to use in the laboratory.

Objective To study the effects of resveratrol against toxicity induced by arsenic trioxide in rats.Methods Arsenic trioxide was given to SD rats intraperitoneally for 4 weeks.Resveratrol was injected intraperitoneally to the animals 4 h before arsenic trioxide challenge at dose of 30,60,or 120 mg?kg-1?d-1.Four weeks later,the contents of malondialdehyde(MDA),superoxide dismutase(SOD),nitric oxide(NO),glutathione peroxidase(GSH-Px) in serum,lung,spleen,liver and brain tissues were measured.Results Compared with the normal control rats,arsenic trioxide challenge resulted in increases of NO and MDA contents in serum,lung,spleen,liver and brain tissues,and decreases of GSH-Px and SOD levels in the rats received arsenic trioxide only.Resveratrol significantly inhibited these changes induced by arsenic trioxide in rat serum,lung,spleen,liver and brain tissues in a dose-dependent manner.Conclusion Resveratrol can protect antiperoxidase activity and inhibit peroxide productions.

BACKGROUND:Among various seed cel s, synovial mesenchymal stem cel s have unique advantages in the repair of articular cartilage injury. OBJECTIVE:To review the progress of synovial mesenchymal stem cel s and its intra-articular injection in the treatment of articular cartilage injury. METHODS:The first author searched PubMed and CNKI by computer to retrieve articles published from January 2004 to December 2004 using the keywords of“synovial mesenchymal stem cel s;intra-articular injection;cartilage repair”in English and Chinese, respectively. Final y, 57 articles were included in result analysis. RESULTS AND CONCLUSION:It is easy to isolate and culture synovial mesenchymal stem cel s, which has great advantages in cartilage repair. What’s more, intra-articular injection therapy for articular cartilage injury is feasible and safe. Intra-articular injection of synovial mesenchymal stem cel s is a very promising treatment for cartilage damage, but there are stil many problems to be solved in the future.

Objective To investigate the clinical significance of lipoprotein-associated phospholipase A2(LP-PLA2) measure-ment for type 2 diabetes mellitus(T2DM) patients combined with atherosclerosis .Methods The concentrations of LP-PLA2 ,cho-lesterol(CHO) ,triglyceride (TG) ,low density lipoprotein(LDL) ,high density lipoprotein(HDL) were measured for 47 T2DM pa-tients combined with atherosclerosis(patient group) and 94 healthy people who just underwent healthy examination and were proved to be healthy(control group) ,meanwhile the age and gender information of those people were collected .Then the tests results were compared between the two groups .Results There was no significant difference in age ,gender ,CHO ,HDL ,TG ,LDL between the two patient and control group(P>0 .05);Plasma LP-PLA2 level in patient group was higher than that in control group ,and the difference was statistically significant(P<0 .05) .Non-conditional Logistic regression analysis showed that the LP-PLA2 level was the risk factor with statistical significance(P<0 .05) .Conclusion LP-PLA2 concentration is an independent risk factor for athero-sclerosis in T2DM patients ,and its measurement has certain value for the diagnosis of atherosclerosis in T2DM patients .

Object To study the optimal conditions and parameters for the enrichment process of scoparone in Yinchenhao Decoction (YCHD) with macroporous resin. Methods With the enrichment degree of scoparone in YCHD as an index, the optimal conditions of the enrichment process were investigated. Results The optimal conditions were that the aqueous extract of YCHD was taken into the macroporous resin column, and kept for 30 min, then the resin was washed by five times of distilled water to get rid of impurity and three — four times of 70% ethanol to elute scoparone. Conclusion The process is feasible to enrich effective ingredient scoparone from YCHD.

This paper was aimed to study the genetic diversity and genetic relationship of germplasm resource of Lonicerae Japonicae Flos in order to provide references for its breeding. A total of 36 samples from 18 farm varieties and wild species, as well as related species of Lonicera japonica Thunb. from the main production areas were studied by ISSR-PCR markers. The Jaccard coefficient was worked out by NTSYS-pc software. And a cluster dendrogram of different samples was established based on unweighted pair-group method with arithmetic mean (UPGMA). The re-sults showed that 12 ISSR primers generated 129 loci of which 114 loci were polymorphic. The average percentage of polymorphic bands (PPB) is 88.37%. In the cluster dendrogram, different samples of Lonicera japonica are in the same group, which showed that it is a natural species; the wild sample is separated from the cultivated samples; the traditional type-Maohua is relative stable, but the type of Jizhuahua includes complicated varieties, and it has obvi-ous genetic variation; the new variety Jiufeng 1 has already distinct into one stable type. It was concluded that the ISSR method was suitable for germplasm identification, genetic diversity analysis of Lonicerae Japonicae Flos, thus providing a theoretical foundation for its cultivation and breeding.

ObjectiveTo explore the expression and clinical significance of Ras-related C3 botulinum toxin substrate 1 (Rac-1) protein and hypoxia-inducible factor 1α (HIF-1α) in breast cancer and their relationship with tumor stage, node metastasis status and hormone receptor status. MethodsImmunohistochemical method was used to detect the expression of Rac-1 and HIF-1α protein in 139 specimens of breast cancer,combined with their clinical pathological characteristics and hormone receptor status for statistical analysis.Results The expression of Rac-1 and HIF-1α in breast cancer tissue were 64.75 ％ and 65.47 ％,respectively.The levels were related with the stage of TNM and histological grade (P ＜ 0.05,P ＜ 0.01).There was no significant correlation between these two proteins'expression and the age of patient,primary pathological location, histologic type and menstruation status of breast cancer patients(P ＞ 0.05). The expression of Rac-1 and HIF-1α had no statistical significance between triple negative breast cancer(TNBC)and non-triple negative breast cancer (NTNBC) patients (x2 =1.1229,x2 =0.1786,P ＞ 0.05); The expression level of Rac-1 was positively correlated with HIF-1α in these breast cancer specimens (rs =0.414,P ＜ 0.01).ConclusionThe expression of Rac-1 is positively correlated with HIF-1α level in breast cancer.The relationship between Rac-1 and HIF-1α might be as a new important marker to estimate the invasion,metastasis extent and prognosis in breast cancer.Blocking the regulation between Rac-1 and HIF-1α might be a new treatment target in breast cancer.

BACKGROUND: The main role that the osteoprotegedn (OPG) plays in bone tissues is to inhibilate the formation and the activity of osteoclast, while as for the receptor activator of nuclear factor-κB ligand (RANKL), it is to stimulate the differentiation and the activity of osteoclast. Both OPG and RANKL are important for the regulation of osteoclastic function. Recent studies have found the stimulative effects of adiponectin on the proliferation and the differentiation of osteoblast, as well as the coupling between adiponectin and bone metabolism. But effects of adiponectin on osteoclast remain unclear. OBJECTIVE: To investigate the effect of adiponectin on the expression of OPG and RANKL in osteoblast, and to further analyze its effects on the formation of osteoclast. DESIGN, TIME AND SETTING: A contrast observational experiment was conducted in the laboratory of Institute of 2008.MATERIALS: Cancellous bone in anterior superior lilac spine was obtained from adult normal by surgery for cell incubation. Clinical samples were provided by the Xiangya Hospital. METHODS: Human osteoblast was incubated with different doses of adiponcetin (0, 3, 10 and 30 mg/L) for 48 hours, after which OPG and RANKL mRNA and protein expression level was determined. In addition, adiponcetin was added into the co-culture system of osteoblast and peripheral blood monouclear cells for examing its effects on osteoclast formation. MAIN OUTCOME MEASURES: OPG and RANKL mRNA and protein expression in human osteoblast was determined using fluorescent quantitative polymerase chain reaction (PCR) and enzyme linked immunosorbent assay (ELISA). Osteoclast was detected by antitartaric acid acid phosphatase staining. RESULTS: Adiponcetin inhibited osteoblast OPG mRNA and protein expression in a dose-dependent way (P < 0.05). Adiponcetin promoted osteoblast RANKL mRNA and protein expression in a dose-dependent way (P < 0.05). Adiponectin induced the osteoclasts formation in the co-culture system of osteoblast and peripheral blood monouclear cells. CONCLUSION: Adiponectin has the effect of inducing osteoclast formation via stimulating RANKL expression and inhibiting OPG

Objective To compare the effect of proximal femoral intramedullary nail fixation and femoral retrograde intramedullary nail combined with hollow lag screw fixation in the treatment of ipsilateral femoral neck and shaft fractures.Methods Data of 42 patients with ipsilateral femoral neck and shaft fractures who were admitted in our hospital from January 2007 to January 2016 were retrospectively analyzed.According to different fixation methods,the patients were divided into two groups:single intramedullary nail group (SIN group) (20 cases,treated with single proximal femoral intramedullary nail,15 males and 5 females with an average age of 39.4);combined internal fixation group (CIF group) (22 cases,treated with femoral distal intramedullary nail combined with femoral neck hollow lag screw,17 males and 5 females with an average age of 42.2 years).In the SIN group,4 cases were type A,9 cases type B,7 cases type C according to AO classification.And 14 cases belonged to Ⅰ or Ⅱ (stable fracture),6 cases of type Ⅲ or Ⅳ (unstable fracture) according to Garden classification.In the CIF group,3 cases were type A,10 cases type B,9 cases type C according to AO classification.And 16 cases belonged to type Ⅰ or type Ⅱ,6 cases type Ⅲ or Ⅳ according to Garden classification.The incision length,operation time,intraoperative blood loss,fracture healing time,postoperative weight time,stability of internal fixation,hip function score,pain in the knee and postoperative complication rate were compared between the two groups.Results There was no significant difference in gender,age and fracture classification between the two groups.The operation time (75.0±10.2 min),intraoperative blood loss (150.6±80.4 ml),hip Harris score excellent rate (80％) of incidence of knee pain in postoperative 3 months (10.0％) of the SIN group were significantly lower than those of the CIF group (105.2±18.4 min,180.0±56.8 ml,86.4％ and 31.8％).The length of incision (8.3±1.4 cm) in the SIN group was significantly longer than that in the CIF group (4.0±0.6 cm).There was no significant difference in fracture healing time (SIN group 20.O±4.0 weeks,CIF group 19.6±4.2 weeks) and postoperative weight time (SIN group 8.2±4.0 weeks,CIF group 8.0±4.2 weeks) between the two groups.The main complications of the two groups were delayed union (3 cases of SIN group and 1 case of CIF group),nonunion of fracture (1 case of SIN group) and,coxa vara (1 case of SIN group).The complication of SIN group (30％) was significantly higher than that of CIF group (4.5％),which occurred mainly in unstable femoral neck fracture cases.Conclusion Both proximal femoral intramedullary nail fixation and femoral retrograde intramedullary nail combined with hollow lag screw can effectively treat femoral ipsilateral femoral neck and shaft fracture.Femoral retrograde intramedullary nail combined with hollow lga screw has more therapeutic advantages for unstable femoral neck fractures (Garden Ⅲ and Ⅳ).

Objective To study the anti-neuroglioma effect of methyl-mercuric chloride(MMC) by observing the morphological changes of apoptotic neuroglioma cells induced with MMC in rats with brain neuroglioma.Methods The rat models of neuroglioma were established,and divided into two groups.The rats in experimental group were lavaged with MMC 1 week after injected with C6 glioma cells,10 mg?kg-1every day,the rats in control group were treated with sodium chloride at the same dose.24 d after inoculation all rats were sacrificed except natural death,the brain tissues were obtained,and the pathohistological changes were observed under light microscope and transmission electron microscope.Results The macropathological result showed that the tumor volume in experimental group was smaller than that in control group.Under light microscope,in experimental group the growth density of C6 ghioma cells was lower than that in control group,and the apoptotic cells with smaller volume and karyopyknosis were found.The result of transmission electron microscope showed that in experimental group,the glioma cells had some changes such as karyopyknosis,chromoplasm margination,nuclear fragmentation and vacuolar degeneration and so on.Conclusion MMC has inhibitory effect on the proliferation of C6 glioma in rats in vivo,its mechanism may be related to inducing the apoptosis of neuroglioma cells.