In order to study the enhancement of immune functions and autologous tumor-killing (ATX) activity by kappa-selenocarrageenan (KSC) in mice bearing sarcoma 180, the effects of KSC and/or Cyclophosphamide (Cy) on natural killer(NK) activity, lymphokine activated killer(LAK) activity, the production of interleukin-2 (IL-2), ATK activity and the growth of sarcoma 180 (S180) were observed. The results showed that KSC promoted NK activity, LAK activity and ATK activity in vivo, increased IL-2 production at 40mg/kg ?d x 9d. It also enhanced the antitumor action of Cy (20mg/kg?d x 9d) and offsetted the inhibition of Cy on immunocompetent cells. The ATK activity in splenocytes of SI80-bearing mice could be induced and augmented by recombinant interleukin-2 (rIL-2) in vitro. In conclution, KSC had a up-regulating effect on immune functions and ATK activity in tumor-bearing mice, therefore, can be used as a biological response modifier (BRM) in cancer biotherapy.

BACKGROUND:Recent studies indicate that osteolysis surrounding prosthesis is the main reason causing artificial joint loosening.The reason and development process of osteolysis surrounding prosthesis are not fully understood.OBJECTIVE:To observe the pathological changes of limiting membrane surrounding sterile loosened prosthesis of artificial hip ioint and compare that with cicatricial tissue surrounding internal fixation.DESIGN,TIME AND SETTING:Histological observation was done at The Second Hospital of Soochow University between September 2000 and December 2005.PARTICIPANTS:Limiting membrane surrounding prosthesis of eight artificial hip joints overhauled for loosening were removed during operation for pathological examination.METHODS:Specimens were fixed with 10%formaldehyde solution and embedded with paraffin,and were cut into sections,the sections were stained by hematoxylin-eosin(HE)staining and immunohistochemistry staining.The specimens were done bacterial culture.MAIN OUTCOME MEASURES:Histopathological changes.RESULTS:Wear particles,cellular proliferation and osteolytic factors were found in the limiting membrane surrounding loosening prosthesis.The bacterial culture results of the specimens were negative.CONCLUSION:Wear particles generated in the using process of prosthesis can activate osteolytic factors produced by inflammatory cells and is an important reason leading to sterile loosening of prosthesis.

Object To study the augmentation of the T activated killer (T AK) cell proliferating and tumor killing activities of the polysaccharide fraction from Rhodiola kirilowii (Regel) Regel, Lycium barbarum L., Hedysarum polybotrys Hand. Mazz., Glehnia littoralis F. Schmidt ex Miq., Rehmannia glutinosa (Gaert.) Libosch. ex Fisch. et Mey. and Aloe barbadensis Mill. in vitro. Methods The T AK cells were induced by anti CD 3 antibody (CD 3McAb) and rIL 2 from human peripheral blood mononuclear cells (PBMC). The effects of the above six plant polysaccharides (1～100 ?g/mL) on the proliferation of T AK cell, the cytotoxicity to Raji cells and L 1210 cells, and the IL 2 receptor (IL 2R) expression in T AK cells were determined. Results The six polysaccharides alone had no obvious effect on the proliferation of T AK cells. In the presence of rIL 2 and CD 3McAb, they could reinforce the proliferation of T AK cells and its tumor killing activities against Raji cells and L 1210 cells at a different extent, and a 21%～68% increase of IL 2R expression in T AK cells was observed. Conclusion The plant polysaccharides significantly enhance the proliferation and the tumoricidal activities of T AK cells and the enhancing actions related to the increase of IL 2R expression.

Objective To understand the prevalence of unsafe riding practice among electric bicycle riders,and to provide scientific basis for intervention strategies in Ma'anshan city of Anhui Province.Methods Observational method was used to observe electric bicycle riders' behavior of running red light,wearing a helmet,and manned act.The radar speed measuring instrument was used to measure the speed of electric bicycle.Results The rate of electric bicycle riders' running red light was 13.09％ (1 285/9 815),helmet wearing rate was 5.90％ (1 510/25 576),and manned rate was 20.28％ (5 187/25 576).The average speed was 24 ki/h,and the electric bicycles whose speed were ＞ 20 km/h accounted for 74.60％.There were significant differences in the running red light rate,helmet wearing rate and the average speed of travel among different time periods and dates (all P ＜ 0.05).More running the red light occurred during 13:30-14:30 and 15:00-16:00.Less helmet wearing occurred during 10:00-11:00 and 08:30-09:30.The periods with highest average speed were at07:00-08:00,08:30-09:30,11:30-12:30,and 13:30-14:30,which was 24 km/h.The helmet wearing rate of females (6.54％) was higher than that of males(5.46％),the men's average speed (24 km/h) was higher than women's (23 ki/h),and the differences were both statistically significant(all P ＜ 0.001).Conclusion The electric bicycle riders in Ma'anshan city of Anhui Province have the dangerous behavior of running red lights,not wearing a helmet,manned act and speeding.Targeted interventions should be taken to reduce the occurrence of related risk behaviors.

Objective To observe the incidence of critical illness-related corticosteroid insufficiency (CIRCI) after severe traumatic brain injury (sTBI) and investigate the relationship between CIRCI and prognosis.Methods This prospective cohort study enrolled 89 sTBI patients (68 males and 21 females;at age range of 15-80 years) hospitalized within 24 hours after sTBI from June 2014 to December 2015.The Glasgow coma scale (GCS) was ≤8 points.The causes of injury included extensive contusion of brain (44 cases),subdural hematoma (21 cases),epidural hematoma (11 cases),primary brain stem injury (8 cases) and diffuse axonal injury (5 cases).Adrenocorticotropic hormone (ACTH) stimulation tests were done within 36 hours after sTBI to identify CIRCI patients.The patients were divided into CIRCI group (50 cases) and non-CIRCI group (39 cases).Moreover,the patients were categorized into survival group (62 cases) and death group (27 cases) based on survival status.The GCS score,mechanical ventilation time,cerebral hernia,survival time and mortality within 28 days were observed in two groups.Results The incidence of CIRCI in sTBI patients was as high as 56％ (50/89).Compared with the non-CIRCI group,the CIRCI group had lower GCS [(5.3 ± 1.7) points vs.(6.1 ± 1.4) points,P ＜ 0.05],and sTBI patients with CIRCI were mechanically ventilated for a longer period of time [(9.9 ± 2.8) days vs.(7.5 ± 1.6) days,P ＜ 0.05].In comparison with non-CIRCI patients,the incidence of brain herniation in sTBI patients with CIRCI was higher (58％ vs.21％,P ＜0.01).The total fatality rate within 28 days was 30％ (27/89).The survival time of CIRCI group was significantly shorter than that of non-CIRCI group (P ＜ 0.05).The fatality rate in the CIRCI group was significantly higher than that of the non-CIRCI group [40％ (20/50) vs.18％ (7/39),P ＜0.05].The incidence of CIRCI in death group was significantly higher than that of the survival group [74％ (20/27) vs.48％ (30/62),P ＜ 0.05].Conclusions The incidence of CIRCI in STBI patients is high.The sTBI patients with CIRCI has significantly higher incidence of brain hernia,longer mechanical ventilation time,higher 28-day mortality and shorter survival time compared with non-CIRCI patients.

Objective To establish CFPAC-1 cell lines deficient in CDC25B2 by recombinant lentivirus, and to investigate the role of this gene. Methods After CFPAC-1 cells were transduced with recombinant lentivirus producing CDC25B2 siRNA, stably transduced cells with green fluorescent protein were selected by flow cytometer. The mRNA and protein expression of CDC25B2 was examined by RT-PCR and Western blot analysis. The effect of the lentivirus on the cell proliferation, cell cycle, clone-forming, migration and invasion ability was analyzed by MTr method, flow cytometer, plate clone-forming assay and Transwell chamber method respectively. Results CDC25B2 siRNA knocked down CDC25B2 expression in CFPAC-1 cells significantly. The silencing efficiency of siRNA transduction by recombinant lentivirns was very high. Proliferation, cloneforming, migration and invasion ability of human pancreatic cancer cell line CFPAC-I were significantly in-creased, while cell cycle was not affected. Conclusion CDC25 B2 plays an important role in cell proliferation, clone-forming, migration and invasion of pancreatic cancer. This research provides experimental evidences for targeting CDC25B2 in gene therapy against pancreatic cancer.

Objecfive Most prostate cancer contains two or more widely separate turnors.To study the origin of prostate cancer based on the analysis of microsatellite alteration in separate tumors from the same prostate.Methods A polymerase chain reaction (PCR) was used to examine the allelic loss pattern of 4 microsatellite polymorphic markers on chromosome 8p (D8S133,D8S136,D8S137) and 17q (D17S855) in multifocal tumors of prostate from 19 patients.DNA samples were obtained from different regions of distinctly separate tumors on single case using microdissection technique.Results The overall frequence of LOH at D8S133,D8S136,D8S137 and D17S855 for all informative cases was 74%,38%,86% and 46%respectively in 40 separate tumors of prostate from 19 patients.The pattern of allelic loss was not identical in 15 of 18 (83%) informative cases. It showed that the different regions of prostate cancer were independent origin respectively.Discordant pattern of histology was observe in distantly separate regions.whereas the same allele was consistently lost in samples from different regions of the same tumor in 3 cases. Condusion Current data supports independent origin of multiple tumors in most prostate cancer patients.

Objective To explore the relationship between the women menopausal period and metabolic syndrome (MS) .Meth-ods The female residents of Chongqing urban areas above 40 years were selected as the investigation group ,all the subjects were performed the questionnaire survey and the physical examination ,at the same time the biochemical indexes were detected .Finally , 1402 women of natural menopause were included in this study .The study subjects were divided into different groups according to the menopausal period of <5 years ,5- <10 years ,10- <15 years and ≥15 years .The Logistic regression analysis was adopted to analyze the relationship between the menopausal period with MS and its components .Results The MS prevalence in this group was 40 .87% ,and the menopausal period of the women with MS was significantly higher than that without MS (P<0 .05) .The MS prevalences of postmenopausal women in the menopause period of <5 years ,5 - <10 years ,10 - <15 years and ≥15 years were 29 .37% ,34 .29% ,45 .30% and 49 .13% respectively (P<0 .05) .After adjustment for age and BMI (except central obesity ) ,the MS risk in the menopausal period of 10- <15 years and was 1 .54 times of that in the menopausal period of <5 years .The Logis-tic regression analysis showed that BMI and menopausal period were the influence factors of MS .Conclusion Post-menopausal women are the high-risk group of MS and the menopausal period is correlated to MS .

Astract:Objective To investigate the ultrastructural changes and HSP70 expression in liver of mice after microwave irradiation with lethal dose and to explore the application of these indexes as the basis of medical identification in microwave irradiation induced death. Methods The mice were divided into the control group and the irradiation group. Mice of the irradiation group were induced death by whole body exposure to 129 W/cm2 microwave irradiation for 30 minutes. The ultrastructure of liver was observed by transmission electron micro-scope;changes of the HSP70 mRNA and protein expression in liver were detected by reverse transcription polymerase chain reaction ( RT-PCR) and Western blotting respectively. Results Liver cytoplasm was observed dissolved with points and sheets and there were mitochondri-al crest and membrane solution in the irradiation group. And the HSP70 mRNA and protein expression level increases significantly compared with the control group with statistically significant difference (P<0. 01). Conclusion Death induced by microwave irradiation could lead to liver cytoplasm dissolution, mitochondria damage, mRNA and protein expression of HSP70 up-regulation, which may be used as important diagnostic indicators of microwave irradiation induced death.

OBJECTIVETo develop an RP-HPLC method for the determination of five iridoid glycosides in Phlomis younghusbandii.

METHODHPLC analysis was performed on a Symmetry C18 (4.6 mm x 150 mm, 5 microm, Waters) column eluted with acetonitrile (A) and water (B) in gradient elution. The gradient program was as follows: 0-5 min kept 7% A; 5-10 min changed to 12% A; 10-40 min kept 12% A. The flow rate was 1.0 mL x min(-1). The column temperature was 20 degrees and the detection wavelength was 235 nm.

RESULTThe linear ranges of sesamoside, shanzhiside methyl ester, 7, 8-dehydropenstemoside, penstemoside and 8-O-acetylshanzhiside methyl ester were 0.050-0.650 (r = 0.999 3), 0.050-0.350 (r = 0.999 5), 0.040-0.280 (r = 0.999 4), 0.010-0.070 (r = 0.999 6), 0.040-0. 280 (r = 0.999 7) g x L(-1), respectively. The average recoveries (n = 6) of them were all between 96% and 104%, RSD < 5.0%.

CONCLUSIONThe method is simple, accurate, repeatable and stable, which can be used for quality control of P. younghusbandii.