Objective For purpose of meeting the requirement of forensic toxicological investigation, a RPHPLC method was established for simultaneous determining lidocaine and bupivacaine in human spinal cord pretreated with formaldehyde. Method Analytical column was YWG-C18 (4.6mm?150mm) and a per column. Mobile phase was CH3OH:0.015M NaH2PO4 =75:25 (v/v) pH = 7.2. The wavelength of detection was 210 nm. The pretreatment method of sample, detection condition, linear range, precision and recorery of the method were systematically investigated by using blank spinal cord spiked with standard lidocaine and bupivacaine. Results The linear range was 0.5 ~ 10.0?g.g-1 (lidocaine: r=0.9999; bupivacaine: r = 0.9998). The detection limit of lidocaine was 15ng and of bupivacaine 20ng (S/N≥3). The intra and inter day precision of assay of lidocaine and bupivacaine were less than 4.3% (n=5). Both lidocaine and bupivacaine have been detected in a forensic toxicological analysis case by using this method and the result was correct. Conclusion Lidocaine and bupivacaine can determined in human spinal cord pretreat-edwith formaldehyde by HPLC. The method is simple, useful and accurate. It can be applied in the forensic toxicological analysis investigation and other medical studies.

ObjectiveTo observe the expression of 67 - KD laminin receptor (67 - KD LN -R) in human laryngeal squamous carcinoma cells and to analyse the correlation between its expressionand clinicopathological characters. MethodsWe examined the expression of 67 - KD LN - R in 30primary laryngeal squamous carcinomas and in 3 cervical metastatic lymph nodes by the immunohistoche-mical SP method on paraffin- embedded sections. ResultsThe positive rate of 67 - KD LN - R inthe primary site of laryngeal squamous carcinomas was 56.7 % (17/30). The immunoreactivity in 3 cer-vical metastatic lymph nodes was consistent with that in primary tumors. There was a significant corre-lation between the level of 67 - KD LN - R and the degree of tumor differentiation, the level being high-er in poorly differentiated tumors ( P<0.05). The level of 67 - KD LN - R in laryngeal squamous car-cinomas with cervical lymph node metastases was higher than that in those without cervical lymph nodemetastases ( P <0.05).Conclusion67 - KD LN - R plays an important role in the differentiation,proliferation, invasiveness and metastasis of laryngeal squamous carcinoma.

Objective To understand the effect of vanadium to liver ultramicro structure in SD rats.Methods One hundred and fifty generaMevel SD rats of 2 months were randomly divided into control groups,30 in each,the males and females were equivalent,treated with ammonium metavanadate at doses of 0,10,20,40,60 mg/L through drinking water.After 2,6 and 10 weeks of treatment,6 rats from each group were weighed and the changes of ultramicro-structure in the liver were examined with electron microscope.Results As the increasing of dose,the increase in body weight showed a downward trend,but the coefficient of liver showed a increasing trend,the consistent performance was seen in male and female rat.After two weeks of exposure,the rats acted,ate and drank less,hair roughing and no shining,often getting together were seen.After 10 weeks,the rats had not the basic activities,the hair was disheveled and loose,some died,the structure of mitochondria and endoplasmic reticulum was normal in the 10,20,40 mg/L group,the number of endoplasmic reticulum increased,in 60 mg/L group,the rough endoplasmic reticulum vanished,the liver cytoplasm had a swelling phenomenon,the mitochondria reduced.Conclusion Vanadium have little effect on the liver cells of rats in low exposure level,but high level exposure may damage the liver cells in rats.

Adolescent ; Antigens, CD34 ; metabolism ; Bone Neoplasms ; diagnostic imaging ; metabolism ; pathology ; Chondrosarcoma, Mesenchymal ; metabolism ; pathology ; Diagnosis, Differential ; Hemangiopericytoma ; diagnostic imaging ; metabolism ; pathology ; Humans ; Male ; Platelet Endothelial Cell Adhesion Molecule-1 ; metabolism ; Sarcoma, Synovial ; metabolism ; pathology ; Tomography, X-Ray Computed ; Vimentin ; metabolism

Drug therapy is one of the efficient methods for prostate cancer treatment. However, drug resistance greatly hindered the treatment of prostate cancer patients. Herein, the mechanisms of drug resistance in prostate cancer have been exhaustively reviewed, and that can provide an alternative strategy and new targets for anti-prostate cancer therapy.
Drug Resistance, Neoplasm ; Humans ; Male ; Prostatic Neoplasms ; drug therapy

OBJECTIVETo investigate the influence of the DNA integrity of optimized sperm on the embryonic development and clinical outcomes of in vitro fertilization and embryo transfer (IVF-ET).

METHODSThis study included 605 cycles of conventional IVF-ET for pure oviductal infertility performed from January 1, 2013 to December 31, 2014. On the day of retrieval, we examined the DNA integrity of the sperm using the sperm chromatin dispersion method. According to the ROC curve and Youden index, we grouped the cycles based on the sperm DNA fragmentation index (DFI) threshold value for predicting implantation failure, early miscarriage, and fertilization failure, followed by analysis of the correlation between DFI and the outcomes of IVF-ET.

RESULTSAccording to the DFI threshold values obtained, the 605 cycles fell into four groups (DFI value < 5%, 5-10%, 10-15%, and ≥ 15%). Statistically significant differences were observed among the four groups in the rates of fertilization, cleavage, high-quality embryo, implantation, clinical pregnancy, early miscarriage, and live birth (P < 0.05), but not in the rates of multiple pregnancy, premature birth, and low birth weight (P > 0.05). DFI was found to be correlated negatively with the rates of fertilization (r = -0.32, P < 0.01), cleavage (r = -0.19, P < 0.01), high-quality embryo (r = -0.40, P < 0.01), clinical pregnancy (r = -0.20, P < 0.01), and live birth (r = -0.09 P = 0.04), positively with the rate of early miscarriage (r = 0.23, P < 0.01), but not with the rates of multiple pregnancy (r = -0.01, P = 0.83), premature birth (r = 0.04, P = 0.54), and low birth weight (r = 0.03, P = 0.62).

CONCLUSIONThe DNA integrity of optimized sperm influences fertilization, embryonic development, early miscarriage, and live birth of IVF-ET, but its correlation with premature birth and low birth weight has to be further studied.

Abortion, Spontaneous ; Chromatin ; ultrastructure ; DNA Fragmentation ; Embryo Implantation ; Embryo Transfer ; Embryonic Development ; Female ; Fertilization ; Fertilization in Vitro ; Humans ; Infertility, Female ; Male ; Pregnancy ; Pregnancy Outcome ; ROC Curve ; Spermatozoa ; cytology

Objective To explore the change of serum osteopontin levels in preoperative and postoperative patients with non-small cell lung cancer (NSCLC) and its clinic significance.Methods The levels of serum osteopontin were detected by ELISA.Results In 88 NSCLC patients,serum osteopontin levels were significantly higher than in benign pulmonary disease and healthy control group(P＜0.05.P＜0.01.respectively) There was no difference between benign pulmonary disease and healthy control group(P＞0.05).Serum osteopontin levels were related to clinical stage and lymph node metastasis,and the levels of serum osteopontin were lower in postoperative patients than in preoperative cases(P＜0.05).For NSCLC.the detection of osteopontin had a sensitivity of 84.1%,a specificity of 92.5%,and an accuracy of 88.1%. Conclusion Increased serum levels of osteopontin may be useful as a helpful clinical biomarker to diagnose earlier,predict prognosis and differentiate from benign pulmonary disease.

OBJECTIVETo investigate the values of the sperm deformity index (SDI), acrosome abnormity rate (AAR), and DNA fragmentation index (DFI) of optimized sperm in the prediction of fertilization failure (fertilization rate < 25%) in conventional in vitro fertilization (IVF).

METHODSWe selected 695 cycles of conventional IVF for pure oviductal infertility in this study, including 603 cycles of normal fertilization and 92 cycles of fertilization failure. On the day of oocyte retrieval, we examined sperm morphology, acrosome morphology, and DNA fragmentation using the Diff-Quik, PSA-FITC and SCD methods. We established the joint predictor (JP) by logistic equation and analyzed the values of different parameters in predicting fertilization failure with the receiver operating characteristic (ROC) curve.

RESULTSThe fertilization rate was negatively correlated with SDI (r = - 0.07; P = 0.03), AAR (r = -0.49; P < 0.01), and DFI (r = -0. 21; P < 0.01). The SDI, AAR, and DFI in the normal fertilization group were 1.24 ± 0.20, (7.75 ± 2.28)%, and (7.87 ± 3.15)%, and those in the fertilization failure group were 1.42 ± 0.15, (12.02 ± 3.06)%, and (13.32 ± 4.13)%, respectively, all with statistically significant differences between the two groups (P < 0.05). SDI, AAR, and DFI were all risk factors of fertilization failure ( OR = 2.68, 14.11, and 3.85; P = 0.01, < 0.01, and < 0.01). The areas under the ROC curves for SDI, AAR, DFI, and JP were 0.651 ± 0.033, 0.895 ± 0.019, 0.789 ± 0.022, and 0.915 ± 0.017, respectively. According to the Youden index, the optimal cut-off values of SDI, AAR, and DFI obtained for the prediction of fertilization failure were approximately 1.45, 10%, and 12%.

CONCLUSIONThe SDI, AAR and DFI of optimized sperm are closely associated with the fertilization rate, and all have the value for predicting fertilization failure in IVF. The AAR is more valuable than the other single predictors, but JP is more effective than the AAR.

Acrosome ; Area Under Curve ; DNA Fragmentation ; Fertilization ; Fertilization in Vitro ; methods ; statistics & numerical data ; Humans ; Male ; ROC Curve ; Risk Factors ; Spermatozoa ; abnormalities ; ultrastructure

Objective To explore the effects of hyperglycemia and oxidized low density lipoprotein (ox-LDL) on the differentiation of macrophage derived THP-1 monocytes. Methods THP-1 human monocytic leukemia cell line was cultured in vitro, and the differentiation of THP-1 cells into macrophages was induced by phorbol esters. The macrophages were then incubated with the absence of D-glucose and ox-LDL (control group), 30 mmol/L D-glucose (hyperglycemia group), 100 μg/mL ox-LDL (ox-LDL group) or 30 mmol/L D-glucose and 100 μg/mL ox-LDL(G-ox-LDL group) for 24 h. High performance liquid chromatography was used for qualitative and quantitative analysis of intracellular cholesterol and cholesteryl esters. Both light microscope with red oil O staining technique and transmission electron microscope were employed to observe the morphology of treated and control THP-1 cells. Results A large number of intracellular red oil O stained granules and lipid vacuoles were observed in ox-LDL group and G-ox-LDL group, the contents of total cholesterol and cholesteryl esters were significantly higher than those of control group (P<0.05), and the contents of cholesteryl esters were higher than 50% of total cholesterol in both groups. However, only a few intracellular red oil O stained granules and lipid vacuoles were observed in control group and hyperglycemia group, there was no significant difference in the contents of total cholesterol and choleateryl esters between control group and hyperglycemia group (P>0.05), and the contents of cholesteryl esters were less than 50% of total cholesterol in both groups. Conclusion Foam cells form when THP-1 cells are incubated with ox-LDL, while hyperglycemia alone can not convert THP-1 cells to foam cells, indicating that ox-LDL is necessary for the macrophages derived THP-1 monocytes to turn into foam cells.

Objective To evaluate the nutritional status of iodine of pregnant and lactating women in coastal and inland areas of Zhejiang province,and to provide scientific basis for iodine supplementation.Methods In 2009,five coastal cities,five coastal counties and three inland areas from Zhejiang province were selected by the cluster sampling method,and one sub-district(township) was randomly selected in each city (county),then one community (village) was randomly selected in each sub-district (township).Thirty pregnant women,thirty lactating women and fifty children aged 8 - 10,were randomly selected in each community(village) as the investigation objects to collect instant urine samples to detect urine iodine,and to collect thirty resident edible salt and some water samples to detect salt iodine and water iodine,if the numbers of water source were more than 5 then 1 water sample was collected by their location of east,south,west,north and center in each community(village),otherwise,the numbers of water samples collected were equal to the number of community (village).Results The medians of salt iodine of coastal city,coastal county and inland area were 28.42,25.29,and 33.24 mg/kg,respectively,and the medians of water iodine correspondingly were 5.41,11.52,and 2.80 μg/L,respectively.The medians of urinary iodine of pregnant and lactating women in Zhejiang province were 148.72 and 161.34 μg/L,respectively,which were less than that of children aged 8 - 10(231.02 μg/L,Z =8.57,8.24,all P ＜ 0.017).The medians of urinary iodine in pregnant women from different areas were ranked in order as inland areas(211.42 μg/L),coastal counties (150.51 μg/L) and coastal cities (123.33 μg/L,Z =2.80,5.31,2.42,all P ＜ 0.017),and in lactating women,the medians of urinary iodine in inland areas( 197.43 μg/L) was higher than that in coastal cities( 139.64 μg/L,Z =4.03,P ＜ 0.017).Conclusions The overall levels of iodine nutrition in lactating and pregnant women in Zhejiang province are in the appropriate level,but that of the pregnant women in the coastal cities is inadequate.