Objective To investigate the expression of six-transmembrane epithelial antigen of the prostate (STEAP) in prostate cancer and its relationship with prostate specific antigen (PSA).Methods A retrospective analysis was performed of 65 consecutive patients verified for prostate canc-er by prostate biopsy or post-operational pathological examination.The clinical stage was classified ac-cording to TNM system and the pathological grade was classified according to Gleason score.STEAP expression in 65 prostate cancer samples (T1 9,T2 14,T3 17,T4 25;high differentiation 37,moder-ate differentiation 12 and low differentiation 16) was studied by using STEAP monoclonal antibody (Santa Cruz Biotech,USA) and SP immunohistochemical staining.Positive staining gray values were introduced to describe the intensity of STEAP expression.STEAP expression level was analyzed with respect to stage,grade,serum total PSA and free/total PSA (f/t PSA) ratio respectively.Results The serum total PSA concentration and f/t PSA ratio in all cases was (27.65±8.34) ng/ml and 0.15～0.04 respectively.STEAP was positively stained in 63 patients (T1 7,T2 14,T3 17,T4 25; high differentiation 37,moderate differentiation 11 and low differentiation 15).The mean STEAP-positive staining gray values in stage T1,T2,T3 and T4 of prostate cancer were 26.8%,45.6%,62.3% and 76.5%,respectively and in high,moderate and low differentiation group were 71.2%,52.8%,and 34.4% respectively.The positive staining gray values of STEAP expression was posi-tively correlated to the clinical stage of cancer and negatively correlated to the Gleason score and the ratio of f/t PSA (P<0.01,respectively).There was no significant relationship between STEAP ex-pression and serum total PSA concentration (P>0.05).Conclusion STEAP expression may act as one of new markers to the invasion degree and pathological grade of prostate cancer.

To observe the analgesic effect of Jiedu Tuoyin Decoction (JTD) and its influence on reproduction of morphine dependence rats. JTD is composed of Rhizoma Coptidis, Radix Rehmanniae, Radix Aconiti, Radix Astragali, Radix Codonopsis, Ramulus Uncariae cum Uncis, etc..Sixty rats were randomly allocated to six groups: normal saline group (Group A), morphine and normal saline group (Group B), morphine and clonidine group(Group C),morphine and low dosage of JTD group (Group D), morphine and moderate dosage of JTD group (Group E) and morphine and high dosage of JTD group (Group F).Content of ? endophin(? EP) in hypothalamus and plasma, substance P (SP) content in ganglion nodosum(GN) and nucleus tractus solitarii(NTS) and serum levels of sexual hormones were examined.(1) ? EP content in hypothalamus of morphine dependence rats was lower and SP content in ganglion nodosum and nucleus tractus solitarii was higher than that of normal rats (P

HPLC-RID and HPIC-CD methods were established for the determination of sucrose octasulfate content in irinotecan hydrochloride liposomes for injection. HPLC-RID: This method was performed on a Kromasil 100-5-NH₂ column (250 mm×4.6 mm, 5 μm) with a mobile phase of 0.8 mol·L^-1 ammonium sulfate buffer (pH 3.5)-acetonitrile (83∶17). The flow rate, column temperature and detector temperature were maintained at 1 mL·min^-1, 30 ℃ and 30 ℃ respectively. HPIC-CD: This method was performed on an anion exchange column Dionex InPac^TM AS11-HC (250 mm×4 mm, 9 μm) with an eluent of 30 mmol·L^-1 sodium hydroxide solution. The flow rate was 1.5 mL·min^-1, the column temperature was 30 ℃ and the detector temperature was 35 ℃. The HPLC-RID method and HPIC-CD method were validated with respects to specificity, limit of detection, limit of quantitation, linearity, precision, accuracy, stability and robustness and met the validation requirements. There were no significant differences between the HPIC-CD and HPLC-RID methods according to T-test analysis, both of which were applicable for the measurement of sucrose octasulfate concentration in irinotecan hydrochloride liposomes for injection. However, the HPLC-CD was better at the following aspects: higher detection sensitivity, simpler sample pretreatment, lower time and money spent, better environmental protection.