Objective:To explore the regulatory effect of Hsf 1 on PLC/PRF5 hepatoma cells proliferation.Methods: By shRNA gene silencing technology ,constructed PLC/PRF5 hepatoma cell line of Hsf 1 gene silencing.To detect the expression of Hsf 1, p53 and Rb proteins in PLC/PRF5 hepatoma cells by Western blot.The proliferation of PLC/PRF5 cell line was observed by methylthiazolyl tetrazolium assay ( MTT ) , plate clone formation assay ( PCFA ) and cell cycle assay.Results: shRNA-Hsf1 could significantly inhibit the expression of Hsf 1 in PLC/PRF5 cells.It could induce PLC/PRF5 cells stopping at G1 phase of cell cycle , inhibit cell proliferation and colonal formation;silencing Hsf1 caused up-regulation of p53 and Rb proteins expression in PLC/PRF5 cells.Conclusion: Silencing Hsf1 is involved in up-regulation of p53 and Rb proteins expression , which results in inhibiting proliferation of PLC/PRF5 hepatoma cells.

Objective To investigate the effect of a newly developed photosensitizer—chlorophyll derivative combined with irradiation of 650 nm laser for PC3, an androgen independent cell line in vitro. Methods PC3 was cultured and designed to 4 groups,including blank control,laser irradiation,medication of photosensitizer and medication of photosensitizer with laser irradiation (treated).The medicated concentration of chlorophyll was 0.1 g/L and irradation fluence of 650 nm semiconductor laser was 6 J/cm2.Intracellular distribution of photosensitizer and cellular morphological alterations were studied through light microscopy, electron microscopy and laser confocal microscopy. Results It showed the shrinkage, round-up and membrane integrity of treated PC3 under light microscopy.Sable deposits were observed in cytoplasm of cells in both photosensitizer and treated groups.Transmission electron microscopy showed the fragmentation of DNA and condensation of chromatin beneath the karyolemma in treated cells.In cytoplasm,the endoplasmic reticulum and mitochondria swell to form vesicles and vacuoles.It showed the strong red fluorescence in the cytoplasm of treat cells compared with the red fluorescence indifferent to the background through laser confocal microscopy. Conclusions Chlorophyll derivative based photodynamic therapy is able to induce apoptosis of PC3 in vitro.Mitochondria is presumed to be the primary target of photodynamic therapy and trigger the apoptotic pathway.

Objective To study the clinical effects of treating radiodermatis with acupoint massage and wet compress of Chinese medicine. Methods 104 patients with radiodermatis were randomly recruited into a control group and a treatment group, with 52 patients in each group. The treatment group was treated with acupoint massage plus wet compress of chiense medicines; with the treatment group was externally applied with Kangbao Shaoshang moistening ointment. The result was compared after the treatment. Results The time for easement of pain in the treatment group was obvious reduced than the control group after the treatment. The total effective rate was 96.1% and 57.69% in the treatment group and the control group respectively, the difference showing statistical significance (χ2=27.3, P＜0.01). Conclusion It was effective to treat radiodermatitis with acupoint massage and wet compress of Chinese medicine.

Objective To evaluate the incidence of liver dysfunction and the relevant treatment in patients with prostate cancer with combined androgen blockade. Methods Twenty three patients (mean age,73 years;range,63-80 years) with histologically confirmed prostate cancer showed liver dysfunction during the course of combined blockade with bilateral orchiectomy and flutamide at a dose of 250 mg,3 times per day.After 6.2 months of therapy, ALT level was increased from pre treatment of (37?7.2)U/L to (63.5?7.53)U/L in 17 patients without jaundice and (87.2?7.34)U/L in 6 patients with jaundice.In the 17 patients without jaundice,herbal medicines were used together with vitamin C and vitamin B complex for 1-2 months (first line therapy).In the 6 severely disordered patients,flutamide was stopped, while glucurolactone at a dose of 1.2 g and (or) TAD of 0.6-1.2 g were administered intravenously per day for 4 weeks (second line therapy).Liver function was monitored every week. Results The 17 patients with mild liver dysfunction recovered after application of first line therapy for 1-2 months.The other 6 patients with relatively severe dysfunction had recovery or improvement with additional second line therapy.Of these patients,4 died of hepatic metastases after 2.1 years. Conclusions It is necessary to monitor liver function during the course of combined androgen blockade and to adopt liver protecting therapy for patients with prostate cancer who previously had hepatitis.

Background and purpose:Carcinoma of the kidney is the most common malignant renal parenchymal carcinoma;its biological behavior is extremely complicated and is not sensitive to radiotherapy and chemotherapy.Studies have shown that the hypoxia-inducible factor HIF1-? and HIF2-? are related to the occurrence and development process of the clear-cell carcinoma of kidney.So,we intend to construct psilencer3.0-HIF-? siRNA recombinant plasmid in this study through RNA interference method,thereby providing an effective tool for further exploration of the role of HIF in the occurrence and development of clear-cell carcinoma of kidney.Methods:Design and chemically synthesize the DNA fragments of coding HIF-1? and HIF-2? siRNA and make them up into siRNA expression vector through gene recombination.Adopting the real-time quantitative PCR and Western blot tested the inhibitive effect of the constructed siRNA expression vector on mRNA and protein levels on the target gene expression.Results:After 786-0 cells transfecting with psilencer3.0-HIF-1?siRNA and psilencer3.0-HIF-2?,the inhibitory rate of mRNA expression of HIF-1? and HIF-2? reached 82.1% and 87.4% respectively,and OS-RC-2 cells transfecting psilencer3.0-HIF-1? siRNA and psilencer3.0-HIF-2?,the inhibition rate reached 91.2% and 81.2% respectively.The protein expression of the experimental group with 786-0 cells and OS-RC-2 cells transfecting HIF-1? interference plasmid and HIF-2? interference plasmid were lower at different levels than that from the blank control group.Conclusions:The constructed siRNA expression vector can effectively inhibit the expression of target gene HIF-1 and HIF-2 at mRNA and protein levels.

Pigment epithelium-derived factor (PEDF) is an antiangiogenic factor which is effective in tumour inhibition in a variety of tumours and has not yet been studied in bladder tumour before. In this study the expression of PEDF, interleukin-1α (IL-1α) and -8 (IL-8) in bladder tumours was investigated. Immunohistochemistry was performed on 64 bladder tumour and 23 normal uroepithelium samples. Expression change of the factors was compared with clinicopathological parameters. Correlations between PEDF, IL-1α and IL-8 were analyzed. None of the factors was in relation to gender, tumour occurrence, and size or onset pattern. PEDF (P=0.014) and IL-1α (P=0.049) expression was down-regulated with grade progression. PEDF expression was lower in normal uroepithelium than in papillary urothelial neoplasm of low malignant potential (PUNLMP) (P=0.000) and carcinoma (P=0.009) whilst IL-1α (P=0.000 and P=0.000 respectively) and IL-8 (P=0.000 and P=0.023 respectively) expression was higher in the same grouping. PEDF expression had a negative correlation with IL-8 in PUNLMP (P=0.049, r=-0.578) as well as in tumour grouping (P=0.033, r=-0.276). Deranged expressional change of PEDF, IL-1α and IL-8 could be in relation to loss of differentiation from normal uroepithelium to papillary lesion and eventually to carcinoma.

Objective:To study the pharmacokinetics,thissue distribution and secretion of nerve growth factor(NGF)in mice.Methods:The conecntration of NGF in various body fluids and tissue were determined by isotope tracer combined SDSPAGE method.Results:The plasma concenmtration-time curve was in accordance with the two-compartment pharmacokinetic model.The elimation half-life(t1/2β)was 3.1.The half-life of distribution(t1/2ka)was 5min.Tpeak was 25 min.AUC was 72.4 mg·kg-1·h-1.The concentrations of NGF were high in thyroid,blood,submaxillary glands,superior cervical ganglion,adrenasl and kidneys.Conclusion:NGF has a wide distribution,high tissue concentrationa nd excrtet mainly through the urine.

Objective To compare the diagnostic efficacy and complications of transperineal prostate biopsy for<10 cores biopsy vs≥10 cores biopsy. Methods Nine hundred transrectal ul-trasound-guided transperineal prostate biopsies were performed. Patients were divided into 2 groups, <10 cores group and ≥10 cores group. Patient numbers of the 2 groups were 759 and 141, respec-tively. Cancer positive rate and complications were compared between the 2 groups retrospectively. Results Cancer positive rates were 41.6%(316/759) and 51.8%(73/141) in 2 groups (P<0.05). In patients of PSA≤10.0 ng/ml, cancer positive rates were 6.8% (16/235) and 17.8% (8/45) in 2 groups (P<0.05). Gross hematuria was the most common complication associated with biopsy. There was no statistical difference between the 2 groups in post-biopsy gross hematuria rate. Conclu-sions The diagnostic efficacy is higher in≥10 cores prostate biopsy than that in <10 cores prostate biopsy, There is no difference in biopsy related complications regarding biopsy core numbers.

OBJECTIVETo determine the feasibility of single dose intravesical epirubicin in the prevention of recurrent superficial bladder carcinoma.

METHODSWe compared the effect of intravesical epirubicin or mitomycin C on tumor recurrence and disease free interval and their side effects after treatment of superficial bladder tumor. 47 postoperative patients with stages Ta to T1 primary superficial bladder carcinoma of grades 1 or 2 were randomized into groups A: single 80 mg epirubicin; B: 40 mg consecutive epirubicin; C: 40 mg consecutive mitomycin C. Patients were followed up for clinical, analytical, and cystoscopic evaluations every 3 months.

RESULTSThe disease free intervals of the three groups were found no significant differences (F = 3.25, P > 0.05). The recurrence rate was 6.25% (1/16), 13.3% (2/15), 12.5% (2/16) (chi(2) = 0.496, P > 0.05) in groups A, B, and C at 1 year, and 33.3% (5/15), 26.7% (4/15), 25% (4/16) (chi(2) = 0.290, P > 0.05) at 3 years after operation, respectively. Side effects of group A (13.3%) were lower than those of group B (46.7%) or C (43.8%) (chi(2) = 14.56, P < 0.01).

CONCLUSIONSSingle dose of epirubicin given intravesically immediately after tumor resection is effective in preventing tumor recurrence.

Aged ; Antibiotics, Antineoplastic ; adverse effects ; therapeutic use ; Epirubicin ; adverse effects ; therapeutic use ; Feasibility Studies ; Female ; Humans ; Male ; Middle Aged ; Neoplasm Recurrence, Local ; prevention & control ; Urinary Bladder Neoplasms ; prevention & control

Objective To examine whether Tim-3 plays a protective role in paraquat poisoning induced excessive immune response and tissue damage based on the critical roles of Tim-3 controlling inflammatory response.Methods A paraquat poisoning model was established in wild type and in Tim-3 transgenic C57BL/6 mice by intraperitoneal injection of paraquat (40 mg/kg) .In addition, C57BL/6 mice with paraquat poisoning were injected with Tim-3 soluble protein( sTim-3) or control protein to see the effect of Tim-3 blocking on the progression of paraquat poisoning.Samples were collected at 6 and 24 h after paraquat injection respectively and were examined for tissue damage, cytokine expression and paraquat metabolism.Results After paraquat poisoning, there was significantly attenuated tissue damage in the lungs and kidneys and decreased TNF-α,IL-6 and IL-1 beta expression in the PBMCs or in the serum from Tim-3 transgenic mice compared to wild type mice.The serum concentration of paraquat in Tim-3 transgenic mice was also significantly decreased.However, in sTim-3 treated paraquat poisoning mice, there was significantly increased cytokine expression and tissue damage compared to control protein treated mice.The in vitro data showed that Tim-3 signaling negatively regulated macrophages mediated inflammatory response.Conclusion Tim-3 plays a critical role in maintaining the homeostasis after paraquat poisoning. Further investigation on the regulatory roles of Tim-3 in inflammation will shed new light on the pathogenesis of paraquat poisoning and provide new therapeutic strategies.