Erectile dysfunction was one of the most frequently postoperative complications after radical prostatectomy,which has been deeply concentrated by patients and urologists,along with more and more people were diagnosed as localized prostate cancer.Widely being used for erectile dysfunction after radical prostatectomy,the efficacy and safety of phosphodiesterase type 5 inhibitors have been confirmed by many clinical studies.However,the influences of phosphodiesterase type 5 inhibitors on the occurrence and progression of cancer are still not completely revealed at present.Additionally,the efficiency of phosphodiesterase type 5 inhibitors on biochemical recurrence after radical prostatectomny is still controversial,though it has been demonstrated that phosphodiesterase type 5 inhibitors is not associated with the occunrence of prostate cancer based on recent clinical studies.We will review the possibly mechanisms of phosphodiesterase type 5 inhibitors in oncologic occurrence,especially in the occurrence of prostate cancer and its biochemical recurrence after radical prostatectomy.

Animals ; Hippocampus ; pathology ; physiopathology ; Male ; Motor Activity ; Rats ; Rats, Wistar

Objective To analyze the current situation of voluntary counseling and testing(VCT) and improve HIV/AIDS prevention and control in Jiangxi province.Method VCT services in the province were analyzed using descriptive methodology.Result The province is in shortage of full time VCT workers.Of the individuals receiving pre-testing counseling,those receiving post-testing counseling and receiving referral counseling accounted for 5.22% and 1.39%,respectively.The individuals receiving tests mostly were aged 20-29 years,and a little less were aged 30-39 years.Higher positive rates of HIV screening tests were found in Pingxiang and Nanchang cities,accounting for 39.13% and 26.09%,respectively.Conclusion To improve VCT service and contain the spread of HIV/AIDS in this province,it is necessary to establish VCT networks,upgrade quality of counseling service and publicize VCT and its outreach activities among target population.

Zymonomas mobilis was transformed with a polyhydroxybutyrate synthesis operon phbCAB equipped with a pdc promoter from Z. mobilis. For the first time,PHB was produced in recombinant Z.mobilis. Shake flask studies indicated that accumulation of PHB in Zymomonas mobilis increased approximately 10% ethanol productivity for the first 48h of anaerobic fermentation. After that,the PHB effect was observed as insignificant probably due to the exhaustion of the sugar.

Objective To observe the effect of Professor Deng Tietao’s Brain-strengthening Recipe 1 on learning and memory abilities of rats with vascular dementia, and to explore its molecular biology mechanism. Methods The vascular dementia rat model was established by permanent occlusion of the bilateral arteria carotis communis. Sixty male SD rats were randomly divided into 5 groups, namely sham-operation group, model group, nimodipine (5.4 mg·kg-1·d-1) group, and high-and low-dose Chinese medicine groups (57.6 and 14.4 g·kg-1·d-1, respecitvely) . After medication for 30 days, the learning and memory abilities were evaluated by Morris water maze test. The histological changes of the rat hippocampal tissues were observed after HE staining, and the mRNA expression of N-methyl-D-aspartate receptor subunit 2B ( NR2B) in rat hippocampus was measured by real-time fluorescence quantitative polymerase chain reaction (RT-PCR) . Results The water maze test results showed that the escape latency of the rats in the sham-operation group was significantly decreased on the third day, and was significantly decreased in the high-dose Chinese medicine group on the fourth day ( P<0.05 compared with the model group). The results of spatial probe test showed that the times of rats passing through the platform within 60 seconds were significantly higher in high-dose Chinese medicine group ( P<0.01compared with the model group) , but the time for rat staying at the quadrant of the platform in the other four groups did not differ from that in the model group ( P>0.05). HE staining results for the model group were presented as the absence of neural cells in hippocampus CA1 region, karyorrhexis of nerve cells, indistinctness of nuclear membrane, disappearance of nucleolus, shrinkage of nerve cells, increase of cytoplasm acidophily, and reactive hyperplasia of astrocytes. And in the hippocampal CA1 region of high- and low-dose Chinese medicine groups, the injured neural cells were found, and the lesions were slighter than those of the model group. Compared with the model group, the mRNA expression of NR2B was increased in nimodipine group and high-dose Chinese medicine group ( P<0.05) . The mRNA expression of NR2B showed a increasing trend in low-dose Chinese medicine group, but the differences were insignificant compared with that of the model group ( P>0.05). Conclusion Brain-strengthening Recipe 1 has obvious effects on improving the learning and memory abilities of vascular dementia rats, and the therapeutic mechanism is associated with reduction of the degree of neuronal damage in hippocampus and with the upregulation of the mRNA expression of NR2B.

OBJECTIVETo investigate clinical effects of arthroscopy in the treatment of medial meniscal cyst.

METHODSFrom June 2011 to January 2013, 7 patients with medial meniscal cyst were treated with arthroscopy. There were 3 males and 4 females,ranging in age from 27 to 63 years old,with a mean age of (43.93±2.10) years old. The cysts have been discovered for 3 to 30 months,with a mean time of (10.6±1.3) months. All the patients complained of knee pain,especially in the medial joint gap. The Pisani sign, Caklin sign and medial McMurray sign were all positive. Preoperative MRI examination confirmed the diagnosis. Lysholm score changes and clinical efficacy were observed through a six-month follow-up.

RESULTSThe postoperative Lysholm scores were all significantly higher than the preoperative scores. According to Sarimo standard, 6 patients got an excellent result, and 1 good.

CONCLUSIONArthroscopic treatment of medial meniscal cyst has replaced the traditional method, which could retain the normal meniscus as much as possible and repair the meniscus injury simultaneously, as well as get a good curative effect and a good recovery of knee function. This method is worthy of clinical application.

Adult ; Arthroscopy ; methods ; Cysts ; physiopathology ; surgery ; Female ; Humans ; Male ; Menisci, Tibial ; physiopathology ; surgery ; Middle Aged

Objective To investigate the effects of tagged fluid and substraction in CT virtual colonoscopy (CTVC) on the conspicuity of polyps and to confirm the optimal attenuation value and the optimal viewing window. Methods Polyps measured 3-10 mm were created in fresh porcine colon in vitro and submerged in saline and mixed with positive contrast medium for the CT values of 200 HU, 400 Hu, 600 HU, and 800 HU. Polyps were measured before and after substraction and compared with those in the control group. The effects of different viewing windows and different attenuation values on the measurement and conspicuity of polyps were analyzed. Results The optimal attenuation value of tagged fluid was 800 HU and the optimal viewing window was colon (-150 HU, 1 500 HU) and bone (500 HU, 2 500 HU). Conclusion The combination of tagged fluid and CT substraction can improve the conspicuity of small polyps covered by colonic fluid.

To explore a new way of constructing bioartificial renal tubule assist device (RAD) in vitro and its function of transporting sodium (Na(+)) and glucose and to evaluate the application of atomic force microscope in the RAD construction, rat renal tubular epithelial cell line NRK-52E was cultured in vitro, seeded onto the outer surfaces of hollow fibers in a bioreactor, and then cultured for two weeks to construct RAD. Bioreactor hollow fibers without NRK-52E cells were used as control. The morphologies of attached cells were observed with scanning electron microscope, and the junctions of cells and polysulfone membrane were observed with atomic force microscope. Transportation of Na(+) and glucose was measured. Oubaine and phlorizin were used to inhibit the transporting property. The results showed that NRK-52E cells and polysulfone membrane were closely linked, as observed under atomic force microscope. After exposure to oubaine and phlorizin, transporting rates of Na(+) and glucose were decreased significantly in the RAD group as compared with that in the control group (P<0.01). Furthermore, when the inhibitors were removed, transportation of Na(+) and glucose was restored. It is concluded that a new RAD was constructed successfully in vitro, and it is able to selectively transport Na(+) and glucose.

To explore the protective effect of sodium tanshinone IIA sulfonate (STS) on microcirculatory disturbance of small intestine in rats with sepsis, and the possible mechanism, a rat model of sepsis was induced by cecal ligation and puncture (CLP). Rats were randomly divided into 3 groups: sham operated group (S), sepsis group (CLP) and STS treatment group (STS). STS (1 mg/kg) was slowly injected through the right external jugular vein after CLP. The histopathologic changes in the intestinal tissue and changes of mesenteric microcirculation were observed. The levels of tumor necrosis factor-α (TNF-α) in the intestinal tissue were determined by using enzyme-linked immunoabsorbent assay (ELISA). The expression of intercellular adhesion molecule-1 (ICAM-1) in the intestinal tissue was detected by using immunohistochemisty and Western blot, that of nuclear factor κB (NF-κB) and tissue factor (TF) by using Western blot, and the levels of NF-κB mRNA expression by using RT-PCR respectively. The microcirculatory disturbance of the intestine was aggravated after CLP. The injury of the intestinal tissues was obviously aggravated in CLP group as compared with S group. The expression levels of NF-κB p65, ICAM-1, TF and TNF-α were upregulaed after CLP (P<0.01). STS post-treatment could ameliorate the microcirculatory disturbance, attenuate the injury of the intestinal tissues induced by CLP, and decrease the levels of NF-κB, ICAM-1, TF and TNF-α (P<0.01). It is suggested that STS can ameliorate the microcirculatory disturbance of the small intestine in rats with sepsis, and the mechanism may be associated with the inhibition of inflammatory responses and amelioration of coagulation abnormality.

Background Many studies and clinical trials of pharmacologic vitreolysis are already under way to try to improve vitreo-retinal surgery and to liquefy and detach the vitreous from the retina ultimately, including chondroitinase,hyaluronidase,dispase and plasmin. However, there has not been any report on purification of human plasminogen from cord blood plasma and inducing posterior vitreous detachment of the animal eye at present.Objective This study was designed to isolate and purify the production of human plasminogen (Plg) from cord blood plasma with ethanol precipitation and evaluate the efficacy of Plg in inducing posterior vitreous detachment (PVD).Methods Human Plg was Separated and purified from cord blood plasma by ethanol precipitation method. The protein band corresponding to Plg with molecular mass of 92 000 was revealed in SDS-PAGE and confirmed by MALDI-TOF and Mascot database. Anion-exchange chromatography and plasminogen activity assay kit were used to obtain purified Plg with biological activity. Twenty-five fresh pig eyes were enucleated and assigned to 5 groups and 5 eyes for each group. The normal eyes were used as control group. Balanced salt solution(BSS)of 0.1 ml was intravitreally group and standard substance group. All of the eyes were then incubatedfor 60 minutes under the 37 ℃. Retinal histopathology and ultrastructure were examined under the light microscopy, scanning electron microscopy ( SEM ) and transmission electron microscopy (TEM). Results The Plg with potential fibrinolytic activity was successfully extracted and purified from cord blood plasma by ethanol precipitation method. No posterior vitreous detachment (PVD) was seen in normal control group, BSS group and r-SK group following the intravitreal injection under the sem. However,PVD was demonstrated in r-SK+ Plg group and standard substance group under the SEM. The inner limiting membrane ( ILM ) and the retina were well preserved in all of the experimental eyes. No retinal morphology and ultrastructural abnormality were found under the light and SEM and TEM. Conclusion Ethanol precipitation is a feasible way to isolate and purify Plg from human cord blood plasma. Extracted Plg shows potential fibrinolytic intravitreal injection of Plg.