Low-concentration hydrogen peroxide solution for continuous bladder irrigation after transurethral resection of the prostate / 中华男科学杂志

<p><b>Objective</b>To evaluate the effectiveness and safety of low-concentration hydrogen peroxide solution (HPS) for continuous bladder irrigation after transurethral resection of the prostate (TURP).</p><p><b>METHODS</b>We retrospectively analyzed the clinical data about 148 cases of benign prostatic hyperplasia (BPH) treated by TURP from January 2013 to January 2016. Seventy-six of the patients received postoperative continuous bladder irrigation with 0.15% HPS (group A) and the other 72 with normal saline (group B). We compared the two groups of patients in their postoperative hemoglobin (Hb) levels, duration of bladder irrigation, frequency of catheter blockage, time of catheterization, and length of hospital stay.</p><p><b>RESULTS</b>There were no statistically significant differences between the two groups of patients preoperatively in the prostate volume, International Prostate Symptoms Score, maximum urinary flow rate, postvoid residual urine, or levels of serum PSA and Hb (P > 0.05). At 48 hours after operation, a significantly less reduction was observed in the Hb level in group A than in group B (［3.38 ± 2.56］ vs ［7.29 ± 6.58］ g/L, P < 0.01). The patients of group A, in comparison with those of group B, also showed remarkably shorter duration of postoperative bladder irrigation (［32.57 ± 5.99］ vs ［46.10 ± 8.79］ h, P < 0.01), lower rate of catheter blockage (3.3% vs 11.8%, P < 0.01), shorter time of catheterization (［3.74 ± 0.79］ vs ［4.79 ± 0.93］ d, P < 0.01), and fewer days of postoperative hospital stay (［4.22 ± 0.81］ vs ［4.67 ± 0.88］ d, P < 0.01).</p><p><b>CONCLUSIONS</b>Low-concentration HPS for continuous bladder irrigation after TURP can reduce blood loss, catheter blockage, bladder irrigation duration, catheterization time, and hospital stay, and therefore deserves a wide clinical application.</p>

Inhibition of stromal interaction molecule 1 and the expression of apoptosis-related proteins in prostate cancer PC-3 cells / 中华男科学杂志

<p><b>OBJECTIVE</b>To explore the effects of stromal interaction molecule 1 (STIM1) on the expression of apoptosis-related proteins in prostate cancer PC-3 cells.</p><p><b>METHODS</b>We transfected the lentivirus vector STIM1-pGCSIL-GFP carrying STIM shRNA into human hormone-independent prostate cancer PC-3 cells, and 3 days later observed the transfection efficiency by fluorescence microscopy. At 7 days after transfection, we determined the expression of STIM1 in the PC-3 cells by RT-PCR and Western blot and those of apoptosis-related proteins Bcl-2, Bax, survivin and activated Caspase-3 by Western blot.</p><p><b>RESULTS</b>At 3 days, inverted microscopy revealed a transfection efficiency of > 80%. At 7 days, the STIM1 expression was significantly inhibited at both mRNA and protein levels. The Bcl-2/Bax rate was remarkably decreased as compared with that of the control group (0. 31 vs 1.24 ) , and the survivin expression was markedly reduced, 0. 14 times that of the relative expression in the control. However, the Caspase-3 cleavage was significantly activated, 1.52 times that of the control (P <0.05).</p><p><b>CONCLUSION</b>STIM1 can be regarded as an oncogene in prostate cancer PC-3 cells. Inhibition of its expression can induce PC-3 cell apoptosis by reducing the Bcl-2/Bax rate, decreasing the survivin expression, and activating the Caspase-3 pathway.</p>

Evaluation of 80-W and 120-W GreenLight laser vaporization for benign prostatic hyperplasia in high-risk patients / 中华男科学杂志

<p><b>OBJECTIVE</b>To investigate and compare the effectiveness and safety of 80-W GreenLight laser vaporization and GreenLight high-performance system (HPS) 120-W laser vaporization for the treatment of benign prostatic hyperplasia (BPH) in high-risk patients.</p><p><b>METHODS</b>We allocated 290 high-risk patients with BPH to two groups to receive 80-W (n = 220) and HPS 120-W GreenLight laser vaporization (n = 70). We recorded and compared the pre-, intra- and post-operative clinical data of the two groups.</p><p><b>RESULTS</b>The operations were successful in both of the groups. There were statistically significant differences in the prostate volume, IPSS, Qmax and PVR before and after surgery (P < 0.01), but not between the two groups (P > 0.05). The operation time, lasing time and energy consumption were (56.5 +/- 22.6) min, (31.2 +/- 10.3) min and (159.8 +/- 29.0) kJ in the 80-W group, as compared with (45.1 +/- 20.4) min, (24.6 +/- 8.3) min and (134.2 +/- 23.3) kJ in the 120 W group, with significant differences between the two (P < 0.01).</p><p><b>CONCLUSION</b>GreenLight laser vaporization of the prostate is a safe and effective procedure for the treatment of BPH, and the new HPS 120-W laser therapy, with its advantages of easier operation and shorter surgical time, is an even better minimally invasive option for elderly high-risk patients.</p>

Expressions of transforming growth factor-beta1, desmin and CD34 in the penile corpus cavernosum of rats / 中华男科学杂志

<p><b>OBJECTIVE</b>To detect the expressions of transforming growth factor-beta1 (TGF-beta1), Desmin and CD34 in the penile corpus cavernosum of SD rats in different age groups.</p><p><b>METHODS</b>We randomly selected 10 SD rats in each of the 2-, 5- and 20-month age groups, harvested their penile corpus cavernosum tissues under ether anesthesia, and detected the mRNA and protein expressions of TGF-beta1, Desmin and CD34 by RT-PCR and immunohistochemistry.</p><p><b>RESULTS</b>The results of RT-PCR showed the mRNA expressions of TGF-beta1, Desmin and CD34 in the corpus cavernosum tissues, with significant differences between every two groups (P < 0.01). The TGF-beta1 protein was mainly expressed in the trabeculae and around the arteries of the corpus cavernosum for membrane and cytoplasm staining, the Desmin protein mainly in the membrane and cytoplasm for muscle tissue staining; and the CD34 protein mainly in the vascular and sinusoidal endothelia. The mRNA expression of TGF-beta1 was correlated positively (r = 0.944, P < 0.01) while those of Desmin and CD34 negatively with the age of the rats (r = -0.947, P < 0.01; r = -0.934, P < 0.01). And the mRNA expressions of both Desmin and CD34 had a significant correlation with that of TGF-beta1 (r = -0.888, P < 0.01; r = -0.887, P < 0.01).</p><p><b>CONCLUSION</b>With the increase of age, the expression of TGF-beta1 is significantly up-regulated, while those of Desmin and CD34 significantly down-regulated in the corpus cavernosum tissues, and it is negatively correlated with the latter two. TGF-beta1 is an important influencing factor on ED.</p>

Construction of the recombinant adenovirus vector bearing dual-survivin shRNA / 中华男科学杂志

<p><b>OBJECTIVE</b>To construct a recombinant adenovirus vector bearing dual-survivin short hairpin RNA (shRNA).</p><p><b>METHODS</b>Dual-survivin shRNA was designed and synthesized respectively, both inserted into adenovirus DNA. The recombinant adenovirus vector was confirmed via both sequencing and restriction digestion analysis, and then linearized and transfected into the HEK 293 cell line to generate recombinant adenoviruses.</p><p><b>RESULTS</b>The recombinant adenovirus vector was constructed and the target sequence was obtained.</p><p><b>CONCLUSION</b>The construction of the recombinant adenovirus vector provides a basis for the research of potential gene therapy for prostate cancer.</p>

Construction and identification of plasmid vector encoding two survivin shRNA / 中华男科学杂志

<p><b>OBJECTIVE</b>To construct and identify the eukaryotic expression plasmids encoding two short hairpin RNA (shRNA) of survivin for the purpose of paving the way for the studies of targeted gene therapy for prostatic carcinoma (PCa).</p><p><b>METHODS</b>Two shRNA of survivin were designed and synthesized respectively, and then both were cloned into plasmids. Finally, the recombinant plasmids were confirmed by sequencing and agarose gel electrophoresis after restriction digestion.</p><p><b>RESULTS</b>The recombinant plasmids encoding two survivin shRNA were constructed and the aim sequence obtained.</p><p><b>CONCLUSION</b>Successful construction of the recombinant provides a sound basis for the research of targeted gene therapy for PCa.</p>

Isolation and identification of arboviruses in Hebei Province / 中华实验和临床病毒学杂志

<p><b>BACKGROUND</b>To study the arboviruses carried by mosquitoes collected in Hebei Province.</p><p><b>METHODS</b>Samples were collected from mosquito active sites and stored in liquid nitrogen till use. Pools of 20 to 30 mosquitoes were ground after sterilization, centrifugal supernant was inoculated onto C6/36 cell, cytopathic effect was observed for three sequential passages. Positive isolates were identified by IFA and RT-PCR.</p><p><b>RESULTS</b>Totally 1310 mosquitoes were collected from two villages of She county, Hebei province. They were divided into 46 pools and ground respectively. Thirteen positive isolates were obtained. Two isolates reacted with alphaviral antibodies and were amplified by alphaviral primers, nucleotide sequence showed the highest homology (98%) to Getah virus (AY702913.1), so the two isolates were identified as Getah virus.</p><p><b>CONCLUSION</b>Getah virus was isolated from mosquitoes in Hebei Province. This is the first report of isolating Getah virus from inland of China.</p>

Investigation of Arboviruses in Lancang river down-stream area in Yunnan province / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To investigate the epidemic state of arboviruses in the downstream area of Lancang river in Yunnan province.</p><p><b>METHODS</b>Mosquitoes were collected from Lancang river downstream area (including Lancang county and Simao city) during summer in 1998 and stored in liquid nitrogen after classification. The mosquito pools were homogenized and centrifuged, then the supernatant was inoculated into C6/36 cells for virus isolation. New isolates were identified by neutralization test(NT), ELISA, immunofluorescence assay(IFA) and polyacrylamid gel electrophoresis(PAGE).</p><p><b>RESULTS</b>Totally 22 isolates of arbovirus were obtained from 233 mosquito pools by inoculation of C6/36 cells and positive rate of the isolation was 9.4%. Ten strains were resistant to both ether and 5 prime-IDU. So they were non-enveloped double-stranded (ds) RNA virus. Twelve segmented RNAs were shown by PAGE and PAGE profiles from the ten strains were 6-6 with minor variation. The isolates can be neutralized by immunized mouse ascites fluid of BJ95-75 strains of coltivirus by NT, and reacted with monoclonal antibody against BJ95-75 by ELISA. These viruses were identified as coltivirus. Nine isolates were sensitive to ether and resistant to 5 prime-IDU. So they were non-enveloped RNA viruses. PAGE showed 10 segmented RNA, and they were identified to be orbiviruses. Three isolations were sensitive to ether. One of them can be neutralized with JEV A2 strain antibody by NT and was positive to the homologous antibody by IFA. It was identified being strain of JE virus. One strain(YN92-4) can be reacted with anti-bunyavirus group specific immune ascites fluid by both IFA and ElISA, but reacted neither with anti-alpha virus group, nor with anti-flavivirus group JE virus ascites fluid. The virions are spherical and about 87 nm in diameter with surface projections by negative staining. Conclusion Twenty-two isolates have been obtained from wild caught-mosquitoes of Lancang river down-stream area in Yunnan province. Among them ten, nine, one and one were identified as coltivirus, orbivirus, JE virus and bunyavirus, respectively. One is under identification. This is the first report on bunyavirus isolated from mosquitoes in China.</p>

Genotyping of the Chinese isolates of coltivirus / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To classify the Chinese isolates of Coltiviruses.</p><p><b>METHODS</b>Three sets of primers were selected among them two were specific to the 9th and 12th segments of subgroup B2, and one was for the 12th segment of subgroup B1-All the Chinese isolates of Coltivirus selected in the experiment were classified according to the lengths of different amplicons of the reverse transcriptase-polymerase Chain reaction (RT-PCR). The homogenicity of the nucleic acids of the isolates BJ95-75 and YN-6 was also compared with other Coltivirus strains belonging to subgroup B2.</p><p><b>RESULTS</b>With the primers 12-854-S/12-B2-R, which were specific to the 12th segment of Coltivirus subgroup B2-850 bp amplicons were obtained from Beijing isolate BJ95-75 and all the Yunnan isolates such as YN-6, -67-1, -68-1, -69, -70-1, -70-2, -90, -92-2, -93 of Coltivirus 492 bp DNA fragments were also amplified from all of them with the segment 9th specific primers 9-JKT-S/9-JKT-R. However no positive results were obtained from Northeast isolates NE97-12, NE97-31 and control viruses YN-99(Orbivirus),YN-151-1(JEV) with the same two sets of primers. With 12-B1-S/12-B1R primers specific to the 12th segment of subgroup B1, no amplicons of right length were obtained from any of the Chinese isolates of Coltivirus and the control viruses. When compared the nucleic acid sequences of BJ95-75 and YN-6 with other Coltivirus strains such as Bannavirus, JKT6423, JKT6969, JKT7043, the amplicons from segment 12th of these two strains had more than 89.4% homology with the other strains, especially to the earlier Chinese isolate Bannavirus, the homolog was more then 98.9%. Nearly 96.5% and 99.2% of the nucleic acids of the amplicons from segment 9th of the two strains were being homologous to Bannavirus and about 84.0% to JKT6423, which had been classified into type B2a. But the maximal homogenicity was about 53% when compared with the other two coltivirus strains. JKT6969 and JKT7043 which had been classified into type B2b.</p><p><b>CONCLUSION</b>Genotyping the recent Chinese isolates of coltivirus for the first time in our country. Most of the Chinese isolates belong to subgroup B2, more exactly type B2a. The Northeast isolates NE97-12 and NE97-31 were not correctly grouped with the available primers.</p>

Photoselective vaporization treatment on benign prostatic hyperplasia in the elderly over 70 years old / 中华老年医学杂志

Objective To investigate the efficacy and safety of photoselective vaporization treatment on benign prostatic hyperplasia(BPH)in the elderly over 70 years old.Methods From August 2004 to December 2005,a total of 126 patients with lower urinary tract symptoms secondary to BPH underwent photoselective vaporization of the prostate(PVP)with an 80 W quasicontinuous KTP laser.The patients aged between 70 and 96 years,(median 78.0),with 46 cases above 80 years. Prostatic volume was 24～86 ml,in an average of 47.0 ml,with 46 cases above 60 ml.Results The mean operative time was 46.8 min(range from 30 to 100 min).After operation,the catheter was pulled out in 69 cases within 24 hours and the patients generally urinated well.At three-months follow-up,the mean I-PSS decreased significantly from(25.0?3.7)to(16.3?2.0)(P＜0.01), while the Qmax increased from(5.8?2.7)ml/s to(16.3?4.8)ml/s(P＜0.01).Complications consisted of 4 cases of hematuria,6 urinary infection and 1 acute epididymitis.Conclusions The study indicates that PVP,a minimal invasive surgical procedure,is a safe and effective procedure for the treatment of BPH in the elderly.