Objective To discuss the safety and efficacy of retroperitoneal laparoscopic partial nephrectomy in the treatment of unilateral multifocal renal tumors.Methods The data of 12 patients with unilateral multifocal renal tumors managed with retroperitoneal laparoscopic partial nephrectomy between 2009 and 2012 were reviewed retrospectively.The 12 patients had a mean age of 42 years (28 to 62) and body mass index of 23.5 kg/m2 (18.6 to 29.3),including 4 males and 8 females.Four cases were in the left side,7 cases were in the right side,and 1 case had bilateral renal tumors.The diameter of renal tumors ranged from 0.5 cm to 4.7 cm,and all tumors were projected on the surface of kidney.Nine cases were diagnosed as renal cell carcinoma,and 3 cases were diagnosed as angiomyolipoma before operation.All patients underwent retroperitoneal laparoscopic partial nephrectomy under general anesthesia,while 1 patient with bilateral renal tumors experienced radical nephrectomy of the contralateral renal tumor 3 months after the first operation.Results All the oprations were successful without conversion to open surgery.The mean renal artery cut off time,operative time,estimated blood loss and hospital stay were 36 min (26-60),126 min (75-184),142 ml (50-300) and 5 d (3-9),respectively.No complication occurred and 1-week postoperative serum creatinine was (78.1 ±8.1)μmol/L.Histopathological study revealed 9 cases of renal cell carcinomaand 3 cases of angiomyolipoma.During the follow-up for 33 months (13-51),1 patient with yon Hippel-Lindau syndrome was operated with ipsilateral radical nephrectomy for a local recurrence while the remains had no local recurrence or metastasis.Conclusions For localized and exogenous unilateral multifocal renal tumors,retroperitoneal laparoscopic partial nephrectomy is feasible and safe.Those who have hereditary and/or malignant renal tumors should be monitored closely.

Objective To compare the safety and efficiency of retroperitoneal laparoscopic and transperitoneal laparoscopic radical nephrectomy by meta-analysis.Methods A systematic review of the literature about laparoscopic radical nephrectomy was performed,searching Medline,Embase,Cochrane library,CBM,CNKI,VIP and Wan Fang database from January 2000 to October 2012.The key words were transperitoneal,retroperitoneal,laparoscopy,radical nephrectomy.Two researchers evaluated the quality of included studies.A meta-analysis was conducted using Review Manager 5.0 software.Results Nine controlled clinical studies were concluded,including 1 306 patients (520 in retroperitoneal group and 786 in transperitoneal group).The extracted data were comparable.Meta-analysis results showed that significant difference existed in operative time and complication rate (OR =16.23,95％ CI 1.62,30.84; OR =2.44,95％CI 1.35,4.41) (P＜0.05).It seemed that the retroperitioneal laparoscopic radical nephrectomy was prior to the transperitoneal laparoscopic radical nephrectomy in those items.There was no significant difference between transperitoneal and retroperitioneal laparoscopic radical nephrectomy in incision length,estimated blood loss,stay-in hospital,conversion rate,5-year disease-free survival and 5-year overall survival (P＞ 0.05).Conclusions Retroperitoneal laparoscopic radical nephrectomy demonstrated significant lower operative time and complication rate than those in transperitoneal laparoscopic radical nephrectomy.However,there is no significant difference in efficacy.Each center can choose a modality according to their convention.

OBJECTIVE To explored the potential of pharmacological stabilization and reactivation of p53 for targeted cancer therapies. METHODS The cytotoxicity of a potent Cyclophilin A (CypA) inhibitor HL001 was tasted against a panel of cancer cell lines. The genotypes and activation of p53 were compared with the cytotoxicity profile of HL001. Two-dimensional (2D) PAGE analysis was performed to investigate differentially expressed proteins that involves in the anti-proliferation effects of HL001. Pull-down and Co-IP were used to confirmed the new identified PPI between CypA and G3BP1 and orthotopic animal model of lung cancer was used to tested the anti- tumor activity of HL001 in vivo. RESULTS We identify a novel CypA small molecule inhibitor HL001 that induces non-small cell lung cancer (NSCLC) cell cycle arrest and apoptosis via restoring p53 expression. We find that HL001 stabilizes p53 through inhibiting the MDM2-mediated p53 ubiquitination. Further mechanistic studies reveal that the downregulation of G3BP1 and the induction of reactive oxygen species and DNA damage by HL001 contribute to p53 stabilization. Surprisingly, HL001 selectively suppresses tumor growth in p53 wildtype NSCLC harboring Arg72 homozygous alleles (p53- 72R) through disrupting interaction between MDM2 and p53-72R in a CypA dependent manner. Moreover, combining HL001 with cisplatin synergistically enhance tumor regression in orthotopic NSCLC mouse model. CONCLUSION Pharma?cologic inhibition of CypA offers a potential therapeutic strategy via specific activation of p53-72R in NSCLC.

The bioactivities, chemical composition and distribution of aerial parts of Panax species are different from the roots. The present paper summarized the phytochemical and analytical studies of aerial parts of Panax species, including P. ginseng, P. notoginseng, P. quinquefoliun and P. japonicus. This review aims so as to provide scientific evidences for further investigation of chemical profile, quality control and optimal utilization of these resources.
Chemistry Techniques, Analytical ; Drugs, Chinese Herbal ; chemistry ; Panax ; chemistry ; Plant Components, Aerial ; chemistry ; Quality Control ; Saponins ; analysis ; chemistry

For medical image volume rendering, it is very difficult to simultaneously visualize interior and exterior structures while preserving clear shape cues. Highly transparent transfer functions produce cluttered images with many overlapping structures, while clipping techniques completely remove possibly important contextual information. To address this issue, A gradient adaptive shading based illumination model is proposed and implemented in CUDA architecture. The coefficients of ambient, diffuse and specular lighting are tuned adaptively according to gradient. The experiments show that our method is capable of preserving 3-D contextual information in medical image dataset while still show clear boundaries with real-time interactive speed.
Algorithms ; Artifacts ; Computer Graphics ; Computer Simulation ; Humans ; Image Enhancement ; methods ; Image Interpretation, Computer-Assisted ; methods ; Imaging, Three-Dimensional ; Models, Theoretical ; Pattern Recognition, Automated ; methods

Objective To investigate the effects of functional magnetic resonance imaging (fMRI)with acute ischemic stroke (AIS) patients,and to evaluate the relationship between brain reorganization and motor recovery.Methods Nine AIS patients and 9 healthy volunteers were assessed by fMR1 during passive finger clenching at a pace of 1 Hz.The fMRI results were analyzed using SPM2 software.Lateral indices (LIs) and activated regions were calculated,and the relationship between LI and muscle strength was examined.Results In the control group,activation was observed in the contralateral sensorimotor cortex (SMC) and the bilateral supplementary area (SMA) during the passive movement.In the AIS group,similar results were recorded dur- ing unaffected hand movement,but the ipsilateral activation areas were greater than those on the eontralateral side during movement of the affected hand.LI results confirmed that movement of the affected hand mainly elici- ted activation in the ipsilateral hemisphere.Conclusion The different fMRI manifestations of patients and nor- mal subjects reflect brain compensation,and fMRI is valuable for studying the correlation between motor function and brain reorganization.

The influences of E23K polymorphism of inwardly rectifying K~+channel 6.2 (Kir6.2) gene on the clinical phenotype of type 2 diabetes and glucose-lowering effect of gliclazide were investigated.The result showed that E23K polymorphism did not influence glucose-lowering effect of gliclazide,but serum creatinine level of patients with K/K genotype was higher than those of E/E and E/K genotypes (P

OBJECTIVETo evaluate the effect of testis homotransplantation in the treatment of androgen deficiency and infertility.

METHODSWe retrospectively analyzed 12 cases of testis homotransplantation.

RESULTSSurgical success was achieved in 11 cases, all with a significantly increased level of serum testosterone, and markedly improved secondary sex characteristics and sexual function.

CONCLUSIONTestis homotransplantation is highly effective for the treatment of androgen deficiency in males, but has little effect on spermatogenesis.

Adolescent ; Adult ; Humans ; Living Donors ; Male ; Retrospective Studies ; Testis ; transplantation ; Testosterone ; blood ; deficiency ; Transplantation, Homologous ; Treatment Outcome

OBJECTIVETo investigate the expression and gene mutation of cluster of differentiation 9 (CD9) in the pathway of the mineral powder induced malignant transformation in immortalized human bronchial epithelial cells (BEAS-2B) in Gejiu.

METHODSBEAS-2B cells served as the control group and its malignant transformation cells induced by mineral powder in Gejiu were considered as experiment group. The expression of CD9 protein in 20 bottles of BEAS-2B cells and 20 bottles of malignant transformation cells was evaluated by immunocytochemistry. The mRNA expression of CD9 in 10 bottles of BEAS-2B cells and 10 bottles of malignant transformation cells was examined by reverse transcriptase polymerase chain reaction (RT-PCR). Gene mutation was detected in the products of RT-PCR by DNA sequencing.

RESULTSThere was significant difference between the expression of CD9 protein in BEAS-2B cells (100%, 20/20) and that in its malignant transformation cells (35%, 7/20 P < 0.01). The expression of CD9 mRNA in BEAS-2B cells 0.91 +/- 0.09 was significantly higher than that in its malignant transformation cells (0.34 +/- 0.14) (P < 0.01). Two point mutation of CD9 gene was detected in the malignant transformation cells of BEAS-2B by DNA sequencing. The change of G-->T in the base of 231 led to the change of Gln-->His in the amino acids of 40. The change of T-->A in the base of 119 led to the change of Val-->Asp in the amino acids of 3.

CONCLUSIONThe absence or down-regulation of CD9 expression and point mutation in the malignant transformation cells of BEAS-2B may play a considerable role in the pathway of the malignant transformation in the BEAS-2B cells induced by mineral powder in Gejiu.

Bronchi ; pathology ; Cell Line ; Cell Transformation, Neoplastic ; drug effects ; genetics ; Dust ; Epithelial Cells ; drug effects ; metabolism ; pathology ; Gene Expression Regulation ; drug effects ; Humans ; Lung Neoplasms ; chemically induced ; genetics ; metabolism ; pathology ; Mining ; Mutation ; drug effects ; Tetraspanin-29 ; genetics ; metabolism

OBJECTIVESTo study the effect of cryopreservative period on the cryosurvival of human spermatozoa and find out the optimal recovery time of cryopreservation.

METHODSEighty-eight semen samples were collected from normal donors and divided randomly into 5 groups according to the period of cryopreservative storage (1 d, 7 d, 30 d, 180 d, 300 d) in liquid nitrogen after being frozen by the programized, three-step freezing method. Fresh and frozen-thawed semen were examined by the routine analysis of semen and then the sperm recovery rate were calculated.

RESULTSThere were no significant differences in sperm recovery rate between group I and the others (P > 0.05). The period of cryopreservative storage in liquid nitrogen had no correlation with the cryosurvival of human spermatozoa (r = 0.05, P > 0.05).

CONCLUSIONSIt was indicated that freezing-thawing after 24 h would be helpful to the screening of semen donors in batches for donor insemination of human sperm bank.

Cryopreservation ; Humans ; Male ; Semen Preservation ; Sperm Banks ; Spermatozoa ; physiology ; Time Factors