Objective To investigate the clinical efficacy of modified YV-plasty for refractory bladder neck contracture (BNC) caused by transurethral resection of prostate (TURP).Methods From June 2013 to March 2016,11 patients with BNCs secondary to TURP were included in this study.Their mean age was 63.7 years (range,56-73 years).All patients presented voiding difficulty and failed after 2 or more prior endoscopic treatments.Modified YV-reconstruction of bladder neck was performed,by incising the anterior wall of bladder neck in a T-shaped manner,and creating two well-vascularized and tension-free flaps,which offer the possibility to reconstruct a wide bladder neck.Results After a mean follow-up of 14.6 months (ranging 3-24 months),successful outcome was achieved in 9 patients without incontinence secondary by surgery.Recurrent voiding difficulty developed in 2 patients,which was cured after a following endoscopic treatment.Conclusion A wider bladder neck can be obtained through modified YV-reconstruction of bladder neck,while avoiding external urethral sphincter injury.It is an available option for refractory bladder neck contracture.

Twenty-one compounds were isolated from the rhizomes of Iris germanica by various chromatographic techniques such as silica gel, ODS and Sephadex LH-20 chromatography. Their structures were established on basis of physical properties, MS and NMR spectroscopic data Their structures were identified as ombuin (1), 5, 3, 3'-trihydroxy-7, 4'-dimethoxyflavanone (2), naringenin (3), cirsiliol-4'-glucoside (4), 3beta, 4'-dihydroxy-7,3'-dimethoxyflavonone-5-O-beta-D-glucopyranoside (5), genistein (6), irilin D (7), muningin (8), 5, 7, 4'-trihydroxy-6, 3', 5'-trimethoxyisoflavone (9), tectorigenin (10), irigenin (11), tectoridin (12), iridin (13), mangiferin (14), irisxanthone (15), pyroglutamic acid (16), 2, 4', 6-trihydroxy-4-methoxybenzophenone-2-O-beta-D-glucoside (17), apocynin (18), androsin (19), beta-sitosterol (20), and daucosterol (21). Among them, compounds 1-9, 16, 17 were obtained from this plant for the first time, compounds 8 and 9 were separated from Iris species for the first time, compounds 1, 4, and 17 were obtained from the family for the first time.
Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Iris Plant ; chemistry ; Molecular Structure ; Rhizome ; chemistry ; Spectrometry, Mass, Electrospray Ionization

Objective:To evaluate the cytotoxicity of different dental bonding agents to human dental pulp cells. Methods:Four dental bonding agents(Prime & Bond NT,Single Bond,Xeno Ⅲ and iBond) were diluted with the culture medium by a ratio of 1∶1 000,1∶2 000 and 1∶4 000(v/v), and the fourth passage of dental pulp cells were then exposed to agent dilutions for 12, 24 and 48 h respectively, then the morphological changes of pulp cells were observed with microscopy and cytotoxicity was analyzed with modified 3-(4,5-dimethyl-thiazol-2-yl)-2,5-diphenyl-tetrazolium bromide (MTT) assay.Results:There was significant influence of the type of dental bonding agents,exposure time and concentration on the cell morphology. Total-etch system was more toxic than self-etch system.Conclusion:Dental bonding agents are toxic to pulp cells,Single Bond is the strongest cytotoxic agent among the 4 adhesive agents.

Objective To investigate the numbers of corpus luteum and ovarian follicles and compare the levels of serum prolactin (PRL), luteinizing hormone (LH), follicle-stimulating hormone (FSH) and estradiol (E2 ) in different phases of estrus cycle in female gerbils .Methods Consecutively taking vaginal smears of the gerbils and directly examined under light microscope to distinguish the four phases of the estrus cycle .Hematoxylin and eosin staining was used to histological examination of the gerbil ovaries , and to detect the levels of serum PRL , LH, FSH and E2 by ELISA assay during estrus cycle .Results The proportion of cornified vaginal exfolliated cells could be the basis to distinguish four phases respectively:proestrus, oestrus, metoestrus, and dioestrus.Moreover, there were no significant differences between the numbers of ovarian follicles in different phases of estrus cycle .The numbers of corpus luteum in preoestrus were significantly lower than that in the other phases of estrus cycle ( P <0.05 ) .The levels of serum PRL and LH were increasing constantly from preoestrus to dioestrus , and both reached a peak at dioestrus ( P<0.05 ) .The levels of serum FSH and E2 both peaked at preoestrus , and were significantly higher than those at oestrus , metoestrus and dioestrus ( P<0.05).Conclusions There are no significant differences between the numbers of ovarian follicles in different phases of estrus cycle .Gonadotropin , prolactin and estradiol paly important roles in the regulation of estrous cycle .The phases during which surges of FSH and E 2 occur in Mongolian gerbils are similar to those of rats and mice , while the PRL and LH are different .Our findings provide further reference to the study of reproductive physiology of Mongolian gerbils .

The oral and gastrointestinal opportunistic pathogen contamination was compared between tooth mugs placed upward and down-ward(n=9)for 1 4 days.Selective cultivation of the pathogens was uesd to measure the extent of contamination.The colony forming units (CFU)of colibacillus in group up and group down were 4.25 ±0.71 and 2.84 ±1 .40(P=0.046),S.mutans 89 ±0.31 and 2.84 ±1 .40 (P<0.001 ),Candida 2.28 ±1 .36 and 2.53 ±1 .92(P=0.002),fungus 2.44 ±0.99 and 0,respecitvely.Thus,tooth mug placed open-ing down is superior for health.

Objective To investigate the method to isolate and culture hepatic stellate cells ( HSCs) for studying the cellular mechanisms of hepatic frbrosis.Methods HSCs were isolated by nycodenz density gradient centrifugation after the hepatocytes obtained from adult male gebils were digested with pronase, collagenase and DNase, infused via portal vein.The cell viability was determined by trypan blue exclusion test.The purity of HSCs was identified by detectingα-SMA, desmin immunohistochemical staining.Results The yield rate of HSCs was 0.5~1 ×107 per gerbil liver, and the cell viability was more than 90%.The percentage ofα-SMA-positive cells was more than 75%after 3 days primary culture and almost 100% cells were α-SMA and desmin positive in passage culture.Conclusion The successful protocol of primary culture of Mongolian gerbil HSC provide a technical support for research of relevant liver diseases and drug development in the future.

Objective To evaluate the application value of combination of low kV,low mAs,and iterative model reconstruction (IMR) in carotid CT angiography.Methods Forty patients (BMI 20-25 kg/m2) were enrolled and randomly divided into routine dose group(20) and low dose group(20),The parameters in routine dose group were 120 kV,automatic mAs,and filter back projection(FBP);and that in low dose group were 80 kV,automatic mAs but upper limit 150 mAs,and FBP or IMR.All patients received the injection of 32 ml of iopamidol(370 mg I/100 ml) at a flow rate of 4 ml/s,followed by 50 ml normal saline at the same rate.The CT value and image noise(SD)of the aortic arch,left carotid artery bifurcation,and right carotid artery of rock bone were measured with region of interest(ROI) method,and then signal to noise ratios (SNR) and contrast to noise ratio (CNR)of image were calculated.The image quality was evaluated by two radiologists using a subjective four points scale on multiplanar reformated (MPR),maximum density projected (MIP) and volume rendered (VR) images.Volume CT dose index (CTDIvol),dose length product (DLP),and the effective dose (E) of each patient were recorded.Results CT values of carotid artery[(479.87 ± 70.28),(514.78 ± 82.69),(436.50 ± 89.87) HU] in low dose group were significantly higher than those in routine dose group [(295.63 ± 34.75),(325.09 ± 37.81),(286.93±36.46)HU](t =-6.47,-5.76,-3.66,P＜0.05).The SNR and CNR of IMR reconstructed image in low dose group were significantly higher than those of FBP reconstructed image in routine dose group (t =-7.54,-3.55,-5.31,-7.13,-5.28,-8.35,P＜0.05).The image quality of FBP reconstructed images in routine dose group and IMR reconstructed images in low dose group were all enough for diagnosis.The image quality of FBP reconstructed images in low dose group was significantly poorer than that in routine dose group and IMR reconstructed images in low dose group (Z =-2.87,-3.69,P ＜0.05).The effective dose in low dose group (0.57 ±0.13) mSv was 73％ less than that in routine dose group (2.22 ± 0.36) mSv.Conclusions Using low kV,low mAs,and IMR would help to obtain good carotid CT angiographic images and low radiation dose.

Diabetic retinopathy (DR) is one of the most common microangiopathies of diabetes mellitus (DM). It is due to abnormal blood glucose metabolism caused by insufficient insulin secretion or decreased activity. Its pathogenesis is complex, related to multi-gene inheritance and environmental factors. At present, the etiologic study of DR has been gradually deepened at home and abroad, but the epidemiological study of minority DR is lacking. This paper reviews DR's characteristics, ethnic differences and its characteristics in ethnic minority.

Objective:To summarize the clinical outcomes of en-bloc kidney transplantation from small infant donors to adult recipients at a single center.Methods:A total of 22 en-bloc transplantations from pediatric donors to adult recipients were performed from July 2013 to October 2017 in Institute of Organ Transplantation Affiliated Tongji Hospital Tongji Medical College Huazhong University of Science. Clinical data were retrospectively analyzed. The average age of 22 donors was (2.9±1.7) months with an average weight of (4.9±1.4) kg and 15 of them were aged under 3 months. The average weight of 22 adult recipients was (46.3±5.6) kg and most recipients were female. The causes of early graft failure and recipient death were examined during follow-ups. The recipients with functioning grafts post-transplantation were divided into single kidney survival group and en-bloc kidney survival group based upon the occurrence of unilateral vascular thrombosis. Medium/long-term renal graft function was compared between two groups.Results:Early graft failure occurred in 4 recipients. The causes were bilateral renal vascular thrombosis ( n=2), renal rupture ( n=1) and multiple organ failure followed by death ( n=1). Eighteen recipients were discharged after a recovery of renal graft function. One case had a removal of bilateral renal grafts due to new-onset graft tumor and another two died from interstitial pneumonia and complicate systematic disorder respectively during follow-ups. Among the remaining 15 recipients, 10 achieved bilateral renal survival (median follow-up: 59 months) and 5 unilateral renal survival (median follow-up: 48 months). The average eGFR of bilateral renal survival group was significantly higher than that of unilateral renal survival group at Year 1 post-transplantation (95±27 vs 61±24 ml/min/1.73 m 2, P<0.05) while the gap narrowed at Year 3 and there was no statistical significance (95±21 vs 69±31 ml/min/1.73 m 2, P=0.12). Conclusions:Although en-bloc kidney transplantation from infant donors can expand organ donor pool, there is a higher risk of early graft failure and unilateral renal vascular thrombosis. Nevertheless, satisfactory renal transplant outcomes may be achieved in patients with unilateral renal graft survival.

Objective:The prokaryotic expression vector of human anti-Siglec-9 Fab fragment antibody was constructed and purified,while was identified. Methods:The variable and conserved regions of heavy chain and light chain were obtained by polymerase chain reaction respectively(PCR),which was combined by overlap extension PCR and was digested with restriction enzyme,and then it was transformed into Escherichia coli BL21 and was purified by His-trap Lambda Fab column and AKTA system. SDS-PAGE,ELISA and Western blot were used for the identification of human anti-Siglec-9 Fab fragment antibody. The effect of human anti-Siglec-9 Fab fragment antibody on regulating the mRNA expression of TNF-α,IL-1,IL-6,IL-8 was detected by real-time PCR. Results:Successfully obtained the chains of heavy and light, while constructed an activation human anti-Siglec-9 Fab fragment antibody which could specifically bind to Siglec-9 protein. The human anti-Siglec-9 Fab fragment antibody could specifically bind to Siglec-9 was confirmed by SDS-PAGE,ELISA and Western blot. The human anti-Siglec-9 Fab fragment antibody inhibited the mRNA expression of TNF-α,IL-1, IL-6,IL-8. Conclusion:Successful prokaryotic expression,purification,character analysis,and suppressed the mRNA expression of in-flammatory cytokines with the human anti-Siglec-9 Fab fragment antibody and lay the biology foundation for the further study.