Background Many researches confirmed that basic fibroblast growth factor (bFGF)plays an important role on the proliferation and differentiation of retinal progenitor cells,but its low intraocular permeability limits its clinical application.To explore an effective approach to enhance the intraocular permeability of bFGF has an important significance for the treatment of retinopathy. Objective This study was to investigate the effect of azone on bFGF intraocular permeability after its topical administration. Methods Eighteen New Zealand white rabbits were randomly divided into four groups on random number table method.Distilled water( blank control group),5％ bFGF eyedrops(5％ bFGF group ),0.4％ azone+5％ bFGF eyedrops (0.4％ azone + 5％ bFGF group ) and 0.4％ azone+ 10％ bFGF eyedrops (0.4％ azone + 10％ bFGF group)were topically administered in different groups at 5- minute interval for 3 times.Aqueous and vitreous fluid were extracted 30 minutes after administration of eyedrops,and those in the 0.4％ azone + 5％ bFGF group were obtained 30,60 and 120 minutes after administration.bFGF concentration in the aqueous and vitreous fluid was quantified with ELISA. Results The bFGF levels(A value)in aqueous and vitreous fluid were 0.1007±0.0100 and 0.1340±0.0100 after topical administration of the 5％ bFGF eyedrops,those in blank control group were 0.1363 ±0.0100 and 0.1130±0.0100,respectively,and those in the 0.4％ azone+5％ bFGF group and 0.4％ azone+10％ bFGF group were significantly higher than the 5％ bFGF group ( both P=0.000).However,no significant difference was found in bFGF levels between 0.4％ azone+5％ bFGF group and 0.4％ azone + 10％ bFGF groups in both aqueous and vitreous fluid ( P =0.985,0.098 ).A value of bFGF in aqueous was gradually increased with prolong of time in the 0.4％ azone+5％ bFGF group,with the values 0.9413±0.0300 at 30 minutes,0.3865±0.0300 at 60 minutes,and 0.2550±0.0300 at 120 minutes,showing a positive linear correlation between bFGF level and time( R2 =0.736,P =0.003 ),but no significant correlation was seen in vitreous sample(R2=0.196,P=0.233). Conclusions Azone can improve the intraocular penetration of bFGF eyedrops.Increasing the concentration of bFGF in eyedrop from 5％ to 10％ dose not change its intraocular distribution.The highest content of the bFGF in aqueous is at 30 minutes following the administration of 0.4％ azone+5％ bFGF eyedrops.

It's difficult to diagnose precancerous lesion and early cancer for a long time, because both of them haven't typical morphological characteristics. As a novel diagnostic modality, fluorescence endoscopy can accurately reflect minimal changes in human's tissue, thus making a meaningful progress for cancer diagnosing. 200 patients were examined by fluorescence endoscopy to evaluate the diagnostic value. The overall accuracy, sensitivity and specificity for detecting malignant gastrointestinal tumor was 94.0%, 94.6% and 93.5%, respectively. Thus, fluorescence endoscopy can be used to diagnose malignant gastrointestinal tumors with high validity and reliability, and is advantageous over conventional white light endoscopy especially in detecting the atypical and suspicious lesions. Furthermore, fluorescence endoscopy can also guide target biopsy, is significant to improve the early cancer detection rate, has a broad development prospect.
Endoscopy ; instrumentation ; Fluorescence ; Gastrointestinal Neoplasms ; diagnosis ; Humans ; Sensitivity and Specificity

OBJECTIVETo search for an optimum method for testicular prothesis implantation in the treatment of testis loss.

METHODSWe retrospectively analyzed the surgical methods and outcomes of 53 cases of terminal prostate cancer and 4 cases of unilateral testicular torsion treated by implantation of testicular prothesis with the polypropylene mesh.

RESULTSThe 57 male patients all received testicular prothesis with the polypropylene mesh. All the patients were satisfied with the appearance and size of the scrotum after surgery. No scrotal hematoma, prosthesis infection, or autoimmune disease occurred postoperatively.

CONCLUSIONTestis loss is not a rare condition clinically, for the treatment of which surgical implantation of testicular prothesis with the polypropylene mesh can achieve both a fine tissue compatibility and a desirable scrotal appearance.

Humans ; Male ; Polypropylenes ; Prostatic Neoplasms ; surgery ; Prostheses and Implants ; Retrospective Studies ; Scrotum ; Spermatic Cord Torsion ; surgery ; Surgical Mesh ; Testis

AIMTo establish HPLC chiral separation method for ketoprofen enantiomers by using Chirobiotic V chiral seperation phase (CSP) (A) and vancomycin as chiral mobile phase additives (B).

METHODSThe separation was first performed on Chirobiotic V CSP with the mobile phase of terahydrofran (THF)-0.5% triethylanine acetate(TEAA) buffer (15:85) at the flow rate of 0.7 mL.min-1. When using vancomycin as chiral mobile phase additive, the separation was carried out on C8 column (150 mm x 4.6 mm), the mobile phase was methanol-0.25% TEAA buffer (50:50), the flow rate was 0.7 mL.min-1. The effects of the concentration of vancomycin, organic modifier and the pH of the buffer on the resolution of ketoprofen enantiomers were investigated. Also, the feasibility of these two methods to be used as quantitative method was studied.

RESULTSKetoprofen enantiomers were separated at a baseline level under the chromatographic condition of both methods A and B, the resolution was 2.28 and 2.22, respectively. In method A the linearity of enantiomer was obtained from 0.5 mg.L-1 to 100 mg.L-1, the detectionlimit was 1 microgram.L-1. When using vancomycin as mobile phase additive the system was shown to have a high efficiency. In this system, the assay of enantiomer is linear from 2.5 mg.L-1 to 250 mg.L-1. The detection limit was 14.5 micrograms.L-1.

CONCLUSIONBoth methods can be used to detect optical purity of S-(+)-ketoprofen.

Anti-Inflammatory Agents, Non-Steroidal ; isolation & purification ; Chromatography, High Pressure Liquid ; Hydrogen-Ion Concentration ; Ketoprofen ; isolation & purification ; Stereoisomerism ; Vancomycin ; chemistry

OBJECTIVETo evaluate the treatment effect of the two surgical methods for upper eyelid retraction with thyroid associated-ophthalmopathy.

METHODSTwenty-two patients (32 eyes) with inactive thyroid associated-ophthalmopathy were divided into 2 groups (11 for each group) randomly. 11 patients (18 eyes) in the group A were treated by central tenotomy of levator aponeurosis. Another 11 patients (14 eyes) in the group B were treated by lengthening of Mullers' muscle combined with levator muscle. The treatment effect was investigated in 6-month follow-up study.

RESULTSAll of the patients were improved with the two surgical methods, which there was very significant difference before and after the treatments (P < 0.01), but not between the two surgical methods (P > 0.05) by statistical analysis. There was recurrent retracting in 4 patients (6 eyes) of group A and in 1 patient (1 eye) of group B, which there was significant difference between the two groups (P < 0.05) by Chi-square test. None of the patients was overcorrected.

CONCLUSIONSThe two methods are both effective and safe in correcting upper eyelid retraction. The rate of recurrent retracting is lower in lengthening of Mullers' muscle combined with levator muscle than that in central tenotomy of levator aponeurosis.

Blepharoplasty ; methods ; Eyelid Diseases ; etiology ; surgery ; Female ; Graves Ophthalmopathy ; surgery ; Humans ; Male ; Oculomotor Muscles ; surgery

OBJECTIVETo investigate the technological parameters of the purification process of total flavones from Smilax china with macroporous absorption resin.

METHODThe technical process for purification of total flavones with the optimum macroporous absorption resin was screened by yield of total flavones product.

RESULTThe D140 macroporous absorption resin had the best separating efficiency when the flavones content in the liquid was 0.5 g x mL(-1) equivalent to raw material, the volume of drug 18 BV (resin bad volume) with the adsorption-power 2 BV x h(-1), and the volume of 60% (mL x mL(-1)) ethanol as eluant 5-10 BV (resin bad volume) with desorption-power 1 BV x h(-1). The obtained flavones product has total flavones recovery rate of 84.72%.

CONCLUSIONThe treatment of regenerated resin is easy, this method is advisable.

Absorption ; Flavones ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Resins, Synthetic ; chemistry ; Rhizome ; chemistry ; Smilax ; chemistry ; Technology, Pharmaceutical ; methods

Objective To discuss the outcomes of the clinically insignificant residual fragments after minimally invasive percutaneous nephrolithotomy. Methods 75 patients (11％) with CIRF among 655 who underwent initial MPCNL from January 2008 to December 2010 were diagnosed by CT scan.Clinical data of 68 patients (39 male and 29 female) were analyzed retrospectively.Previous open surgery hadbeen performed in 13 and ESWL in 20 cases.The median residual fragment size was 1.8 mm.The anatomical distribution of CIRF was 9 at upper pole,14 at middle,34 at lower,9 at renal ureteropelvic junction and 2 at upper and lower pole.Stone analysis showed 40 cases of calcium oxalate calculi,15 of calcium oxalate calculi mixed with carbonate calculi,2 calcium oxalate calculi mixed with uric acid,3 calcium oxalate calculi mixed with struuvite stone,3 struuvite stone,2 uric acid stone and 3 carbonate apatite mixed with struvite stone.Mean follow up was 23 months (12-36).Follow-up consisted of physical examination,serum routine,urine routine and CT imaging. Results 14(21％) patients (3 upper pole,1 middle pole,4 lower pole and 6 ureteropelvic junction) had symptomatic episodes,including 9 hematuria,2 renal colic pain,5 lower urinary tract symptoms,12 with size of CIRF ＞ 4 rmm.8 patients required surgical procedures.5 patients (1 middle,2 upper pole and 2 renal pelvis) underwent ESWL.3 patients with ureteral CIRF were performed ureteroscopic lithotripsy.The CIRF were clear after surgeries.4 paticnts with CIRF ＞ 4 mm did not have symptoms.These patients were recommended to conservational treatments.2 patients with ureteral CIRF had renal colic pains.The stones were excluded after spasmolytic analgesic treatments.27％ (3/11)CIRF located in upper pole had symptom,compared with 4％ (1/14) in middle pole,11％ (4/36) in lower pole and 67％ (6/9) in ureteropelvic junction. Conclusions CIRF can be located variously in the kidney and ureter.Most CIRF are calcium oxalate calculi and locate in the lower pole.Patients with the history of previous open surgery or SWL are more likely to get CIRF.Medium-term follow-up of CIRF revealed that CIRF located in the renal ureteropelvis junction are more likely to have clinical symptoms.

Objective To analyze the CT findings of melamine induced urinary calculi.Methods Nineteen children with a history of ingestion of melamine contaminated infant formula milk were studied, including 12 males and 7 females, age ranged from 50 days to 5 years.Results CT demonstrated renal pelvic and ureteral stones in 13 cases, with urinary obstruction in 9 of them.The size of the stones ranged from 0.3 cm × 0.3 cm to stag-horn calculus.The density of the stones measured from a low of 40-70 HU up to a high of 410 HU with an average density of 160 HU.Conclusion CT scan is an excellent modality in demonstrating urinary tract calculi caused by melamine. It is the method of choice when ultrasound examinations are equivocal.

Background Hypoxia is a crucial factor of neovascularization.Many researches found that stromal cell-derived factor-1 (SDF-1) and integrin-linked kinase (ILK) play an important role in the neovascular disease.However,effect of SDF-1 and ILK in eye neovascular disease is below understood.Objective The aim of this study was to investigate the effect of hypoxia on the expressions of SDF-1 and ILK in cultured retinal pigment epithelium(RPE) cells in vitro.Methods RPE tissue was isolated from 4-week-old C57BL/6 mouse and was digested and cultured in DMEM/F12 with 10％ fetal bovine serum (FBS).The cells with 80％ confluence were collected and passaged.The third generation of cells were identified with cytokeratin 18 (CK18) antibody by immunochemistry.The cells were inoculated at the density of 5×104 cells/ml to free-serum DMEM/F12 for 24 hours and then were cultured in regular medium in the normoxic control group.RPE cells were cultured for 1 hour and 3,6,12,24,48,72 hours with 200 μmol/L CoCl2 in the hypoxia group.Reverse transcription-PCR(RT-PCR) was used to evaluate the expressing change of SDF-1 mRNA and ILK mRNA in RPE cells,and Western blot was used to assay the expressing change of SDF-1 protein and ILK protein in RPE cells in different time points.The detected outcomes were represented as the ratio of target gene A value/β-actin A value.Results Cultured cells showed the polygon in shape with the black pigment granules in cytoplasm.Over 90％ cells were positive response for CK18.Expressions of the SDF-1 mRNA and ILK mRNA were increased in different time points after CoCl2 co-cultured(SDF-1 mRNA:F=281.875,P=0.000 ;ILK mRNA: F=187.566,P=0.000),with the highest expressing value in hypoxia at 12 hours.No significant change in the expression of SDF-1 mRNA and protein was found 1 hour after CoCl2 co-cultured,but expressions of SDF-1 mRNA and ILK mRNA were significantly higher in 3,6,12,24,48 and 72 hours than the normoxic control group(P＜0.01).The expressions of SDF-1 protein and ILK protein were gradually ascended with the time increase of CoCl2 co-culture,showing a significant difference among different time points(SDF-1: F=44.719,P =0.000 ; ILK: F =144.481,P =0.000),and the up-regulation of SDF-1 protein and ILK protein expression was seen mainly in 3,6,12,24,48 and 72 hours after CoCl2 co-cultured in comparison with the normoxic control group (P＜0.01).Conclusions SDF-1 and ILK are involved in the hypoxic response of RPE cells and may play a potential role in ischemic/hypoxic retinopathy.

Objective To evaluate the predictability of MSCT perfusion in the restorability of renal function of hydronephrotie kidneys with unilateral partial ureteric obstructed rabbit model as to explore a method to predict the restorability of renal function of hydronephrotic kidneys and to investigate the changes of MSCT perfusion parameters during the course of the restore of renal function.Methods Establish a unilateral partial ureteric obstructed rabbits hydronephrotie model.Hydronephrotie rabbits were grouped as control,2,4 and 8 week(G_2w,G_4w and G_8w)after obstruction and the later 3 groups of rabbits were reared for further 4 weeks after the obstruction was released.MSCT perfusion scanning was performed and the specimen was made into histological slices with HE staining.Results BF and BV value of renal cortex and medulla of G_2w after obstruction [(864?32)ml?100 g~(-1)?min~(-1),(19.5?0.9)ml/100 g (cortex ); (182.1?7.5)ml?100g~(-1)?min~(-1),(8.37?0.51)ml/100g(medulla)]was released restored in substance and approached that of control[(899?63)ml?100g~(-1)?min~(-1),(21.6 + 1.4)ml/100 g (cortex);(193.5?16.5 )ml?100g~(-1)?min~(-1),(8.50?0.54 )ml/100 g (medulla)]while there was no significant restore in that of G_4w and G_8w after obstruction[(525?15)ml?100g~(-1)?min~(-1),(12.8? 0.6)ml/100g (G_4 w);(512?10)ml?100g~(-1)?min~(-1),(9.4?1.0)ml/100 g (G_8w)] was released. Histologically,there was a positive correlation between the duration of obstruction and the seriousness of pathologic changes.Conclusion MSCT perfusion can provide information not only morphologically but also about renal perfusion of hydronephrotic kidneys.