?AlM:To investigate the sensitive parameters of the anterior chamber changes with Pentacam anterior segment analysis system before and after laser peripheral iridectomy (LPl) in primary angle-closure suspetive (PACS).
? METHODS: Sixty eyes of 33 PACS patients were enrolled in this study. Pentacam examination was performed before and 1d after LPl to measure the central anterior chamber depth ( CACD ) , the peripheral anterior chamber depth ( PACD ) , the anterior chamber volume ( ACV) and the peripheral anterior chamber angle ( ACA) . Statistical analysis used paired t test.
?RESULTS: There was no statistical significance on the changes of ACD. PACD and ACV increased significantly between before and 1d after LPl. ACA was widened from (22. 26o±5. 18o) to (26. 42o±5. 20o), which were increased significantly between before and 1d after LPl.
?CONCLUSlON: LPl can deepen the PACD and increase the ACV in PACS. PACD and ACV are the sensitive parameters of the anterior chamber changes with Pentacam anterior segment analysis system.

Background Posterior capsular opacification (PCO)affects the pseudoaccommodation of 1CU accommodative intraocular lens (1CU AIOL).At present,few studies on the effect of PCO and Nd∶ YAG laser capsulotomy on intraocular shifting of 1CU AIOL are published.Objective The present study was to evaluate the effect of PCO and Nd∶YAG laser capsulotomy on the shifting of 1CU AIOL.Methods A respective serial caseobservational study was designed.Written informed consent was obtained from each patient prior to this study.Twentyfour eyes of 20 patients with PCO after phacoemulsification and implantation of 1CU AIOL were included in this study.Ocular examination was performed 3 months after IOL implantation,1 day before Nd:YAG laser capsulotomy and 3 months after Nd∶YAG laser capsulotomy to evaluate the distance corrected near visual acuity(DCNVA).The difference in the anterior chamber depths before and after administering 1％ pilocarpine topical eye drops was measured with the IOLMaster to determine the intraocular shifts of the IOL.The extent of IOL shifting was compared among 3 time points to assess the factors influencing IOL accommodation after 1CU AIOL implantation.Results The shifting amplitude of 1CU AIOL was(0.44±0.21)mm 3 months after implantation of 1CU AIOL,(0.27±0.11)mm 1 day before Nd ∶ YAG laser capsulotomy,and (0.34±0.10) mm 3 months after Nd ∶ YAG laser capsulotomy,showing a significant difference among them(F=7.180,P=0.001).The shifting amplitude of 1CU AIOL significantly declined 1 day before Nd∶YAG laser capsulotomy in comparison with 3 months after implantation of 1 CU AIOL(P =0.006).The shifting amplitude 3 months after Nd∶YAG laser capsulotomy increased slightly in comparison with 1 day before Nd∶YAG laser capsulotomy(P=0.059).DCNVA was(3.1±0.9)J 3 months after implantation of 1CU AIOL,(6.2±0.8) J 1 day before Nd ∶ YAG laser capsulotomy and(3.4±0.7) J 3 months after Nd ∶ YAG laser capsulotomy,with a significant difference among them (F =110.270,P =0.000).DCNVA was lower 1 day before Nd∶ YAG laser capsulotomy than 3 months after implantation of 1CU AIOL(P＜0.05).However,DCNVA was higher 3 months after Nd∶YAG laser capsulotomy than that of 1 day before Nd∶YAG laser capsulotomy (P＜0.05).There was no significant correlations between DCNVA and IOL movement 3 months after IOL implantation,1 day before Nd∶ YAG laser capsulotomy and 3 months after Nd ∶ YAG laser capsulotomy (r1 =-0.150,P1 =0.486,r2 =-0.320,P2 =0.122,r3 =-0.100,P3 =0.633).Conclusions The shifting amplitude of 1CU AIOL markedly declines due to PCO.No clinically significant influence of Nd ∶ YAG laser capsulotomy on the shifting amplitude of 1 CU AIOL is found.DCNVA can improve after Nd∶YAG laser capsulotomy.Multiple inter-related factors concerning pseudophakic accommodation may influence DCNVA.

Technology readiness level (TRL) refers the general maturity level of a single technology or technical systems (including technology,component or subsystem) during the process of development.Base on the original TRL proposed by NASA,with reference to medical device TRL modified by US Department of Defense and NATO,this study modified TRL definition and description for advanced medical devices with consideration of R&D,review and approval characteristics of advanced medical devices in China.

Objective To investigate the use of free transplantation of peroneal artery perforator-based propeller to the repair of the front feet skin defect.Methods Thirteen cases with front foot skin defect patients repaired through transplation of propeller flap of the peroneal artery from January 2009 to September 2012.The wound range was 5 cm ×4 cm-11 cm × 14 cm.The propeller flap of the peroneal artery designed according to the position of the propeller of the peroneal artery in a leg.The wound of the leg were repaired through suture directly or transplantation of skin.Results All 13 cases of free propeller flap were survived,the wound healing goodly.One case with the postoperatie blood vessels were removed by the surgical exploration.The time of follow-up between 3 and 17 months(mean 9.4 months).The quality of free flap was good.The function of walk of the foot repaired were not significantly affect.The patients were satisfactory to the results.The wound of the leg healed well ; The leg had no obvious muscle cicatricial adhesion.According to the foot disease treatment effect evaluation standard (JOA) evaluation,the result for 77-100 points,an average of 85.5 points.Conclusion Using propeller flap of the peroneal artery to repair the skin defect of front feet with a little injury,the skin texture more close to the repaired area,it is a reasonable approach.

ObjectiveTo demonstrate the project scope of the afferent nerves of the lumbar intervertebral disc,on which basis to explore the mechanism of the symptoms of discgenic low back pain.MethodsThirty Wistar rats were divided randomly into three groups of 10 rats each:the L4-5,L5-6,and L6 S1 group.Each group was further divided randomly into two subgroups,the experimental group and the control group,5 rats for each group.Intervertebral disc was exposed through the posterior approach under peritoneal cavity anesthesia,after the nerve roots were pull away,2 μl of 30％ cholera toxin-horseradish peroxidase (CT-HRP) was injected into the inner layer of the intervertebral disc in the experimental group,while 2 μl of 0.9％ Nacl was used in the control group.Forty-eight hours after the surgery,all rats were perfused and bilateral dorsal root ganglions(DRGs) of T10-L3 were resected and fixxied.Each DRG was sectioned at 30 μm thickness and processed by DAB method.The sections of DRGs were coverslipped and observed by optical microscopy for the neurons or axons labelled by CT-HRP.It was judged as positive that brownish-black particles were in the neurons or axons.ResultsNot in a single dorsal root ganglions,but in a scope of dorsal root ganglions axons labled by CT-HRP could be seen in the rats in the experimental groups.No CT-HRP labled neurons or axons were seen in dorsal root ganglions in the contral groups.ConclusionAfferent nerves of the lumbar intervertebral disc project to a scope of dorsal root ganglions,which is the anatomic basis of the mechanism of the symptoms of discgenic low back pain.

Objective To explore the role of proton MR spectroscopic imaging(1H-MRSI)and diffusion tensor imaging(DTI)in the diagnosis of adrenoleukodystrophy and to demonstrate the involvement of fibers by using the technique of DTT.Methods 1H-MRSI,DTI and routine imaging examinations were performed in 6 patients with ALD.The values of NAA,Cho,Cr,ADC,and FA were evaluated in different regions of lesion.The involved fibers were demonstrated by using the technique of DTT.Results The ratios of NAA/Cr(0.55±0.19)and NAA/Cho(0.22±0.11)were lower(F=7.693,7.751),and Cho/Cr(2.54±0.37)was higher(F=6.348)in the initial lesions,where higher ADC values(1.49±0.36,F=5.226)and the lowest FA values(0.21±0.08,F=5.139)were also observed(P＜0.05).The decreases of NAA/Cr(1.16±0.03)and NAA/Cho(0.45±0.17)in adjacent regions were more distinct than those of remote regions(t=1.769,1.842,P＜0.05).In the developing regions,the ADC values(0.89±0.03)were lower and the FA values(0.45±0.07)were the highest.There was negative correlation between NAA/Cho and ADC values(r=-0.71,P＜0.05),and there was positive correlation between NAA/Cho and FA values(r=0.31,P＜0.05).Discontinuations and fragments of fibres were observed in corpus callosum and pyramidal tract.Conclusions Combination of 1H-MRSI and DTI can offer a sensitive method for the early diagnosis and monitor the progress of white matter.DTT can be used to directly observe the involvement of fibers.

No abstract available.
Dinoprost* ; Female ; Laparoscopes* ; Pregnancy ; Pregnancy, Tubal*

To investigate the effect of additional factor XIII on the rate of cross-linked fibrin formation in fibrin glue, we prepared concentrated fibrinogen as a source of fibrin glue using thaw -syphon method from fresh frozen plasma, purified human factor XIII from plasma, and performed biochemical analysis of the fibrin glue formed with or without additional factor XIII. It was concluded that additional factor XIII promoted rapid formation of cross-linked fibrin (gamma-gamma dimer and a-polymer) which would be essential to clinically effective fibrin glue.
Factor XIII* ; Fibrin Tissue Adhesive* ; Fibrin* ; Fibrinogen ; Humans ; Plasma

Through the analysis of the current status and problems of innovative medical devices evaluation, tnis paper discussed the strategies of evaluation, and ultimately raises the frame of evaluation, so as to provide reference for scientific evaluation of medical devices in China.
China ; Equipment and Supplies ; standards ; Evaluation Studies as Topic

Objective To explore the feasibility of repairing the large area skin and soft tissue defect in thefront upper of tibia by free flap with anastomosis of saphenous vessels.Methods From June,2009 to April,2014,16 cases (10 males and 6 females) of large area skin and soft tissue defect in the front upper of tibia were treatedwith free flap.The ages ranged from 24 to 56 years old,averaged of 34.5 years old.The supportive therapy and repeated debridement combined with VSD,and designed to use free anterolateral thigh flap with anastomosis of saphenous vessels before repairing operation.Results Fourteen patients accorded with preoperative design,in which 2 cases were adopted cross leg flap anastomosis posterior tibia vessels of the healthy side (1 case of saphenous artery diameter too small,and 1 case of saphenous artery long injury degeneration,unsuitable for vascular anastomosis).All 14 flaps survived,expect 2 cases were part-necrosis in the end of the flap,and gradually healed by dressing exchange.Conclusion Reconstruction of large area skin and soft tissue defect in the front upper of tibia with free flap can use anastomosis of saphenous vessels.